Hello Tobias,
You can switch between GPUs by changing the value of the hybrid_graphics_mode CMOS setting using nvramcui or nvramtool. Currently, for the T430 this field can be set to either Integrated only or Dedicated only. Make sure you are using CMOS for configuration values. Unfortunately, I was unable to switch the power for the dGPU off at all, which resulted in rather high power consumption even if only the integrated GPU is enabled.
Regards, Micha? Kope?
Hello,
thanks for the feedback. What version of Coreboot did you use? Is the stable 4.7 enough or should I use a snapshot from the git-repository? Also the question how to include the VGA-bios for the NVidia-card. I did a compilation with the VGA-bios for Intel and included the rom afterwards with cbfstool. Is this the correct way to do as "optional rom"?
Thanks!
Regards, Tobias.