diff --git a/Telegram/CMakeLists.txt b/Telegram/CMakeLists.txt
index e4df45f5d..085c42eb6 100644
--- a/Telegram/CMakeLists.txt
+++ b/Telegram/CMakeLists.txt
@@ -73,6 +73,7 @@ PRIVATE
 if (LINUX)
     target_link_libraries(Telegram
     PRIVATE
+        desktop-app::external_glibmm
         desktop-app::external_glib
     )
 
diff --git a/Telegram/SourceFiles/data/data_document.cpp b/Telegram/SourceFiles/data/data_document.cpp
index 946a452a1..472faf74d 100644
--- a/Telegram/SourceFiles/data/data_document.cpp
+++ b/Telegram/SourceFiles/data/data_document.cpp
@@ -31,7 +31,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "platform/platform_specific.h"
 #include "platform/platform_file_utilities.h"
 #include "base/platform/base_platform_info.h"
-#include "base/platform/base_platform_file_utilities.h"
 #include "history/history.h"
 #include "history/history_item.h"
 #include "history/view/media/history_view_gif.h"
@@ -49,6 +48,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "app.h"
 
 #include <QtCore/QBuffer>
+#include <QtCore/QMimeType>
+#include <QtCore/QMimeDatabase>
 
 namespace {
 
@@ -1724,7 +1725,10 @@ bool IsIpRevealingName(const QString &filepath) {
 	return ranges::binary_search(
 		kExtensions,
 		FileExtension(filepath).toLower()
-	) || base::Platform::IsNonExtensionMimeFrom(filepath, kMimeTypes);
+	) || ranges::binary_search(
+		kMimeTypes,
+		QMimeDatabase().mimeTypeForFile(QFileInfo(filepath)).name()
+	);
 }
 
 base::binary_guard ReadImageAsync(
diff --git a/Telegram/SourceFiles/platform/linux/file_utilities_linux.cpp b/Telegram/SourceFiles/platform/linux/file_utilities_linux.cpp
index 11d264843..2e34a1e19 100644
--- a/Telegram/SourceFiles/platform/linux/file_utilities_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/file_utilities_linux.cpp
@@ -16,11 +16,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include <QtGui/QDesktopServices>
 
-extern "C" {
-#undef signals
-#include <gio/gio.h>
-#define signals public
-} // extern "C"
+#include <glibmm.h>
+#include <giomm.h>
 
 using Platform::internal::GtkIntegration;
 
@@ -28,12 +25,15 @@ namespace Platform {
 namespace File {
 
 void UnsafeOpenUrl(const QString &url) {
-	if (!g_app_info_launch_default_for_uri(
-		url.toUtf8().constData(),
-		nullptr,
-		nullptr)) {
-		QDesktopServices::openUrl(url);
+	try {
+		if (Gio::AppInfo::launch_default_for_uri(url.toStdString())) {
+			return;
+		}
+	} catch (const Glib::Error &e) {
+		LOG(("App Error: %1").arg(QString::fromStdString(e.what())));
 	}
+
+	QDesktopServices::openUrl(url);
 }
 
 void UnsafeOpenEmailLink(const QString &email) {
@@ -46,27 +46,27 @@ bool UnsafeShowOpenWith(const QString &filepath) {
 	}
 
 	if (const auto integration = GtkIntegration::Instance()) {
-		const auto absolutePath = QFileInfo(filepath).absoluteFilePath();
-		return integration->showOpenWithDialog(absolutePath);
+		return integration->showOpenWithDialog(filepath);
 	}
 
 	return false;
 }
 
 void UnsafeLaunch(const QString &filepath) {
-	const auto absolutePath = QFileInfo(filepath).absoluteFilePath();
-
-	if (!g_app_info_launch_default_for_uri(
-		g_filename_to_uri(
-			absolutePath.toUtf8().constData(),
-			nullptr,
-			nullptr),
-		nullptr,
-		nullptr)) {
-		if (!UnsafeShowOpenWith(filepath)) {
-			QDesktopServices::openUrl(QUrl::fromLocalFile(filepath));
+	try {
+		if (Gio::AppInfo::launch_default_for_uri(
+			Glib::filename_to_uri(filepath.toStdString()))) {
+			return;
 		}
+	} catch (const Glib::Error &e) {
+		LOG(("App Error: %1").arg(QString::fromStdString(e.what())));
 	}
+
+	if (UnsafeShowOpenWith(filepath)) {
+		return;
+	}
+
+	QDesktopServices::openUrl(QUrl::fromLocalFile(filepath));
 }
 
 } // namespace File
diff --git a/Telegram/SourceFiles/platform/linux/linux_gdk_helper.cpp b/Telegram/SourceFiles/platform/linux/linux_gdk_helper.cpp
index 9a067ec80..cf9c1740d 100644
--- a/Telegram/SourceFiles/platform/linux/linux_gdk_helper.cpp
+++ b/Telegram/SourceFiles/platform/linux/linux_gdk_helper.cpp
@@ -12,9 +12,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
 extern "C" {
-#undef signals
 #include <gdk/gdkx.h>
-#define signals public
 } // extern "C"
 #endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
 
diff --git a/Telegram/SourceFiles/platform/linux/linux_gdk_helper.h b/Telegram/SourceFiles/platform/linux/linux_gdk_helper.h
index 6ddee649b..6ca953689 100644
--- a/Telegram/SourceFiles/platform/linux/linux_gdk_helper.h
+++ b/Telegram/SourceFiles/platform/linux/linux_gdk_helper.h
@@ -10,10 +10,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 class QLibrary;
 
 extern "C" {
-#undef signals
 #include <gtk/gtk.h>
 #include <gdk/gdk.h>
-#define signals public
 } // extern "C"
 
 namespace Platform {
diff --git a/Telegram/SourceFiles/platform/linux/linux_gsd_media_keys.cpp b/Telegram/SourceFiles/platform/linux/linux_gsd_media_keys.cpp
index 6ea0c8d14..4151736de 100644
--- a/Telegram/SourceFiles/platform/linux/linux_gsd_media_keys.cpp
+++ b/Telegram/SourceFiles/platform/linux/linux_gsd_media_keys.cpp
@@ -9,15 +9,11 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "core/sandbox.h"
 #include "media/player/media_player_instance.h"
+#include "base/platform/linux/base_linux_glibmm_helper.h"
+#include "base/platform/linux/base_linux_dbus_utilities.h"
 
-#include <QtDBus/QDBusConnection>
-#include <QtDBus/QDBusConnectionInterface>
-
-extern "C" {
-#undef signals
-#include <gio/gio.h>
-#define signals public
-} // extern "C"
+#include <glibmm.h>
+#include <giomm.h>
 
 namespace Platform {
 namespace internal {
@@ -31,149 +27,137 @@ constexpr auto kMATEObjectPath = "/org/mate/SettingsDaemon/MediaKeys"_cs;
 constexpr auto kInterface = kService;
 constexpr auto kMATEInterface = "org.mate.SettingsDaemon.MediaKeys"_cs;
 
-void KeyPressed(
-		GDBusConnection *connection,
-		const gchar *sender_name,
-		const gchar *object_path,
-		const gchar *interface_name,
-		const gchar *signal_name,
-		GVariant *parameters,
-		gpointer user_data) {
-	gchar *appUtf8;
-	gchar *keyUtf8;
-	g_variant_get(parameters, "(ss)", &appUtf8, &keyUtf8);
-	const auto app = QString::fromUtf8(appUtf8);
-	const auto key = QString::fromUtf8(keyUtf8);
-	g_free(keyUtf8);
-	g_free(appUtf8);
-
-	if (app != QCoreApplication::applicationName()) {
-		return;
-	}
-
-	Core::Sandbox::Instance().customEnterFromEventLoop([&] {
-		if (key == qstr("Play")) {
-			Media::Player::instance()->playPause();
-		} else if (key == qstr("Stop")) {
-			Media::Player::instance()->stop();
-		} else if (key == qstr("Next")) {
-			Media::Player::instance()->next();
-		} else if (key == qstr("Previous")) {
-			Media::Player::instance()->previous();
-		}
-	});
-}
-
 } // namespace
 
-GSDMediaKeys::GSDMediaKeys() {
-	GError *error = nullptr;
-	const auto interface = QDBusConnection::sessionBus().interface();
+class GSDMediaKeys::Private : public sigc::trackable {
+public:
+	Glib::RefPtr<Gio::DBus::Connection> dbusConnection;
 
