[coreboot] Troubles with 17'' WXGA on Roda RK886EX

[Vitaly Chertovskih]

Hi!

I'm experiencing some troubles with VGA on notebook "Roda RF8". That
notebook's motherboard and other specification is exact to Roda RK886EX,
only the screen is larger (17'' WXGA 1440x900).
On that week I installed coreboot on Roda RK886EX, it starts perfectly. But
when i flashed the same coreboot on notebook RF8 - the screen is lightened,
but remains blank. When i connect external LCD - it(external) works well
with coreboot. So, i think, that the trouble is in initialization of that
internal widescreen LCD.

Roda RK886EX have LCD 15.1“ XGA (1024x768) - works perfect.
Roda RF8 - 17'' WXGA 1440x900 - blank (but lightened) screen (other init and
OS booting is perfect with external LCD)

The log file says nothing - when coreboot or seabios calls vga.bin - all is
ok, like on Roda RK886EX.

Please, help me. Where and how i can fix that?

P.S.

I build coreboot, choosing Roda motherboard, adding compiled SeaBIOS image
(I download it from coreboot.org), and including VGA onboard rom, grabbed
from /dev/mem as described in howtos on coreboot.org.

I include my log from COM1.