After a recent upgrade it reliably crashes on startup for me too:
Thread 1 "telegram-deskto" received signal SIGSEGV, Segmentation fault.
0xec26159f in gdk_display_open () from /lib/i386-linux-gnu/libgdk-x11-2.0.so.0
(gdb) where
#0 0xec26159f in gdk_display_open ()
at /lib/i386-linux-gnu/libgdk-x11-2.0.so.0
#1 0xec22f3b9 in gdk_display_open_default_libgtk_only ()
at /lib/i386-linux-gnu/libgdk-x11-2.0.so.0
#2 0xec3f9748 in gtk_init_check () at /lib/i386-linux-gnu/libgtk-x11-2.0.so.0
#3 0x56a68690 in ()
#4 0x56a6cd5e in Platform::Libs::start() ()
#5 0x56a6ce54 in Platform::ThirdParty::start() ()
#6 0x5692f166 in ThirdParty::start() ()
#7 0x56d91ad2 in Messenger::Messenger() ()
#8 0x56f23e3a in Application::createMessenger() ()
#9 0x56f24209 in Sandbox::launch() ()
#10 0x56f243c7 in Application::singleInstanceChecked() ()
#11 0x56f2461b in Application::socketError(QLocalSocket::LocalSocketError) ()
#12 0x56ec09ce in ()
#13 0xf53a936e in QMetaObject::activate(QObject*, int, int, void**) ()
at /lib/i386-linux-gnu/sse2/libQt5Core.so.5
#14 0xf53a99dd in QMetaObject::activate(QObject*, QMetaObject const*, int,
void**) () at /lib/i386-linux-gnu/sse2/libQt5Core.so.5
#15 0xf642e4a1 in QLocalSocket::error(QLocalSocket::LocalSocketError) ()
at /lib/i386-linux-gnu/libQt5Network.so.5
#16 0xf643081f in () at /lib/i386-linux-gnu/libQt5Network.so.5
#17 0xf643127f in () at /lib/i386-linux-gnu/libQt5Network.so.5
#18 0xf64314dc in
QLocalSocket::connectToServer(QFlags<QIODevice::OpenModeFlag>) () at
/lib/i386-linux-gnu/libQt5Network.so.5
#19 0xf642e97a in QLocalSocket::connectToServer(QString const&,
QFlags<QIODevice::OpenModeFlag>) () at /lib/i386-linux-gnu/libQt5Network.so.5
#20 0x56f24c18 in Application::Application(int&, char**) ()
#21 0x56769e0e in main ()
(gdb)-- ciao, Marco
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