@Heinrich Schuchardt (xypron) Thanks, tried both workarounds but with no success.
Didn't mention before but switching on my computer I can still get the EFI boot menu pressing F12. From there I can select any other system and set one of them as the default system at boot. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1965689 Title: Black screen instead grub menu at boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1965689/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs