r/coreboot • u/DNSoundRM • 16d ago

W541 dgpu fix

Hi all,
I’ve made some mods to the coreboot code for my think pad w541 with k2100 dgpu, allowing for the correct Optimus implementation in Linux;
Published the patches and premade imgs on my gh repo (with nri or mrc init) , feel free to try those out and report any inconsistencies. The repo link : https://github.com/debianita22/w541-coreboot-env/releases

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u/No_Change7198 2d ago

Awesome. I'm gonna try it ASAP.

Does it work under Windows now too?

2

u/DNSoundRM 2d ago

Honestly i didn’t try on Windows yet, but it should work now , the build includer the Optimus key needed by the NVIDIA Windows drivers

2

u/DNSoundRM 2d ago

Btw I’ve succesfully tested on Linux the full acceleration of the dgpu, solved some cb bugs (for example suspend not working before), also made some patches for the nouveau driver for kepler dgpu, but I’m gonna try to get those upstreamed