I was able to confirm that if I started from a clean install of Ubuntu 20.04 I could copy the 18.04 .dtbo file per the workaround described above and get the board to boot with the usercfg.txt / dtoverlay=vc4 -kms-v3d setting in place.
I was unable to make it work on my initial install, which I had been using for about a week. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1889223 Title: vc4-kms-v3d boot failure focal armhf preinstalled server To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1889223/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
