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.

[Stefan Reinauer]

* Vitaly Chertovskih  [110303 20:08]:
> 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.

Hi Vitaly,

it looks like your option rom does not match the graphics device

PCI: 00:02.0 [8086/27ae]

Your option rom seems to be for 8086/27a2 ...

Please also increase the log level of SeaBIOS.

Stefan

[zxy__1127]

Hi

I think it's a issue about lvds setting in VGA rom.
You can get the vbios from Intel's web site, and you need to modify it to fit your screen.
8086/27ae 8086/27a2 just different ID,because your have let the VGA rom run, so it doesn't matter  :-)

thanks!
2011-03-04

zxy__1127

* Vitaly Chertovskih  <[e-mail] > [110303 20:08]:
> 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.

Hi Vitaly,

it looks like your option rom does not match the graphics device

PCI: 00:02.0 [8086/27ae]

Your option rom seems to be for 8086/27a2 ...

Please also increase the log level of SeaBIOS.

Stefan

[Stefan Reinauer]

On 3/3/11 9:46 PM, zxy__1127 wrote:
> Hi
> I think it's a issue about lvds setting in VGA rom.
> You can get the vbios from Intel's web site, and you need to modify it
> to fit your screen.
> 8086/27ae 8086/27a2 just different ID,because your have let the VGA
> rom run, so it doesn't matter :-)

It should be easier to grab the vbios from the existing BIOS. According
to the logs that were attached, at least coreboot did not run the vbios
at all.

Stefan

[zxy__1127]

Then need to let it run correctlly first.
3 steps:
1)  CONFIG_VGA_BIOS_ID="8086,27ae"
2)  modify VGA rom in hex, offset 46h =0xae
3）ignor the checksun error in payload(seabios....).

may be there are  better ways,let me know :-)

Thanks!
2011-03-04

zxy__1127

On 3/3/11 9:46 PM, zxy__1127 wrote: 
Hi

I think it's a issue about lvds setting in VGA rom.
You can get the vbios from Intel's web site, and you need to modify it to fit your screen.
8086/27ae 8086/27a2 just different ID,because your have let the VGA rom run, so it doesn't matter  :-)

It should be easier to grab the vbios from the existing BIOS. According to the logs that were attached, at least coreboot did not run the vbios at all.

Stefan