I should also note that we cannot read the crash file in comment #1. To have that analysed you should run:
ubuntu-bug _usr_libexec_gnome-session-check-accelerated-gl- helper.126.crash It looks like it might be one of these crashes in the Mesa r300_dri.so driver: https://errors.ubuntu.com/problem/35e91e8a26a38f12a90e6fdca6b964b9a91889bf https://errors.ubuntu.com/problem/c7097de400ef4606fa71cc05b607d4f8d126838d https://errors.ubuntu.com/problem/d92b45e827f9a2ef27ecbd3039ee0d71134404df ** Also affects: mesa (Ubuntu) Importance: Undecided Status: New ** Changed in: mesa (Ubuntu) Status: New => Incomplete ** Summary changed: - gnome session not starting + gnome session not starting (segfault with r300_dri.so) ** Bug watch added: gitlab.freedesktop.org/mesa/mesa/-/issues #3990 https://gitlab.freedesktop.org/mesa/mesa/-/issues/3990 -- 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/1915870 Title: gnome session not starting (segfault with r300_dri.so) Status in Mesa: Unknown Status in mesa package in Ubuntu: Confirmed 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 To manage notifications about this bug go to: https://bugs.launchpad.net/mesa/+bug/1915870/+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