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USB keyboard not responsive

From: Thomas Pfundt
Subject: USB keyboard not responsive
Date: Sun, 12 Jun 2022 13:08:48 +0000

Hi everyone,

I have some trouble getting my USB keyboard to work in GRUB2 made from the 
coreboot build system.

The image does appear to compile correctly, but only PS/2 input seems to be 
working. When I try to use a USB keyboard, it won't respond. I can replug it 
while GRUB is running and sometimes input will be registered, but only very 

I included the 'usb_keyboard' module and it's also called via 'insmod 
usb_keyboard' in the included config, which appears to be loaded, but still it 
does nothing.

Is there anything else I could try or might have missed?

Kind regards!

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