Felix Miata wrote on 5/15/23 13:25:
Try using the (default) modesetting DIX display driver instead of Nouveau. Remove package xserver-xorg-video-nouveau and reboot to see if it makes a difference.
I did this, and when I rebooted I was in the Linux console instead of Light DM (which is my display manager). Hitting ctrl-alt-F7 to go to the X screen did not show me the LDM login screen, or any other X screen, but instead another non-graphical screen.
I reinstalled xserver-xorg-video-nouveau from the console, and (fortunately) when I rebooted LDM came up as usual and I was able to log in as I normally do. Obviously, the original issue still exists, but at least I got a graphical display back.
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