Bug#971588: grub is not responding to the keyboard

[Karsten]

Package: grub2-common
Version: 2.02+dfsg1-20+deb10u2
Severity: important

Please refer to this bug https://savannah.gnu.org/bugs/index.php?57010
and description https://askubuntu.com/questions/423036/grub-not-responding-to-keyboard

Suddenly it was not possible any more to boot any other partition, because the keyboard does not work for grub.
It is possible to enter the bios setup and to login after boot.

You need an old keyboard with RS-232 instead of an USB-keyboard to select anything in grub.