-	if (!interface) {
-		return;
+	Glib::ustring service;
+	Glib::ustring objectPath;
+	Glib::ustring interface;
+	uint signalId = 0;
+	bool grabbed = false;
+
+	void keyPressed(
+		const Glib::RefPtr<Gio::DBus::Connection> &connection,
+		const Glib::ustring &sender_name,
+		const Glib::ustring &object_path,
+		const Glib::ustring &interface_name,
+		const Glib::ustring &signal_name,
+		const Glib::VariantContainerBase &parameters);
+};
+
+void GSDMediaKeys::Private::keyPressed(
+		const Glib::RefPtr<Gio::DBus::Connection> &connection,
+		const Glib::ustring &sender_name,
+		const Glib::ustring &object_path,
+		const Glib::ustring &interface_name,
+		const Glib::ustring &signal_name,
+		const Glib::VariantContainerBase &parameters) {
+	try {
+		auto parametersCopy = parameters;
+
+		const auto app = base::Platform::GlibVariantCast<Glib::ustring>(
+			parametersCopy.get_child(0));
+
+		const auto key = base::Platform::GlibVariantCast<Glib::ustring>(
+			parametersCopy.get_child(1));
+
+		if (app != QCoreApplication::applicationName().toStdString()) {
+			return;
+		}
+
+		Core::Sandbox::Instance().customEnterFromEventLoop([&] {
+			if (key == "Play") {
+				Media::Player::instance()->playPause();
+			} else if (key == "Stop") {
+				Media::Player::instance()->stop();
+			} else if (key == "Next") {
+				Media::Player::instance()->next();
+			} else if (key == "Previous") {
+				Media::Player::instance()->previous();
+			}
+		});
+	} catch (...) {
 	}
+}
 
-	if (interface->isServiceRegistered(kService.utf16())) {
-		_service = kService.utf16();
-		_objectPath = kObjectPath.utf16();
-		_interface = kInterface.utf16();
-	} else if (interface->isServiceRegistered(kOldService.utf16())) {
-		_service = kOldService.utf16();
-		_objectPath = kObjectPath.utf16();
-		_interface = kInterface.utf16();
-	} else if (interface->isServiceRegistered(kMATEService.utf16())) {
-		_service = kMATEService.utf16();
-		_objectPath = kMATEObjectPath.utf16();
-		_interface = kMATEInterface.utf16();
-	} else {
-		return;
+GSDMediaKeys::GSDMediaKeys()
+: _private(std::make_unique<Private>()) {
+	try {
+		_private->dbusConnection = Gio::DBus::Connection::get_sync(
+			Gio::DBus::BusType::BUS_TYPE_SESSION);
+
+		if (base::Platform::DBus::NameHasOwner(
+			_private->dbusConnection,
+			std::string(kService))) {
+			_private->service = std::string(kService);
+			_private->objectPath = std::string(kObjectPath);
+			_private->interface = std::string(kInterface);
+		} else if (base::Platform::DBus::NameHasOwner(
+			_private->dbusConnection,
+			std::string(kOldService))) {
+			_private->service = std::string(kOldService);
+			_private->objectPath = std::string(kObjectPath);
+			_private->interface = std::string(kInterface);
+		} else if (base::Platform::DBus::NameHasOwner(
+			_private->dbusConnection,
+			std::string(kMATEService))) {
+			_private->service = std::string(kMATEService);
+			_private->objectPath = std::string(kMATEObjectPath);
+			_private->interface = std::string(kMATEInterface);
+		} else {
+			return;
+		}
+
+		_private->dbusConnection->call_sync(
+			_private->objectPath,
+			_private->interface,
+			"GrabMediaPlayerKeys",
+			base::Platform::MakeGlibVariant(std::tuple{
+				Glib::ustring(
+					QCoreApplication::applicationName()
+						.toStdString()),
+				uint(0),
+			}),
+			_private->service);
+
+		_private->grabbed = true;
+
+		_private->signalId = _private->dbusConnection->signal_subscribe(
+			sigc::mem_fun(_private.get(), &Private::keyPressed),
+			_private->service,
+			_private->interface,
+			"MediaPlayerKeyPressed",
+			_private->objectPath);
+	} catch (...) {
 	}
-
-	_dbusConnection = g_bus_get_sync(
-		G_BUS_TYPE_SESSION,
-		nullptr,
-		&error);
-
-	if (error) {
-		LOG(("GSD Media Keys Error: %1").arg(error->message));
-		g_error_free(error);
-		return;
-	}
-
-	auto reply = g_dbus_connection_call_sync(
-		_dbusConnection,
-		_service.toUtf8().constData(),
-		_objectPath.toUtf8().constData(),
-		_interface.toUtf8().constData(),
-		"GrabMediaPlayerKeys",
-		g_variant_new(
-			"(su)",
-			QCoreApplication::applicationName().toUtf8().constData(),
-			0),
-		nullptr,
-		G_DBUS_CALL_FLAGS_NONE,
-		-1,
-		nullptr,
-		&error);
-
-	if (!error) {
-		_grabbed = true;
-		g_variant_unref(reply);
-	} else {
-		LOG(("GSD Media Keys Error: %1").arg(error->message));
-		g_error_free(error);
-	}
-
-	_signalId = g_dbus_connection_signal_subscribe(
-		_dbusConnection,
-		_service.toUtf8().constData(),
-		_interface.toUtf8().constData(),
-		"MediaPlayerKeyPressed",
-		_objectPath.toUtf8().constData(),
-		nullptr,
-		G_DBUS_SIGNAL_FLAGS_NONE,
-		KeyPressed,
-		nullptr,
-		nullptr);
 }
 
 GSDMediaKeys::~GSDMediaKeys() {
-	GError *error = nullptr;
-
-	if (_signalId != 0) {
-		g_dbus_connection_signal_unsubscribe(
-			_dbusConnection,
-			_signalId);
-	}
-
-	if (_grabbed) {
-		auto reply = g_dbus_connection_call_sync(
-			_dbusConnection,
-			_service.toUtf8().constData(),
-			_objectPath.toUtf8().constData(),
-			_interface.toUtf8().constData(),
-			"ReleaseMediaPlayerKeys",
-			g_variant_new(
-				"(s)",
-				QCoreApplication::applicationName().toUtf8().constData()),
-			nullptr,
-			G_DBUS_CALL_FLAGS_NONE,
-			-1,
-			nullptr,
-			&error);
-
-		if (!error) {
-			_grabbed = false;
-			g_variant_unref(reply);
-		} else {
-			LOG(("GSD Media Keys Error: %1").arg(error->message));
-			g_error_free(error);
+	if (_private->dbusConnection) {
+		if (_private->signalId != 0) {
+			_private->dbusConnection->signal_unsubscribe(_private->signalId);
 		}
-	}
 
-	if (_dbusConnection) {
-		g_object_unref(_dbusConnection);
+		if (_private->grabbed) {
+			try {
+				_private->dbusConnection->call_sync(
+					_private->objectPath,
+					_private->interface,
+					"ReleaseMediaPlayerKeys",
+					base::Platform::MakeGlibVariant(std::tuple{
+						Glib::ustring(
+							QCoreApplication::applicationName()
+								.toStdString())
+					}),
+					_private->service);
+
+				_private->grabbed = false;
+			} catch (...) {
+			}
+		}
 	}
 }
 
diff --git a/Telegram/SourceFiles/platform/linux/linux_gsd_media_keys.h b/Telegram/SourceFiles/platform/linux/linux_gsd_media_keys.h
index f3a87ba81..10b854d6e 100644
--- a/Telegram/SourceFiles/platform/linux/linux_gsd_media_keys.h
+++ b/Telegram/SourceFiles/platform/linux/linux_gsd_media_keys.h
@@ -7,8 +7,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 */
 #pragma once
 
-typedef struct _GDBusConnection GDBusConnection;
-
 namespace Platform {
 namespace internal {
 
@@ -24,12 +22,8 @@ public:
 	~GSDMediaKeys();
 
 private:
-	GDBusConnection *_dbusConnection = nullptr;
-	QString _service;
-	QString _objectPath;
-	QString _interface;
-	uint _signalId = 0;
-	bool _grabbed = false;
+	class Private;
+	const std::unique_ptr<Private> _private;
 };
 
 } // namespace internal
diff --git a/Telegram/SourceFiles/platform/linux/linux_gtk_integration_p.h b/Telegram/SourceFiles/platform/linux/linux_gtk_integration_p.h
index d2c9e9207..66ace0eb3 100644
--- a/Telegram/SourceFiles/platform/linux/linux_gtk_integration_p.h
+++ b/Telegram/SourceFiles/platform/linux/linux_gtk_integration_p.h
@@ -8,10 +8,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #pragma once
 
 extern "C" {
-#undef signals
 #include <gtk/gtk.h>
 #include <gdk/gdk.h>
-#define signals public
 } // extern "C"
 
