Good:
- Directly boots to Ubuntu, no menu shown - Menu shown after boot failed
Bad:
- stuck in grub/does not load the kernel, but no display output - no menu shown after reboot on a failed boot (but this is not the bug for that!)
Good:
- Directly boots to Ubuntu, no menu shown
- Menu shown after boot failed
Bad:
- stuck in grub/does not load the kernel, but no display output
- no menu shown after reboot on a failed boot (but this is not the bug for that!)