** Changed in: mutter (Ubuntu Focal)
Status: Triaged => In Progress
--
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to mutter 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 Mutter:
Unknown
Status in mutter package in Ubuntu:
In Progress
Status in mutter source package in Focal:
In Progress
Status in mutter source package in Groovy:
In Progress
Bug description:
[Impact]
This is the #1 crasher of gnome-shell in Ubuntu 20.04, though it's
duplicated across multiple problem reports according to locale:
https://errors.ubuntu.com/problem/4de3d315d9df1c9699bda54beafeeeea8d52053c
https://errors.ubuntu.com/problem/2251b638f7a6167772f922dc5916740522c5c22b
https://errors.ubuntu.com/problem/943838b8a80c1da4f8df584b7d2ad3a13361fdd7
https://errors.ubuntu.com/problem/4b78bc9730e8681f0c42fc2ecea14d03544394f0
[Test Case]
None known. The plan is to just continue monitoring crash reports.
Still, we are confident this is the fix because:
* The offending source code in libx11 tells us it is :) and
* The crash only started in Ubuntu with gnome-shell 3.34, which is the
exact release in which XInitThreads was removed from mutter.
[Regression Potential]
Low. We add a single function call that tells libX11 to enable thread
safety. This same function call as one we had in bionic, cosmic and
disco.
To manage notifications about this bug go to:
https://bugs.launchpad.net/mutter/+bug/1877075/+subscriptions
--
Mailing list: https://launchpad.net/~desktop-packages
Post to : [email protected]
Unsubscribe : https://launchpad.net/~desktop-packages
More help : https://help.launchpad.net/ListHelp
