I have had the same problem in Linux Mint 21. Workaround of uncommenting GRUB_TERMINAL=console in /etc/default/grub worked for me.
It seems from the above comments that this has been an issue for some time and it is not being looked into by the developers. They surely underestimate the degree of frustration it can cause.
I have had the same problem in Linux Mint 21. Workaround of uncommenting GRUB_TERMINAL= console in /etc/default/grub worked for me.
It seems from the above comments that this has been an issue for some time and it is not being looked into by the developers. They surely underestimate the degree of frustration it can cause.