 // To be able to compile with gtk-2.0 headers as well
diff --git a/Telegram/SourceFiles/platform/linux/linux_notification_service_watcher.cpp b/Telegram/SourceFiles/platform/linux/linux_notification_service_watcher.cpp
index 3198eed94..ae7953bc6 100644
--- a/Telegram/SourceFiles/platform/linux/linux_notification_service_watcher.cpp
+++ b/Telegram/SourceFiles/platform/linux/linux_notification_service_watcher.cpp
@@ -10,16 +10,39 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "core/application.h"
 #include "main/main_domain.h"
 #include "window/notifications_manager.h"
-#include "platform/linux/specific_linux.h"
+#include "base/platform/linux/base_linux_dbus_utilities.h"
 
 #include <QtDBus/QDBusConnection>
 
 namespace Platform {
 namespace internal {
+namespace {
+
+constexpr auto kNotificationService = "org.freedesktop.Notifications"_cs;
+
+bool IsNotificationServiceActivatable() {
+	static const auto Result = [] {
+		try {
+			const auto connection = Gio::DBus::Connection::get_sync(
+				Gio::DBus::BusType::BUS_TYPE_SESSION);
+
+			return ranges::contains(
+				base::Platform::DBus::ListActivatableNames(connection),
+				Glib::ustring(std::string(kNotificationService)));
+		} catch (...) {
+		}
+
+		return false;
+	}();
+
+	return Result;
+}
+
+} // namespace
 
 NotificationServiceWatcher::NotificationServiceWatcher()
 : _dbusWatcher(
-		qsl("org.freedesktop.Notifications"),
+		kNotificationService.utf16(),
 		QDBusConnection::sessionBus(),
 		QDBusServiceWatcher::WatchForOwnerChange) {
 	const auto signal = &QDBusServiceWatcher::serviceOwnerChanged;
diff --git a/Telegram/SourceFiles/platform/linux/main_window_linux.cpp b/Telegram/SourceFiles/platform/linux/main_window_linux.cpp
index 9028a936a..879ea90ee 100644
--- a/Telegram/SourceFiles/platform/linux/main_window_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/main_window_linux.cpp
@@ -30,6 +30,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "facades.h"
 #include "app.h"
 
+#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+#include "base/platform/linux/base_linux_dbus_utilities.h"
+#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+
 #ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
 #include "base/platform/linux/base_linux_xcb_utilities.h"
 #endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
@@ -41,7 +45,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 #include <QtDBus/QDBusInterface>
 #include <QtDBus/QDBusConnection>
-#include <QtDBus/QDBusConnectionInterface>
 #include <QtDBus/QDBusServiceWatcher>
 #include <QtDBus/QDBusMessage>
 #include <QtDBus/QDBusReply>
@@ -52,11 +55,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <statusnotifieritem.h>
 #include <dbusmenuexporter.h>
 
-extern "C" {
-#undef signals
-#include <gio/gio.h>
-#define signals public
-} // extern "C"
+#include <glibmm.h>
+#include <giomm.h>
 #endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 namespace Platform {
@@ -337,19 +337,23 @@ bool IsIndicatorApplication() {
 	// save the icon to a temp file
 	// and set the icon name to that filename.
 	static const auto Result = [] {
-		const auto interface = QDBusConnection::sessionBus().interface();
+		try {
+			const auto connection = Gio::DBus::Connection::get_sync(
+				Gio::DBus::BusType::BUS_TYPE_SESSION);
 
-		if (!interface) {
-			return false;
+			const auto ubuntuIndicator = base::Platform::DBus::NameHasOwner(
+				connection,
+				"com.canonical.indicator.application");
+
+			const auto ayatanaIndicator = base::Platform::DBus::NameHasOwner(
+				connection,
+				"org.ayatana.indicator.application");
+
+			return ubuntuIndicator || ayatanaIndicator;
+		} catch (...) {
 		}
 
-		const auto ubuntuIndicator = interface->isServiceRegistered(
-			qsl("com.canonical.indicator.application"));
-
-		const auto ayatanaIndicator = interface->isServiceRegistered(
-			qsl("org.ayatana.indicator.application"));
-
-		return ubuntuIndicator || ayatanaIndicator;
+		return false;
 	}();
 
 	return Result;
@@ -461,13 +465,17 @@ quint32 djbStringHash(QString string) {
 }
 
 bool IsAppMenuSupported() {
-	const auto interface = QDBusConnection::sessionBus().interface();
+	try {
+		const auto connection = Gio::DBus::Connection::get_sync(
+			Gio::DBus::BusType::BUS_TYPE_SESSION);
 
-	if (!interface) {
-		return false;
+		return base::Platform::DBus::NameHasOwner(
+			connection,
+			std::string(kAppMenuService));
+	} catch (...) {
 	}
 
-	return interface->isServiceRegistered(kAppMenuService.utf16());
+	return false;
 }
 
 void RegisterAppMenu(uint winId, const QString &menuPath) {
@@ -527,8 +535,16 @@ void ForceDisabled(QAction *action, bool disabled) {
 
 } // namespace
 
+class MainWindow::Private {
+public:
+#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+	Glib::RefPtr<Gio::DBus::Connection> dbusConnection;
+#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+};
+
 MainWindow::MainWindow(not_null<Window::Controller*> controller)
-: Window::MainWindow(controller) {
+: Window::MainWindow(controller)
+, _private(std::make_unique<Private>()) {
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 	qDBusRegisterMetaType<ToolTip>();
 	qDBusRegisterMetaType<IconPixmap>();
@@ -540,22 +556,31 @@ void MainWindow::initHook() {
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 	_sniAvailable = IsSNIAvailable();
 
-	_sniDBusProxy = g_dbus_proxy_new_for_bus_sync(
-		G_BUS_TYPE_SESSION,
-		G_DBUS_PROXY_FLAGS_NONE,
-		nullptr,
-		kSNIWatcherService.utf8().constData(),
-		kSNIWatcherObjectPath.utf8().constData(),
-		kSNIWatcherInterface.utf8().constData(),
-		nullptr,
-		nullptr);
+	try {
+		_private->dbusConnection = Gio::DBus::Connection::get_sync(
+			Gio::DBus::BusType::BUS_TYPE_SESSION);
 
-	if (_sniDBusProxy) {
-		g_signal_connect(
-			_sniDBusProxy,
-			"g-signal",
-			G_CALLBACK(sniSignalEmitted),
-			nullptr);
+		_sniRegisteredSignalId = _private->dbusConnection->signal_subscribe(
+			[](
+				const Glib::RefPtr<Gio::DBus::Connection> &connection,
+				const Glib::ustring &sender_name,
+				const Glib::ustring &object_path,
+				const Glib::ustring &interface_name,
+				const Glib::ustring &signal_name,
+				const Glib::VariantContainerBase &parameters) {
+				if (signal_name == "StatusNotifierHostRegistered") {
+					crl::on_main([] {
+						if (const auto window = App::wnd()) {
+							window->handleSNIHostRegistered();
+						}
+					});
+				}
+			},
+			std::string(kSNIWatcherService),
+			std::string(kSNIWatcherInterface),
+			"StatusNotifierHostRegistered",
+			std::string(kSNIWatcherObjectPath));
+	} catch (...) {
 	}
 
 	auto sniWatcher = new QDBusServiceWatcher(
@@ -689,21 +714,6 @@ void MainWindow::attachToSNITrayIcon() {
 	});
 }
 
-void MainWindow::sniSignalEmitted(
-		GDBusProxy *proxy,
-		gchar *sender_name,
-		gchar *signal_name,
-		GVariant *parameters,
-		gpointer user_data) {
-	if (signal_name == qstr("StatusNotifierHostRegistered")) {
-		crl::on_main([] {
-			if (const auto window = App::wnd()) {
-				window->handleSNIHostRegistered();
-			}
-		});
-	}
-}
-
 void MainWindow::handleSNIHostRegistered() {
 	if (_sniAvailable) {
 		return;
@@ -1241,6 +1251,10 @@ void MainWindow::handleVisibleChangedHook(bool visible) {
 
