Ubuntu 18.04.3 + Mesa 19.3 = Login Loop

Submitted by Dirk Toewe

Assigned to Default DRI bug account

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)

Version: git

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