HAOUAS Elyes has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/30881 )
Change subject: nb/intel/i945: Reduce pcidev_on_root() calls ......................................................................
Patch Set 1:
this let the board I have to boot. I can see SeaBIOS msg , but as soon as linux try to run X, it went to black screen and got "no signal". looks like there is a conflict between IGD and the external GPU. here is the log: https://pastebin.com/Eid035HV
I'll try other tests and keep you updated.
sorry for "looks like there is a conflict between IGD and the external GPU.", this is not true. using lspci, there is no IGD.
The board boots fine in console mode, however, when Linux start X, it fails.
inside Xorg log, I can see: UnloadSubModule VBE unloading VBE Screen(s) found, but none have a usable configuration.