@fossfreedom Well, in fact the ubuntu-release-upgrader is doing just the the opposite that you want...
In hirsute I was using "vc4-fkms-v3d" so I didn't suffer this problem. But during the upgrade to impish my config.txt file was automatically changed from this: dtoverlay=vc4-fkms-v3d To # changed by do-release-upgrade (LP: #1923673) dtoverlay=vc4-kms-v3d This is the related bug: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1923673 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1946368 Title: HDMI output freezes under current/proposed impish kernels To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1946368/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
