I'm also experiencing intermittent crashes of the window manager - either gnome-shell or gdm3, not 100% sure. What I am sure of is that I'm getting forcibly logged out.
I just experienced a crash when discussion this issue in matrix chat. There were a few things going on at the time. I did have steam and starcraft 2 open (running through steam's experimental proton). But that was in the background. In the foreground I was just moving a gvim window that had journalctl logs in it that I was going to copy into my chrome browser. I'm attaching the journalctl logs from that crash here as well, as perhaps these issues are related. ** Attachment added: "journalctl-gdm-crash-logs2.log" https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2064037/+attachment/5772122/+files/journalctl-gdm-crash-logs2.log -- You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is subscribed to gdm3 in Ubuntu. https://bugs.launchpad.net/bugs/2064037 Title: GDM session crashes after returning from a screen-off. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gdm3/+bug/2064037/+subscriptions -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs
