I see a similar behaviour on my EFI system with BTRFS root on bionic, which recently upgraded to:
grub-common/bionic-updates,now 2.02-2ubuntu8.10 amd64 GRUB_TIMEOUT is overridden to be 30 seconds. GRUB_TIMEOUT_STYLE=hidden is also overridden. Workaround for the timeout in /etc/default/grub: GRUB_RECORDFAIL_TIMEOUT=$GRUB_TIMEOUT -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1800722 Title: EFI booting + /boot on LVM == inaccessible boot menu To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1800722/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
