Lenovo X1 carbon 3460 Screen stays black

[Jo]

Hello Guys,

I wanted to get coreboot on my Lenovo X1 Carbon 1gen (3460) ,

so i followed the tutorial, however after flashing it, the screen stayed
black.So i flashed the Vendorbios back and im kinda stuck now, help
would be really appreciated.

This is my*config file* (if you care to have a look)

https://pastebin.com/FYrsmXPb

and the output of *inteltool -m* (spd data)

https://pastebin.com/JZQYb3p3

also the output of *inteltool -g*

https://pastebin.com/wDNRxM4U

_and i*nteltool -G*_

https://pastebin.com/zJV3dE8A

_cheers _

[John Lewis]

Howdy,

In your config file you have:

# CONFIG_VGA_BIOS is not set

in coreboot, which will mean that coreboot doesn't setup the display, 
but in your SeaBIOS config you have:

CONFIG_SEABIOS_VGA_COREBOOT=y

which will try to reuse whatever coreboot has setup. So as you might 
understand, this causes a bit of a catch 22. :)

Either tell coreboot to run the BIOS *or* set the VGA Hardware Type to 
"none" in SeaBIOS.

Other common problems are getting the pci id's for your graphics card 
wrong and using the wrong offset for SeaBIOS to find CBFS (so it can 
run things like VGA ROM's).

It would be helpful if you had a distro already loaded, as that will 
try to initialise the display even if the BIOS hasn't, which can be 
handy (so you can get and see cbmem output to figure out what is wrong)

After all that, my first answer may not be the solution and there may 
also be something else stopping the system getting as far as running 
the VGA BIOS.

Hope this helps,

John.

On Sat, 5 Aug, 2017 at 2:40 PM, Jo  wrote:
> Hello Guys,
>
> I wanted to get coreboot on my Lenovo X1 Carbon 1gen (3460) ,
>
> so i followed the tutorial, however after flashing it, the screen 
> stayed black.So i flashed the Vendorbios back and im kinda stuck now, 
> help would be really appreciated.
> This is my config file (if you care to have a look)
>
> https://pastebin.com/FYrsmXPb
> and the output of inteltool -m (spd data)
>
> https://pastebin.com/JZQYb3p3
> also the output of inteltool -g
>
> https://pastebin.com/wDNRxM4U
>
> and inteltool -G
>
> https://pastebin.com/zJV3dE8A
>
> cheers

[Nico Huber]

On 05.08.2017 16:47, John Lewis wrote:
> Howdy,
>
> In your config file you have:
>
> # CONFIG_VGA_BIOS is not set
>
> in coreboot, which will mean that coreboot doesn't setup the display,
> but in your SeaBIOS config you have:
>
> CONFIG_SEABIOS_VGA_COREBOOT=y
>
> which will try to reuse whatever coreboot has setup. So as you might
> understand, this causes a bit of a catch 22. :)

No, that's alright because coreboot has other means to set up gfx. In
this case CONFIG_MAINBOARD_USE_LIBGFXINIT=y.

Nico

[Nico Huber]

On 05.08.2017 15:40, Jo wrote:
> Hello Guys,
>
> I wanted to get coreboot on my Lenovo X1 Carbon 1gen (3460) ,
>
> so i followed the tutorial, however after flashing it, the screen stayed
> black.So i flashed the Vendorbios back and im kinda stuck now, help
> would be really appreciated.
>
> This is my*config file* (if you care to have a look)
>
> https://pastebin.com/FYrsmXPb
>
> and the output of *inteltool -m* (spd data)
>
> https://pastebin.com/JZQYb3p3
>
> also the output of *inteltool -g*
>
> https://pastebin.com/wDNRxM4U
>
> _and i*nteltool -G*_
>
> https://pastebin.com/zJV3dE8A

As expected, you have a unsupport memory configuration. Here is a
patch that adds your dumped data:

https://review.coreboot.org/#/c/20887/

You can check it out with

git fetch https://review.coreboot.org/coreboot 
refs/changes/87/20887/1 && git checkout FETCH_HEAD

I hope it works, I didn't look very deep into it.

Nico

[Alexander Couzens]

Hi Nico,

here is a follow. I somehow missed that when reviewing your commit...
https://review.coreboot.org/#/c/20918/

@Jo here is my image. I've enabled usb debug for output, which consumes
a lot boot time. So better compile coreboot another time on your own.

https://own.fe80.eu/s/OzAMekv0TpRGsFj

Best,
lynxis