Using 256MB for CMA seems problematic for the armhf kernel. A work- around is to lower it like so:
dtoverlay=vc4-kms-v3d,cma-64 ** Changed in: linux-raspi (Ubuntu Focal) Status: Confirmed => Triaged -- 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