https://bugs.freedesktop.org/show_bug.cgi?id=111813

Bug ID: 111813 Summary: Ubuntu 18.04.3 + Mesa 19.3 = Login Loop Product: Mesa Version: git Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW Severity: normal Priority: not set Component: Drivers/Gallium/radeonsi Assignee: dri-devel@lists.freedesktop.org Reporter: DirkToewe@GoogleMail.com QA Contact: dri-devel@lists.freedesktop.org

Description ----------- As of today with Oibaf's latest PPA update (19.3~git1909250730.88f909~oibaf~b), Ubuntu 18.04.3 is stuck in a login loop, i.e. after entering the password the desktop background is displayed for a second and then Gnome goes back to the login screen. According to /var/log/syslog, there are segementation faults happening when Gnome tries to access GLX.

Sep 25 09:07:58 kernel: [ 10.405287] gnome-shell[1073]: segfault at 50 ip 00007f1d58939291 sp 00007ffe73daced0 error 4 in libGLX_mesa.so.0.0.0[7f1d588f0000+73000] Sep 25 09:07:59 kernel: [ 12.097378] gnome-shell[1323]: segfault at 50 ip 00007f3c427b1291 sp 00007ffef7af4e50 error 4 in libGLX_mesa.so.0.0.0[7f3c42768000+73000]

After reverting to the official Ubuntu repositories using PPA-Purge, the login works just fine. My experience with (debugging) native binaries let alone drivers is quite limited. Please let me know what else I can do to provide more info if needed.

Hardware -------- AMD A10-7850K APU (Kaveri)