 MainWindow::~MainWindow() {
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+	if (_sniRegisteredSignalId != 0) {
+		_private->dbusConnection->signal_unsubscribe(_sniRegisteredSignalId);
+	}
+
 	delete _sniTrayIcon;
 
 	if (_appMenuSupported) {
@@ -1249,10 +1263,6 @@ MainWindow::~MainWindow() {
 
 	delete _mainMenuExporter;
 	delete psMainMenu;
-
-	if (_sniDBusProxy) {
-		g_object_unref(_sniDBusProxy);
-	}
 #endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 }
 
diff --git a/Telegram/SourceFiles/platform/linux/main_window_linux.h b/Telegram/SourceFiles/platform/linux/main_window_linux.h
index cc2ca4f16..8f92b35dd 100644
--- a/Telegram/SourceFiles/platform/linux/main_window_linux.h
+++ b/Telegram/SourceFiles/platform/linux/main_window_linux.h
@@ -18,11 +18,6 @@ class PopupMenu;
 class QTemporaryFile;
 class DBusMenuExporter;
 class StatusNotifierItem;
-
-typedef void* gpointer;
-typedef char gchar;
-typedef struct _GVariant GVariant;
-typedef struct _GDBusProxy GDBusProxy;
 #endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 namespace Platform {
@@ -75,6 +70,8 @@ protected:
 		style::color color) = 0;
 
 private:
+	class Private;
+	const std::unique_ptr<Private> _private;
 	bool _sniAvailable = false;
 	base::unique_qptr<Ui::PopupMenu> _trayIconMenuXEmbed;
 
@@ -82,7 +79,7 @@ private:
 
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 	StatusNotifierItem *_sniTrayIcon = nullptr;
-	GDBusProxy *_sniDBusProxy = nullptr;
+	uint _sniRegisteredSignalId = 0;
 	std::unique_ptr<QTemporaryFile> _trayIconFile;
 
 	bool _appMenuSupported = false;
@@ -137,13 +134,6 @@ private:
 	void psLinuxStrikeOut();
 	void psLinuxMonospace();
 	void psLinuxClearFormat();
-
-	static void sniSignalEmitted(
-		GDBusProxy *proxy,
-		gchar *sender_name,
-		gchar *signal_name,
-		GVariant *parameters,
-		gpointer user_data);
 #endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 };
diff --git a/Telegram/SourceFiles/platform/linux/notifications_manager_linux.cpp b/Telegram/SourceFiles/platform/linux/notifications_manager_linux.cpp
index fc856bfe2..67c819f53 100644
--- a/Telegram/SourceFiles/platform/linux/notifications_manager_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/notifications_manager_linux.cpp
@@ -10,6 +10,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include "window/notifications_utilities.h"
 #include "base/platform/base_platform_info.h"
+#include "base/platform/linux/base_linux_glibmm_helper.h"
+#include "base/platform/linux/base_linux_dbus_utilities.h"
 #include "platform/linux/specific_linux.h"
 #include "core/application.h"
 #include "core/core_settings.h"
@@ -19,7 +21,6 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 
 #include <QtCore/QVersionNumber>
 #include <QtDBus/QDBusConnection>
-#include <QtDBus/QDBusConnectionInterface>
 #include <QtDBus/QDBusMessage>
 #include <QtDBus/QDBusPendingCall>
 #include <QtDBus/QDBusPendingCallWatcher>
@@ -27,11 +28,8 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include <QtDBus/QDBusReply>
 #include <QtDBus/QDBusError>
 
-extern "C" {
-#undef signals
-#include <gio/gio.h>
-#define signals public
-} // extern "C"
+#include <glibmm.h>
+#include <giomm.h>
 
 namespace Platform {
 namespace Notifications {
@@ -55,15 +53,25 @@ std::optional<ServerInformation> CurrentServerInformation;
 QStringList CurrentCapabilities;
 
 bool GetServiceRegistered() {
-	const auto interface = QDBusConnection::sessionBus().interface();
-	const auto activatable = IsNotificationServiceActivatable();
+	try {
+		const auto connection = Gio::DBus::Connection::get_sync(
+			Gio::DBus::BusType::BUS_TYPE_SESSION);
 
-	return interface
-		? interface->isServiceRegistered(kService.utf16()) || activatable
-		: activatable;
+		static const auto activatable = ranges::contains(
+			base::Platform::DBus::ListActivatableNames(connection),
+			Glib::ustring(std::string(kService)));
+
+		return base::Platform::DBus::NameHasOwner(
+				connection,
+				std::string(kService)) || activatable;
+	} catch (...) {
+	}
+
+	return false;
 }
 
-void GetServerInformation(Fn<void(std::optional<ServerInformation>)> callback) {
+void GetServerInformation(
+		Fn<void(std::optional<ServerInformation>)> callback) {
 	using ServerInformationReply = QDBusPendingReply<
 		QString,
 		QString,
@@ -229,24 +237,24 @@ ServerInformation CurrentServerInformationValue() {
 	return CurrentServerInformation.value_or(ServerInformation{});
 }
 
-QString GetImageKey(const QVersionNumber &specificationVersion) {
+Glib::ustring GetImageKey(const QVersionNumber &specificationVersion) {
 	const auto normalizedVersion = specificationVersion.normalized();
 
 	if (normalizedVersion.isNull()) {
 		LOG(("Native Notification Error: specification version is null"));
-		return QString();
+		return {};
 	}
 
 	if (normalizedVersion >= QVersionNumber(1, 2)) {
-		return qsl("image-data");
+		return "image-data";
 	} else if (normalizedVersion == QVersionNumber(1, 1)) {
-		return qsl("image_data");
+		return "image_data";
 	}
 
-	return qsl("icon_data");
+	return "icon_data";
 }
 
-class NotificationData {
+class NotificationData : public sigc::trackable {
 public:
 	using NotificationId = Window::Notifications::Manager::NotificationId;
 
@@ -270,40 +278,35 @@ public:
 	void setImage(const QString &imagePath);
 
 private:
-	GDBusConnection *_dbusConnection = nullptr;
+	Glib::RefPtr<Gio::DBus::Connection> _dbusConnection;
 	base::weak_ptr<Manager> _manager;
-	GCancellable *_cancellable = nullptr;
 
-	QString _title;
-	QString _body;
-	std::vector<QString> _actions;
-	base::flat_map<QString, GVariant*> _hints;
-	QString _imageKey;
-	QImage _image;
+	Glib::ustring _title;
+	Glib::ustring _body;
+	std::vector<Glib::ustring> _actions;
+	std::map<Glib::ustring, Glib::VariantBase> _hints;
+	Glib::ustring _imageKey;
 
 	uint _notificationId = 0;
-	guint _actionInvokedSignalId = 0;
-	guint _notificationRepliedSignalId = 0;
-	guint _notificationClosedSignalId = 0;
+	uint _actionInvokedSignalId = 0;
+	uint _notificationRepliedSignalId = 0;
+	uint _notificationClosedSignalId = 0;
 	NotificationId _id;
 
 	void notificationClosed(uint id, uint reason);
-	void actionInvoked(uint id, const QString &actionName);
-	void notificationReplied(uint id, const QString &text);
+	void actionInvoked(uint id, const Glib::ustring &actionName);
+	void notificationReplied(uint id, const Glib::ustring &text);
 
-	static void notificationShown(
-		GObject *source_object,
-		GAsyncResult *res,
-		gpointer user_data);
+	void notificationShown(
+		const Glib::RefPtr<Gio::AsyncResult> &result);
 
-	static void signalEmitted(
-		GDBusConnection *connection,
-		const gchar *sender_name,
-		const gchar *object_path,
-		const gchar *interface_name,
-		const gchar *signal_name,
-		GVariant *parameters,
-		gpointer user_data);
+	void signalEmitted(
+		const Glib::RefPtr<Gio::DBus::Connection> &connection,
+		const Glib::ustring &sender_name,
+		const Glib::ustring &object_path,
+		const Glib::ustring &interface_name,
+		const Glib::ustring &signal_name,
+		const Glib::VariantContainerBase &parameters);
 
 };
 
@@ -317,20 +320,16 @@ NotificationData::NotificationData(
 	NotificationId id,
 	bool hideReplyButton)
 : _manager(manager)
-, _cancellable(g_cancellable_new())
-, _title(title)
+, _title(title.toStdString())
 , _imageKey(GetImageKey(CurrentServerInformationValue().specVersion))
 , _id(id) {
-	GError *error = nullptr;
+	try {
+		_dbusConnection = Gio::DBus::Connection::get_sync(
+			Gio::DBus::BusType::BUS_TYPE_SESSION);
+	} catch (const Glib::Error &e) {
+		LOG(("Native Notification Error: %1").arg(
+			QString::fromStdString(e.what())));
 
-	_dbusConnection = g_bus_get_sync(
-		G_BUS_TYPE_SESSION,
-		nullptr,
-		&error);
-
-	if (error) {
-		LOG(("Native Notification Error: %1").arg(error->message));
-		g_error_free(error);
 		return;
 	}
 
