This seems like an issue with NVIDIA's legacy BIOS VESA ROM. Perhaps try UEFI boot, which is likely less buggy on modern VGA cards.
I doubt we will be able to do much unless someone with affected hardware can submit a patch. ** Changed in: grub2 (Ubuntu) Status: Confirmed => Won't Fix -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1853735 Title: grub2 fails to load with DP1.2 (but not DP1.1) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1853735/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs