Screen glitching problem with 20.04

7

I have the exact same problem, with the i915 also. If you are interested, the bug report is here:
https://bugs.launchpad.net/ubuntu/+source/mutter/+bug/1896627

Unfortunately, I don’t know why the issue still persists when you try the intel driver / tearfree option. I was lucky enough that it fixed it for me. Here is the exact contents of /usr/share/X11/xorg.conf.d/20-intel.conf on my system:

Section "Device"
    Identifier "Intel Graphics"
    Driver "intel"
    Option "TearFree" "true"
    Option "AccelMethod" "SNA"
EndSection