This is actually the #1 (English locale) and #3 (Portuguese?) gnome- shell crash in focal this month.
https://errors.ubuntu.com/?release=Ubuntu%2020.04&package=gnome- shell&period=month ** Summary changed: - /usr/bin/gnome-shell:gnome-shell: ../../src/xcb_io.c:260: poll_for_event: Assertiva \342\200\234!xcb_xlib_threads_sequence_lost\342\200\235 falhou. + gnome-shell crashed with at xcb_io.c:260: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost'' failed -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/1877075 Title: gnome-shell crashed at xcb_io.c:260: poll_for_event: Assertion `!xcb_xlib_threads_sequence_lost'' failed Status in gnome-shell package in Ubuntu: Confirmed Status in xorg-server package in Ubuntu: New Bug description: The Ubuntu Error Tracker has been receiving reports about a problem regarding gnome-shell. This problem was most recently seen with package version 3.36.1-5ubuntu2, the problem page at https://errors.ubuntu.com/problem/4de3d315d9df1c9699bda54beafeeeea8d52053c contains more details, including versions of packages affected, stacktrace or traceback, and individual crash reports. If you do not have access to the Ubuntu Error Tracker and are a software developer, you can request it at http://forms.canonical.com/reports/. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/1877075/+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