Thanks for the bug report.
Your log shows evidence of bug 1949352 but that probably doesn't explain "session crashes".
The most common GDM crash we are seeing in 21.10 is bug 1945061. But to confirm exactly which crash you are experiencing here, please follow these instructions: https://wiki.ubuntu.com/Bugs/Responses#Missing_a_crash_report_or_having_a_.crash_attachment
Thanks for the bug report.
Your log shows evidence of bug 1949352 but that probably doesn't explain "session crashes".
The most common GDM crash we are seeing in 21.10 is bug 1945061. But to confirm exactly which crash you are experiencing here, please follow these instructions: https:/ /wiki.ubuntu. com/Bugs/ Responses# Missing_ a_crash_ report_ or_having_ a_.crash_ attachment