** Summary changed:

- gnome-session-check-accelerated-gl-helper crashed with SIGSEGV in 
cso_destroy_context() [r300_dri.so]
+ gnome-shell/gnome-session-check-accelerated-gl-helper crashed with SIGSEGV in 
cso_destroy_context() [r300_dri.so]

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https://bugs.launchpad.net/bugs/1915870

Title:
  gnome-shell/gnome-session-check-accelerated-gl-helper crashed with
  SIGSEGV in cso_destroy_context() [r300_dri.so]

Status in Mesa:
  Unknown
Status in mesa package in Ubuntu:
  Triaged
Status in mesa package in Fedora:
  Unknown

Bug description:
  Graphical user interface is not coming up upon start. Only SSH is
  possible.

  lsb_release -rd:

  Description:  Ubuntu 20.10
  Release:      20.10

  dmesg:

  [   11.985343] gnome-session-c[1013]: segfault at 0 ip 0000000000000000 sp 
00007fff7679ca48 error 14 in 
gnome-session-check-accelerated-gl-helper[56020e238000+2000]
  [   11.985352] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
  [   14.216117] gnome-shell[1094]: segfault at 0 ip 0000000000000000 sp 
00007ffeddff9f88 error 14
  [   14.216122] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.
  [   15.316292] gnome-shell[1109]: segfault at 0 ip 0000000000000000 sp 
00007ffc70716198 error 14
  [   15.316297] Code: Unable to access opcode bytes at RIP 0xffffffffffffffd6.

  apt-cache policy:

  gnome-session:
    Installed: (none)
    Candidate: 3.38.0-1ubuntu1
    Version table:
       3.38.0-1ubuntu1 500
          500 http://de.archive.ubuntu.com/ubuntu groovy/main amd64 Packages
          500 http://de.archive.ubuntu.com/ubuntu groovy/main i386 Packages
  gnome-session-bin:
    Installed: 3.38.0-1ubuntu1
    Candidate: 3.38.0-1ubuntu1
    Version table:
   *** 3.38.0-1ubuntu1 500
          500 http://de.archive.ubuntu.com/ubuntu groovy/main amd64 Packages
          100 /var/lib/dpkg/status
  gnome-session-common:
    Installed: 3.38.0-1ubuntu1
    Candidate: 3.38.0-1ubuntu1
    Version table:
   *** 3.38.0-1ubuntu1 500
          500 http://de.archive.ubuntu.com/ubuntu groovy/main amd64 Packages
          500 http://de.archive.ubuntu.com/ubuntu groovy/main i386 Packages
          100 /var/lib/dpkg/status

  /var/crash: see attachment

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