I have an Asus P5Q-E motherboard and a Razer Tarantula USB-keyboard. The keyboard is working fine on Ubuntu, but it doesn't work on BIOS or GRUB. I must plug a PS/2 keyboard to use these.
So this problem is not related to Ubuntu, but my motherboard. My old motherboard did work on BIOS with this keyboard. I have also tried enabling legacy USB etc from the BIOS with no luck.
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