@@ -338,300 +337,236 @@ NotificationData::NotificationData(
 
 	if (capabilities.contains(qsl("body-markup"))) {
 		_body = subtitle.isEmpty()
-			? msg.toHtmlEscaped()
+			? msg.toHtmlEscaped().toStdString()
 			: qsl("<b>%1</b>\n%2")
 				.arg(subtitle.toHtmlEscaped())
-				.arg(msg.toHtmlEscaped());
+				.arg(msg.toHtmlEscaped()).toStdString();
 	} else {
 		_body = subtitle.isEmpty()
-			? msg
-			: qsl("%1\n%2").arg(subtitle).arg(msg);
+			? msg.toStdString()
+			: qsl("%1\n%2").arg(subtitle).arg(msg).toStdString();
 	}
 
-	if (capabilities.contains(qsl("actions"))) {
-		_actions.push_back(qsl("default"));
-		_actions.push_back(QString());
+	if (capabilities.contains("actions")) {
+		_actions.push_back("default");
+		_actions.push_back({});
 
 		if (!hideReplyButton) {
-			_actions.push_back(qsl("mail-mark-read"));
-			_actions.push_back(tr::lng_context_mark_read(tr::now));
+			_actions.push_back("mail-mark-read");
+			_actions.push_back(
+				tr::lng_context_mark_read(tr::now).toStdString());
 		}
 
-		if (capabilities.contains(qsl("inline-reply")) && !hideReplyButton) {
-			_actions.push_back(qsl("inline-reply"));
-			_actions.push_back(tr::lng_notification_reply(tr::now));
+		if (capabilities.contains("inline-reply") && !hideReplyButton) {
+			_actions.push_back("inline-reply");
+			_actions.push_back(
+				tr::lng_notification_reply(tr::now).toStdString());
 
-			_notificationRepliedSignalId = g_dbus_connection_signal_subscribe(
-				_dbusConnection,
-				kService.utf8().constData(),
-				kInterface.utf8().constData(),
+			_notificationRepliedSignalId = _dbusConnection->signal_subscribe(
+				sigc::mem_fun(this, &NotificationData::signalEmitted),
+				std::string(kService),
+				std::string(kInterface),
 				"NotificationReplied",
-				kObjectPath.utf8().constData(),
-				nullptr,
-				G_DBUS_SIGNAL_FLAGS_NONE,
-				signalEmitted,
-				this,
-				nullptr);
+				std::string(kObjectPath));
 		} else {
 			// icon name according to https://specifications.freedesktop.org/icon-naming-spec/icon-naming-spec-latest.html
-			_actions.push_back(qsl("mail-reply-sender"));
-			_actions.push_back(tr::lng_notification_reply(tr::now));
+			_actions.push_back("mail-reply-sender");
+			_actions.push_back(
+				tr::lng_notification_reply(tr::now).toStdString());
 		}
 
-		_actionInvokedSignalId = g_dbus_connection_signal_subscribe(
-			_dbusConnection,
-			kService.utf8().constData(),
-			kInterface.utf8().constData(),
+		_actionInvokedSignalId = _dbusConnection->signal_subscribe(
+			sigc::mem_fun(this, &NotificationData::signalEmitted),
+			std::string(kService),
+			std::string(kInterface),
 			"ActionInvoked",
-			kObjectPath.utf8().constData(),
-			nullptr,
-			G_DBUS_SIGNAL_FLAGS_NONE,
-			signalEmitted,
-			this,
-			nullptr);
+			std::string(kObjectPath));
 	}
 
-	if (capabilities.contains(qsl("action-icons"))) {
-		_hints.emplace(qsl("action-icons"), g_variant_new_boolean(true));
+	if (capabilities.contains("action-icons")) {
+		_hints["action-icons"] = Glib::Variant<bool>::create(true);
 	}
 
 	// suppress system sound if telegram sound activated,
 	// otherwise use system sound
-	if (capabilities.contains(qsl("sound"))) {
+	if (capabilities.contains("sound")) {
 		if (Core::App().settings().soundNotify()) {
-			_hints.emplace(
-				qsl("suppress-sound"),
-				g_variant_new_boolean(true));
+			_hints["suppress-sound"] = Glib::Variant<bool>::create(true);
 		} else {
 			// sound name according to http://0pointer.de/public/sound-naming-spec.html
-			_hints.emplace(
-				qsl("sound-name"),
-				g_variant_new_string("message-new-instant"));
+			_hints["sound-name"] = Glib::Variant<Glib::ustring>::create(
+				"message-new-instant");
 		}
 	}
 
-	if (capabilities.contains(qsl("x-canonical-append"))) {
-		_hints.emplace(
-			qsl("x-canonical-append"),
-			g_variant_new_string("true"));
+	if (capabilities.contains("x-canonical-append")) {
+		_hints["x-canonical-append"] = Glib::Variant<Glib::ustring>::create(
+			"true");
 	}
 
-	_hints.emplace(qsl("category"), g_variant_new_string("im.received"));
+	_hints["category"] = Glib::Variant<Glib::ustring>::create("im.received");
 
-	_hints.emplace(
-		qsl("desktop-entry"),
-		g_variant_new_string(GetLauncherBasename().toUtf8().constData()));
+	_hints["desktop-entry"] = Glib::Variant<Glib::ustring>::create(
+		GetLauncherBasename().toStdString());
 
-	_notificationClosedSignalId = g_dbus_connection_signal_subscribe(
-		_dbusConnection,
-		kService.utf8().constData(),
-		kInterface.utf8().constData(),
+	_notificationClosedSignalId = _dbusConnection->signal_subscribe(
+		sigc::mem_fun(this, &NotificationData::signalEmitted),
+		std::string(kService),
+		std::string(kInterface),
 		"NotificationClosed",
-		kObjectPath.utf8().constData(),
-		nullptr,
-		G_DBUS_SIGNAL_FLAGS_NONE,
-		signalEmitted,
-		this,
-		nullptr);
+		std::string(kObjectPath));
 }
 
 NotificationData::~NotificationData() {
 	if (_dbusConnection) {
 		if (_actionInvokedSignalId != 0) {
-			g_dbus_connection_signal_unsubscribe(
-				_dbusConnection,
-				_actionInvokedSignalId);
+			_dbusConnection->signal_unsubscribe(_actionInvokedSignalId);
 		}
 
 		if (_notificationRepliedSignalId != 0) {
-			g_dbus_connection_signal_unsubscribe(
-				_dbusConnection,
-				_notificationRepliedSignalId);
+			_dbusConnection->signal_unsubscribe(_notificationRepliedSignalId);
 		}
 
 		if (_notificationClosedSignalId != 0) {
-			g_dbus_connection_signal_unsubscribe(
-				_dbusConnection,
-				_notificationClosedSignalId);
-		}
-
-		g_object_unref(_dbusConnection);
-	}
-
-	for (const auto &[key, value] : _hints) {
-		if (value) {
-			g_variant_unref(value);
+			_dbusConnection->signal_unsubscribe(_notificationClosedSignalId);
 		}
 	}
-
-	g_cancellable_cancel(_cancellable);
-	g_object_unref(_cancellable);
 }
 
 void NotificationData::show() {
-	GVariantBuilder actionsBuilder, hintsBuilder;
-	GError *error = nullptr;
+	try {
+		const auto iconName = _imageKey.empty()
+			|| _hints.find(_imageKey) == end(_hints)
+				? Glib::ustring(GetIconName().toStdString())
+				: Glib::ustring();
 
-	g_variant_builder_init(&actionsBuilder, G_VARIANT_TYPE("as"));
-	for (const auto &value : _actions) {
-		g_variant_builder_add(
-			&actionsBuilder,
-			"s",
-			value.toUtf8().constData());
-	}
+		_dbusConnection->call(
+			std::string(kObjectPath),
+			std::string(kInterface),
+			"Notify",
+			base::Platform::MakeGlibVariant(std::tuple{
+				Glib::ustring(std::string(AppName)),
+				uint(0),
+				iconName,
+				_title,
+				_body,
+				_actions,
+				_hints,
+				-1,
+			}),
+			sigc::mem_fun(this, &NotificationData::notificationShown),
+			std::string(kService));
+	} catch (const Glib::Error &e) {
+		LOG(("Native Notification Error: %1").arg(
+			QString::fromStdString(e.what())));
 
