I have the same problem with eboard 1.1.3 on Debian Buster. The program build is quite old (2016), hence it seems that the problem is with some high-level library.
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gtk+2.0 in Ubuntu. https://bugs.launchpad.net/bugs/1808710 Title: !xcb_xlib_threads_sequence_lost error with GTK2 applications Status in gtk+2.0 package in Ubuntu: Confirmed Bug description: GTK2 applications randomly crash or freeze with error like: [xcb] Unknown sequence number while processing queue [xcb] Most likely this is a multi-threaded client and XInitThreads has not been called [xcb] Aborting, sorry about that. <application>: ../../src/xcb_io.c:263: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost' failed. where <application> is the name of the executable, e.g. audacious, soffice.bin, etc. RELATED BUGS LibreOffice: https://bugs.launchpad.net/ubuntu/+source/libreoffice/+bug/1801161 PCManFM: https://bugs.launchpad.net/ubuntu/+source/pcmanfm/+bug/1782984 Audacious: https://redmine.audacious-media-player.org/issues/798 FreeCAD: https://bugs.launchpad.net/ubuntu/+source/freecad/+bug/1754084 ClawsMail: https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4203 OTHER APPLICATIONS SpaceFM, Pidgin, GPicView and GIMP appear to have similar problems. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+2.0/+bug/1808710/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
