https://bugs.freedesktop.org/show_bug.cgi?id=92258
--- Comment #49 from russianneuromancer@ya.ru --- By the way, seems like issue is much easier to reproduce with Steam desktop notifications. Try to download something small, and it will show "download completed" notification, or ask someone to send message to you via integrated chat. From my latest three freezes I see that few (usually two-three) notifications should be enough to reproduce this freeze.