config MULTIPLE_VGA_ADAPTERS
bool
default n
to
config MULTIPLE_VGA_ADAPTERS
bool
default y
and completely rebuild the corebootI enabled these options for my G505S laptop with both integrated/discrete graphic, however I am not a gamer so can't notice if there is any positive effect from this option. But maybe this option will significantly improve the thread starter's eGPU experience? What do you think ?
Stefan Reinauer <stefan.reinauer@coreboot.org> writes:
> * i1w5d7gf38keg@tutanota.com <i1w5d7gf38keg@tutanota.com> [170226 21:59]:
>> Hardware: Gigabyte g41m-es2l, latest coreboot git, latest seabios git, two
>> nvidia gpu cards tested
>>
>> I tried to use some external GPU on a g41m-es2l to get some digial screen
>> output. It does not seem to work. When having build coreboot with native
>> vga-init for the internal intel gpu, i never get a output from the nvidia card.
>> When i connect the analog VGA cable to the internal intel gpu and boot up i can
>> see many nouveau (memory-space?) errors. Both GPUs (nvidia and intel) are then
>> enabled at once. Kernel 4.10 cant boot.
>>
>> I tried removing the native vga-init. The only change is then that the Intel
>> GPU works only when the kernel have load. Nvidia card deliver still same
>> errors.
>>
>> With OEM-bios the intel card gets disabled and a PCIe GPU works fine.
>
> Please provide coreboot boot logs.
>
> Stefan
Actually https://review.coreboot.org/#/c/18504/
https://review.coreboot.org/#/c/18511/ (not sure if needed) and
https://review.coreboot.org/#/c/18513/ (works but might be improved)
fix this issue.
--
Arthur Heymans