-	g_variant_builder_init(&hintsBuilder, G_VARIANT_TYPE("a{sv}"));
-	for (auto &[key, value] : _hints) {
-		g_variant_builder_add(
-			&hintsBuilder,
-			"{sv}",
-			key.toUtf8().constData(),
-			value);
-
-		value = nullptr;
-	}
-
-	const auto iconName = _imageKey.isEmpty() || !_hints.contains(_imageKey)
-		? GetIconName()
-		: QString();
-
-	g_dbus_connection_call(
-		_dbusConnection,
-		kService.utf8().constData(),
-		kObjectPath.utf8().constData(),
-		kInterface.utf8().constData(),
-		"Notify",
-		g_variant_new(
-			"(susssasa{sv}i)",
-			AppName.utf8().constData(),
-			0,
-			iconName.toUtf8().constData(),
-			_title.toUtf8().constData(),
-			_body.toUtf8().constData(),
-			&actionsBuilder,
-			&hintsBuilder,
-			-1),
-		nullptr,
-		G_DBUS_CALL_FLAGS_NONE,
-		-1,
-		_cancellable,
-		notificationShown,
-		this);
-}
-
-void NotificationData::notificationShown(
-		GObject *source_object,
-		GAsyncResult *res,
-		gpointer user_data) {
-	GError *error = nullptr;
-
-	auto reply = g_dbus_connection_call_finish(
-		reinterpret_cast<GDBusConnection*>(source_object),
-		res,
-		&error);
-
-	if (error && error->code == G_IO_ERROR_CANCELLED) {
-		g_error_free(error);
-		return;
-	}
-
-	const auto notificationData = reinterpret_cast<NotificationData*>(
-		user_data);
-
-	if (!notificationData) {
-		return;
-	}
-
-	if (!error) {
-		g_variant_get(reply, "(u)", &notificationData->_notificationId);
-		g_variant_unref(reply);
-	} else {
-		const auto manager = notificationData->_manager;
-		const auto my = notificationData->_id;
+		const auto manager = _manager;
+		const auto my = _id;
 		crl::on_main(manager, [=] {
 			manager->clearNotification(my);
 		});
-		LOG(("Native Notification Error: %1").arg(error->message));
-		g_error_free(error);
 	}
 }
 
+void NotificationData::notificationShown(
+		const Glib::RefPtr<Gio::AsyncResult> &result) {
+	try {
+		auto reply = _dbusConnection->call_finish(result);
+		_notificationId = base::Platform::GlibVariantCast<uint>(
+			reply.get_child(0));
+
+		return;
+	} catch (const Glib::Error &e) {
+		LOG(("Native Notification Error: %1").arg(
+			QString::fromStdString(e.what())));
+	} catch (const std::exception &e) {
+		LOG(("Native Notification Error: %1").arg(
+			QString::fromStdString(e.what())));
+	}
+
+	const auto manager = _manager;
+	const auto my = _id;
+	crl::on_main(manager, [=] {
+		manager->clearNotification(my);
+	});
+}
+
 void NotificationData::close() {
-	g_dbus_connection_call(
-		_dbusConnection,
-		kService.utf8().constData(),
-		kObjectPath.utf8().constData(),
-		kInterface.utf8().constData(),
-		"CloseNotification",
-		g_variant_new("(u)", _notificationId),
-		nullptr,
-		G_DBUS_CALL_FLAGS_NONE,
-		-1,
-		nullptr,
-		nullptr,
-		nullptr);
+	try {
+		_dbusConnection->call(
+			std::string(kObjectPath),
+			std::string(kInterface),
+			"CloseNotification",
+			base::Platform::MakeGlibVariant(std::tuple{
+				_notificationId,
+			}),
+			{},
+			std::string(kService));
+	} catch (const Glib::Error &e) {
+		LOG(("Native Notification Error: %1").arg(
+			QString::fromStdString(e.what())));
+	}
 }
 
 void NotificationData::setImage(const QString &imagePath) {
-	if (_imageKey.isEmpty()) {
+	if (_imageKey.empty()) {
 		return;
 	}
 
-	_image = QImage(imagePath).convertToFormat(QImage::Format_RGBA8888);
+	const auto image = QImage(imagePath)
+		.convertToFormat(QImage::Format_RGBA8888);
 
-	_hints.emplace(_imageKey, g_variant_new(
-		"(iiibii@ay)",
-		_image.width(),
-		_image.height(),
-		_image.bytesPerLine(),
+	_hints[_imageKey] = base::Platform::MakeGlibVariant(std::tuple{
+		image.width(),
+		image.height(),
+		image.bytesPerLine(),
 		true,
 		8,
 		4,
-		g_variant_new_from_data(
-			G_VARIANT_TYPE("ay"),
-			_image.constBits(),
-			_image.sizeInBytes(),
-			true,
-			nullptr,
-			nullptr)));
+		std::vector<uchar>(
+			image.constBits(),
+			image.constBits() + image.sizeInBytes()),
+	});
 }
 
 void NotificationData::signalEmitted(
-		GDBusConnection *connection,
-		const gchar *sender_name,
-		const gchar *object_path,
-		const gchar *interface_name,
-		const gchar *signal_name,
-		GVariant *parameters,
-		gpointer user_data) {
-	const auto notificationData = reinterpret_cast<NotificationData*>(
-		user_data);
+		const Glib::RefPtr<Gio::DBus::Connection> &connection,
+		const Glib::ustring &sender_name,
+		const Glib::ustring &object_path,
+		const Glib::ustring &interface_name,
+		const Glib::ustring &signal_name,
+		const Glib::VariantContainerBase &parameters) {
+	try {
+		auto parametersCopy = parameters;
 
-	if (!notificationData) {
-		return;
-	}
+		if (signal_name == "ActionInvoked") {
+			const auto id = base::Platform::GlibVariantCast<uint>(
+				parametersCopy.get_child(0));
 
-	if(signal_name == qstr("ActionInvoked")) {
-		guint32 id;
-		gchar *actionName;
-		g_variant_get(parameters, "(us)", &id, &actionName);
-		notificationData->actionInvoked(id, actionName);
-		g_free(actionName);
-	}
+			const auto actionName = base::Platform::GlibVariantCast<
+				Glib::ustring>(parametersCopy.get_child(1));
 
-	if(signal_name == qstr("NotificationReplied")) {
-		guint32 id;
-		gchar *text;
-		g_variant_get(parameters, "(us)", &id, &text);
-		notificationData->notificationReplied(id, text);
-		g_free(text);
-	}
+			actionInvoked(id, actionName);
+		} else if (signal_name == "NotificationReplied") {
+			const auto id = base::Platform::GlibVariantCast<uint>(
+				parametersCopy.get_child(0));
 
-	if(signal_name == qstr("NotificationClosed")) {
-		guint32 id;
-		guint32 reason;
-		g_variant_get(parameters, "(uu)", &id, &reason);
-		notificationData->notificationClosed(id, reason);
+			const auto text = base::Platform::GlibVariantCast<Glib::ustring>(
+				parametersCopy.get_child(1));
+
+			notificationReplied(id, text);
+		} else if (signal_name == "NotificationClosed") {
+			const auto id = base::Platform::GlibVariantCast<uint>(
+				parametersCopy.get_child(0));
+
+			const auto reason = base::Platform::GlibVariantCast<uint>(
+				parametersCopy.get_child(1));
+
+			notificationClosed(id, reason);
+		}
+	} catch (const std::exception &e) {
+		LOG(("Native Notification Error: %1").arg(
+			QString::fromStdString(e.what())));
 	}
 }
 
@@ -645,19 +580,21 @@ void NotificationData::notificationClosed(uint id, uint reason) {
 	}
 }
 
-void NotificationData::actionInvoked(uint id, const QString &actionName) {
+void NotificationData::actionInvoked(
+		uint id,
+		const Glib::ustring &actionName) {
 	if (id != _notificationId) {
 		return;
 	}
 
-	if (actionName == qsl("default")
-		|| actionName == qsl("mail-reply-sender")) {
+	if (actionName == "default"
+		|| actionName == "mail-reply-sender") {
 		const auto manager = _manager;
 		const auto my = _id;
 		crl::on_main(manager, [=] {
 			manager->notificationActivated(my);
 		});
-	} else if (actionName == qsl("mail-mark-read")) {
+	} else if (actionName == "mail-mark-read") {
 		const auto manager = _manager;
 		const auto my = _id;
 		crl::on_main(manager, [=] {
@@ -666,12 +603,16 @@ void NotificationData::actionInvoked(uint id, const QString &actionName) {
 	}
 }
 
