Problems with NVidia on Lenovo ThinkPad T430

[Tobias Dausend]

Hello everybody!

I have problems with getting coreboot running on a Lenovo ThinkPad T430.
Better to say: Running with the integrated second graphics adapter NVS
5400M. The Intel HD 4000 is working fine and from the wiki I know that
NVidia Optimus is not supported for now. So what to do exactly getting
the graphics adapter running? Even only NVidia only would be great. Both
adapters are not needed on GNU-Linux for my usecase. I have two VGA-ROMs
extracted and compiled this using the concurrent stable-version 4.7. Is
this wrong? Some help and hints would be appreciated.

Best regards,
Tobias.

[Tobias Dausend]

> 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.

[Christoph Pomaska]

Hi Tobias,

I used UEFItool to extract the Nvidia option ROM, that wiki page under 
"UEFI method":

https://www.coreboot.org/VGA_support

On the T430 I found two blobs, one of about 60k in size and one that's 
about double the size, but I wasn't able to properly test yet which one is 
needed.

Best regards
Christoph Pomaska / Sellerie

Am 4. April 2018 12:41:35 nachm. schrieb Tobias Dausend 
:

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.

[Tobias Dausend]

Hey Christoph,

I had also a first tryout with the UEFItool and had one ROM extracted.
But afterwards did this with PhoenixTool and got two ROMs with the same
size. Thanks for the hint afterwards, because one ROM seems not working
after all. I'll have a look in the dumped list from PhoenixTool.

Have you used the stable version?

Best regards,
Tobias Dausend.

Am 04.04.2018 um 15:25 schrieb Christoph Pomaska:
> Hi Tobias,
>
> I used UEFItool to extract the Nvidia option ROM, that wiki page under
> "UEFI method":
>
> https://www.coreboot.org/VGA_support
>
> On the T430 I found two blobs, one of about 60k in size and one that's
> about double the size, but I wasn't able to properly test yet which
> one is needed.
>
> Best regards
> Christoph Pomaska / Sellerie
>
> Am 4. April 2018 12:41:35 nachm. schrieb Tobias Dausend
> :
>
> 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.

[Tobias Dausend]

Hello Michał,

which size got your option ROM for the Nvidia card?

Regards,
Tobias.

Am 04.04.2018 um 15:20 schrieb Michał Kopeć:
> Hello,
>
> I'm currently using the latest Git snapshot on my machine. I also 
> compiled with the Intel option rom and added the nvidia option rom 
> using cbfstool after, like you did. I haven't tried 4.7, so I couldn't 
> tell you how it works there.
>
> Regards,
> Michał Kopeć