Today I ran a routine "apt upgrade", and it upgraded several GRUB-related packages. I am using GRUB 2.02 on Ubuntu 18.04 LTS.
After this, the GRUB menu appears on every boot with a 30 second timeout.
Previously, the GRUB menu was hidden.
Any ideas as to what might cause this? My /etc/default/grub is below.
# If you change this file, run 'update-grub' afterwards to update # /boot/grub/grub.cfg. # For full documentation of the options in this file, see: # info -f grub -n 'Simple configuration' GRUB_DEFAULT=0 GRUB_TIMEOUT_STYLE=hidden GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="--verbose nosplash debug" GRUB_CMDLINE_LINUX=""