-void NotificationData::notificationReplied(uint id, const QString &text) {
+void NotificationData::notificationReplied(
+		uint id,
+		const Glib::ustring &text) {
 	if (id == _notificationId) {
 		const auto manager = _manager;
 		const auto my = _id;
 		crl::on_main(manager, [=] {
-			manager->notificationReplied(my, { text, {} });
+			manager->notificationReplied(
+				my,
+				{ QString::fromStdString(text), {} });
 		});
 	}
 }
diff --git a/Telegram/SourceFiles/platform/linux/specific_linux.cpp b/Telegram/SourceFiles/platform/linux/specific_linux.cpp
index 4b1e3fd55..71cc11dd9 100644
--- a/Telegram/SourceFiles/platform/linux/specific_linux.cpp
+++ b/Telegram/SourceFiles/platform/linux/specific_linux.cpp
@@ -23,6 +23,10 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "core/update_checker.h"
 #include "window/window_controller.h"
 
+#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+#include "base/platform/linux/base_linux_dbus_utilities.h"
+#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
+
 #ifndef DESKTOP_APP_DISABLE_X11_INTEGRATION
 #include "base/platform/linux/base_linux_xcb_utilities.h"
 #endif // !DESKTOP_APP_DISABLE_X11_INTEGRATION
@@ -41,19 +45,15 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 #include <QtDBus/QDBusInterface>
 #include <QtDBus/QDBusConnection>
-#include <QtDBus/QDBusConnectionInterface>
 #include <QtDBus/QDBusMessage>
 #include <QtDBus/QDBusReply>
 #include <QtDBus/QDBusError>
 #endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 
 #include <glib.h>
-
-extern "C" {
-#undef signals
 #include <gio/gio.h>
-#define signals public
-} // extern "C"
+#include <glibmm.h>
+#include <giomm.h>
 
 #include <sys/stat.h>
 #include <sys/types.h>
@@ -83,31 +83,6 @@ constexpr auto kPropertiesInterface = "org.freedesktop.DBus.Properties"_cs;
 #ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
 std::unique_ptr<internal::NotificationServiceWatcher> NSWInstance;
 
-QStringList ListDBusActivatableNames() {
-	static const auto Result = [&] {
-		const auto message = QDBusMessage::createMethodCall(
-			qsl("org.freedesktop.DBus"),
-			qsl("/org/freedesktop/DBus"),
-			qsl("org.freedesktop.DBus"),
-			qsl("ListActivatableNames"));
-
-		const QDBusReply<QStringList> reply = QDBusConnection::sessionBus()
-			.call(message);
-
-		if (reply.isValid()) {
-			return reply.value();
-		} else if (reply.error().type() != QDBusError::Disconnected) {
-			LOG(("ListActivatableNames Error: %1: %2")
-				.arg(reply.error().name())
-				.arg(reply.error().message()));
-		}
-
-		return QStringList{};
-	}();
-
-	return Result;
-}
-
 void PortalAutostart(bool start, bool silent = false) {
 	if (cExeName().isEmpty()) {
 		return;
@@ -177,17 +152,23 @@ bool IsXDGDesktopPortalKDEPresent() {
 
 bool IsIBusPortalPresent() {
 	static const auto Result = [&] {
-		const auto interface = QDBusConnection::sessionBus().interface();
-		const auto activatableNames = ListDBusActivatableNames();
+		try {
+			const auto connection = Gio::DBus::Connection::get_sync(
+				Gio::DBus::BusType::BUS_TYPE_SESSION);
 
-		const auto serviceRegistered = interface
-			&& interface->isServiceRegistered(
-				qsl("org.freedesktop.portal.IBus"));
+			const auto serviceRegistered = base::Platform::DBus::NameHasOwner(
+				connection,
+				"org.freedesktop.portal.IBus");
 
-		const auto serviceActivatable = activatableNames.contains(
-			qsl("org.freedesktop.portal.IBus"));
+			const auto serviceActivatable = ranges::contains(
+				base::Platform::DBus::ListActivatableNames(connection),
+				"org.freedesktop.portal.IBus");
 
-		return serviceRegistered || serviceActivatable;
+			return serviceRegistered || serviceActivatable;
+		} catch (...) {
+		}
+
+		return false;
 	}();
 
 	return Result;
@@ -443,17 +424,6 @@ bool CanOpenDirectoryWithPortal() {
 	return false;
 }
 
-bool IsNotificationServiceActivatable() {
-#ifndef DESKTOP_APP_DISABLE_DBUS_INTEGRATION
-	static const auto Result = ListDBusActivatableNames().contains(
-		qsl("org.freedesktop.Notifications"));
-
-	return Result;
-#endif // !DESKTOP_APP_DISABLE_DBUS_INTEGRATION
-
-	return false;
-}
-
 QString AppRuntimeDirectory() {
 	static const auto Result = [&] {
 		auto runtimeDir = QStandardPaths::writableLocation(
@@ -598,8 +568,7 @@ void psActivateProcess(uint64 pid) {
 namespace {
 
 QString GetHomeDir() {
-	const auto home = QString(g_get_home_dir());
-
+	const auto home = QString::fromStdString(Glib::get_home_dir());
 	if (!home.isEmpty() && !home.endsWith('/')) {
 		return home + '/';
 	}
@@ -682,6 +651,9 @@ void start() {
 	qputenv("PULSE_PROP_application.name", AppName.utf8());
 	qputenv("PULSE_PROP_application.icon_name", GetIconName().toLatin1());
 
+	Glib::init();
+	Gio::init();
+
 	if (const auto integration = BaseGtkIntegration::Instance()) {
 		integration->prepareEnvironment();
 	} else {
@@ -775,75 +747,65 @@ void InstallLauncher(bool force) {
 }
 
 void RegisterCustomScheme(bool force) {
-	if (cExeName().isEmpty()) {
-		return;
-	}
-
-	GError *error = nullptr;
-
-	const auto neededCommandlineBuilder = qsl("%1 -workdir %2 --").arg(
-		QString(EscapeShell(QFile::encodeName(cExeDir() + cExeName()))),
-		QString(EscapeShell(QFile::encodeName(cWorkingDir()))));
-
-	const auto neededCommandline = qsl("%1 %u")
-		.arg(neededCommandlineBuilder);
-
-	auto currentAppInfo = g_app_info_get_default_for_type(
-		kHandlerTypeName.utf8().constData(),
-		true);
-
-	if (currentAppInfo) {
-		const auto currentCommandline = QString(
-			g_app_info_get_commandline(currentAppInfo));
-
-		g_object_unref(currentAppInfo);
-
-		if (currentCommandline == neededCommandline) {
+	try {
+		if (cExeName().isEmpty()) {
 			return;
 		}
-	}
 
-	auto registeredAppInfoList = g_app_info_get_recommended_for_type(
-		kHandlerTypeName.utf8().constData());
+		const auto neededCommandlineBuilder = qsl("%1 -workdir %2 --").arg(
+			QString(EscapeShell(QFile::encodeName(cExeDir() + cExeName()))),
+			QString(EscapeShell(QFile::encodeName(cWorkingDir()))));
 
-	for (auto l = registeredAppInfoList; l != nullptr; l = l->next) {
-		const auto currentRegisteredAppInfo = reinterpret_cast<GAppInfo*>(
-			l->data);
+		const auto neededCommandline = qsl("%1 %u")
+			.arg(neededCommandlineBuilder);
 
-		const auto currentAppInfoId = QString(
-			g_app_info_get_id(currentRegisteredAppInfo));
+		const auto currentAppInfo = Gio::AppInfo::get_default_for_type(
+			std::string(kHandlerTypeName),
+			true);
 
-		const auto currentCommandline = QString(
-			g_app_info_get_commandline(currentRegisteredAppInfo));
+		if (currentAppInfo) {
+			const auto currentCommandline = QString::fromStdString(
+				currentAppInfo->get_commandline());
 
-		if (currentCommandline == neededCommandline
-			&& currentAppInfoId.startsWith(qsl("userapp-"))) {
-			g_app_info_delete(currentRegisteredAppInfo);
+			if (currentCommandline == neededCommandline) {
+				return;
+			}
 		}
-	}
 
-	if (registeredAppInfoList) {
-		g_list_free_full(registeredAppInfoList, g_object_unref);
-	}
+		auto registeredAppInfoList = g_app_info_get_recommended_for_type(
+			kHandlerTypeName.utf8().constData());
 
-	auto newAppInfo = g_app_info_create_from_commandline(
-		neededCommandlineBuilder.toUtf8().constData(),
-		AppName.utf8().constData(),
-		G_APP_INFO_CREATE_SUPPORTS_URIS,
-		&error);
+		for (auto l = registeredAppInfoList; l != nullptr; l = l->next) {
+			const auto currentRegisteredAppInfo = reinterpret_cast<GAppInfo*>(
+				l->data);
 
