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authorNicholas Chin <nic.c3.14@gmail.com>2023-04-19 22:15:06 -0600
committerNicholas Chin <nic.c3.14@gmail.com>2023-04-19 22:15:06 -0600
commit1497ae045104145de677fd151da4de6e92be4e5a (patch)
tree21d155eb6b284eb343c8a37a41400f14c3359f33 /blobs/t440p/ifd.bin
parenteb32e4932738cb2901a5118c9e511c0191382388 (diff)
Fix GRUB handling of the E6400 keyboard
This introduces a patch to grub which disables the coreboot specific handling, allowing PS/2 keyboards to be handled the same as i386-pc. However this alone breaks the keyboard in Linux, requiring coreboot to perform PS/2 initialization. I think GRUB may be restoring the original configuration of the PS/2 controller once it exits, and if coreboot doesn't initialize the controller then it's restored to the default state which Linux doesn't seem to like. I think the emulated keyboard interface provided by the EC on the E6400 behaves in a non-standard way that is incompatible with the old coreboot specific handling.
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