I ran into the same problem, and found the solution. Initially in grub2 the configuration is set to GRUB_GFXMODE=auto. On several systems grub seems to be unable to autodetect the proper resolution. (In grub console "videoinfo" returned no (!) output on my system.) After altering to GRUB_GFXMODE=1280x800 which is the known resolution of my screen, yours may differ of course, my lovely bootmenu (don't forget to run update-grub after altering the config file) was visible again.
Formerly grub's default configuration seemed to be GRUB_TERMINAL= console, which now has been commented out. That leads to a nice output (as grub themes are supported) if it works. If not, it leads into the dark... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1863434 Title: 20.04 grub menu not visible To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1863434/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