-	if (newAppInfo) {
-		g_app_info_set_as_default_for_type(
-			newAppInfo,
-			kHandlerTypeName.utf8().constData(),
-			&error);
+			const auto currentAppInfoId = QString(
+				g_app_info_get_id(currentRegisteredAppInfo));
 
-		g_object_unref(newAppInfo);
-	}
+			const auto currentCommandline = QString(
+				g_app_info_get_commandline(currentRegisteredAppInfo));
 
-	if (error) {
-		LOG(("App Error: %1").arg(error->message));
-		g_error_free(error);
+			if (currentCommandline == neededCommandline
+				&& currentAppInfoId.startsWith(qsl("userapp-"))) {
+				g_app_info_delete(currentRegisteredAppInfo);
+			}
+		}
+
+		if (registeredAppInfoList) {
+			g_list_free_full(registeredAppInfoList, g_object_unref);
+		}
+
+		const auto newAppInfo = Gio::AppInfo::create_from_commandline(
+			neededCommandlineBuilder.toStdString(),
+			std::string(AppName),
+			Gio::AppInfoCreateFlags::APP_INFO_CREATE_SUPPORTS_URIS);
+
+		if (newAppInfo) {
+			newAppInfo->set_as_default_for_type(
+				std::string(kHandlerTypeName));
+		}
+	} catch (const Glib::Error &e) {
+		LOG(("App Error: %1").arg(QString::fromStdString(e.what())));
 	}
 }
 
diff --git a/Telegram/SourceFiles/platform/linux/specific_linux.h b/Telegram/SourceFiles/platform/linux/specific_linux.h
index 529adb597..38e1b4c33 100644
--- a/Telegram/SourceFiles/platform/linux/specific_linux.h
+++ b/Telegram/SourceFiles/platform/linux/specific_linux.h
@@ -20,7 +20,6 @@ bool InSnap();
 bool AreQtPluginsBundled();
 bool UseXDGDesktopPortal();
 bool CanOpenDirectoryWithPortal();
-bool IsNotificationServiceActivatable();
 
 QString AppRuntimeDirectory();
 QString GetLauncherBasename();
diff --git a/Telegram/ThirdParty/fcitx-qt5 b/Telegram/ThirdParty/fcitx-qt5
index f95f76d63..77cb995a1 160000
--- a/Telegram/ThirdParty/fcitx-qt5
+++ b/Telegram/ThirdParty/fcitx-qt5
@@ -1 +1 @@
-Subproject commit f95f76d637990f66f056eb099d46e3b5e6e7366f
+Subproject commit 77cb995a1ed0c30401e43388842b99610b53569e
diff --git a/Telegram/ThirdParty/fcitx5-qt b/Telegram/ThirdParty/fcitx5-qt
index 47628ac9f..8543204b9 160000
--- a/Telegram/ThirdParty/fcitx5-qt
+++ b/Telegram/ThirdParty/fcitx5-qt
@@ -1 +1 @@
-Subproject commit 47628ac9f81b589d8e69f82b121d08773b06e813
+Subproject commit 8543204b9a3792e0dbd4163ee9420e896f4f49d8
diff --git a/Telegram/ThirdParty/qt5ct b/Telegram/ThirdParty/qt5ct
index 59be9d1d9..9f60cd235 160000
--- a/Telegram/ThirdParty/qt5ct
+++ b/Telegram/ThirdParty/qt5ct
@@ -1 +1 @@
-Subproject commit 59be9d1d995348687702a18ce3d653c07389cfa2
+Subproject commit 9f60cd2352a4dcc55c8ca267f29bd8fff5c6a659
diff --git a/Telegram/build/docker/centos_env/Dockerfile b/Telegram/build/docker/centos_env/Dockerfile
index f649c9b96..e0aed8658 100644
--- a/Telegram/build/docker/centos_env/Dockerfile
+++ b/Telegram/build/docker/centos_env/Dockerfile
@@ -458,6 +458,52 @@ RUN DESTDIR="$LibrariesPath/xkbcommon-cache" meson install -C build
 WORKDIR ..
 RUN rm -rf libxkbcommon
 
+FROM builder AS mm-common
+RUN git clone -b 1.0.2 --depth=1 $GIT/GNOME/mm-common.git
+
+WORKDIR mm-common
+RUN NOCONFIGURE=1 ./autogen.sh
+RUN ./configure --enable-network
+RUN make -j$(nproc)
+RUN make DESTDIR="$LibrariesPath/mm-common-cache" install
+
+WORKDIR ..
+RUN rm -rf mm-common
+
+FROM builder AS libsigcplusplus
+COPY --from=mm-common ${LibrariesPath}/mm-common-cache /
+
+RUN git clone -b 2.10.6 --depth=1 $GIT/libsigcplusplus/libsigcplusplus.git
+
+WORKDIR libsigcplusplus
+ENV ACLOCAL_PATH="/usr/local/share/aclocal"
+RUN NOCONFIGURE=1 ./autogen.sh
+RUN ./configure --enable-maintainer-mode --enable-static --disable-documentation
+RUN make -j$(nproc)
+RUN make DESTDIR="$LibrariesPath/libsigcplusplus-cache" install
+
+WORKDIR ..
+RUN rm -rf libsigcplusplus
+
+FROM patches AS glibmm
+COPY --from=mm-common ${LibrariesPath}/mm-common-cache /
+COPY --from=libsigcplusplus ${LibrariesPath}/libsigcplusplus-cache /
+RUN yum -y install perl-XML-Parser
+
+# equals to glib version of Ubuntu 14.04
+RUN git clone -b 2.40.0 --depth=1 $GIT/GNOME/glibmm.git
+
+WORKDIR glibmm
+RUN git apply ../patches/glibmm.patch
+ENV ACLOCAL_PATH="/usr/local/share/aclocal"
+RUN NOCONFIGURE=1 ./autogen.sh
+RUN ./configure --enable-maintainer-mode --enable-static --disable-documentation
+RUN make -j$(nproc)
+RUN make DESTDIR="$LibrariesPath/glibmm-cache" install
+
+WORKDIR ..
+RUN rm -rf glibmm
+
 FROM patches AS qt
 
 COPY --from=libffi ${LibrariesPath}/libffi-cache /
@@ -636,6 +682,8 @@ COPY --from=ffmpeg ${LibrariesPath}/ffmpeg-cache /
 COPY --from=openal ${LibrariesPath}/openal-cache /
 COPY --from=openssl ${LibrariesPath}/openssl-cache /
 COPY --from=xkbcommon ${LibrariesPath}/xkbcommon-cache /
+COPY --from=libsigcplusplus ${LibrariesPath}/libsigcplusplus-cache /
+COPY --from=glibmm ${LibrariesPath}/glibmm-cache /
 COPY --from=qt ${LibrariesPath}/qt-cache /
 COPY --from=kwayland ${LibrariesPath}/kwayland-cache /
 COPY --from=breakpad ${LibrariesPath}/breakpad breakpad
diff --git a/Telegram/lib_base b/Telegram/lib_base
index 9005da2a2..06e0afae8 160000
--- a/Telegram/lib_base
+++ b/Telegram/lib_base
@@ -1 +1 @@
-Subproject commit 9005da2a22740668fc3f16597ca08dffbc4b008b
+Subproject commit 06e0afae84d45a8c4587329d56b7c5754190dc97
diff --git a/Telegram/lib_ui b/Telegram/lib_ui
index db65fca0a..af41bff7e 160000
--- a/Telegram/lib_ui
+++ b/Telegram/lib_ui
@@ -1 +1 @@
-Subproject commit db65fca0aa6f0e1225d45a0a6eeecfafdab5cce0
+Subproject commit af41bff7e49e2018a905755d8dea60d2d1f7b8f3
diff --git a/cmake b/cmake
index ac193a597..2f4cbdd12 160000
--- a/cmake
+++ b/cmake
@@ -1 +1 @@
-Subproject commit ac193a597d6b953f9869a240e21e275ce6e388cb
+Subproject commit 2f4cbdd1263ad350776413633bb01e8122147274
diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index b0c7b1ae7..cd4a4d385 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -75,6 +75,7 @@ parts:
       - python
       - libasound2-dev
       - libglib2.0-dev
+      - libglibmm-2.4-dev
       - libgtk-3-dev
       - liblzma-dev
       - libopus-dev
@@ -88,6 +89,7 @@ parts:
     stage-packages:
       - libasound2
       - libglib2.0-0
+      - libglibmm-2.4-1v5
       - libgtk-3-0
       - liblzma5
       - libopus0