As mentioned in https://bugs.launchpad.net/ubuntu/focal/+source/linux- firmware/+bug/1958283:
I am able to fix the problem temporarily with a downgrade: sudo apt install linux-firmware=1.187 After a reboot, I no longer have any graphics errors. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1958343 Title: Internal monitor of AMD based laptop not working after update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1958343/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs