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<pre>Dear Paul,
> As you can see, the vendor firmware detects a dual-link LVDS
> configuration.
>
> [drm:intel_lvds_init] detected dual-link lvds configuration
>
> With coreboot a single-link LVDS configuration is detected.
>
> [drm:intel_lvds_init] detected single-link lvds configuration
Thank you for checking the logs!
> Francis Rowe wrote to the list, that this is configured during compile
> time in coreboot [1][2]. You’d need to rebuild your image. Then you
> should have at least graphics when Linux started.
Yes, I am very happy that they found a workaround. This is the next thing I am going to do.
Because I re-flashed the Lenovo Bios I have to disassemble the T400 again to reach the flash chip.
I wanted to provide you with the logs first.
> There are two more things two do.
>
> 1. Contact the Linux i915 folks and ask them, if the module is able to
> detect the configuration itself and does not rely on the firmware or if
> there is a way to override that setting from the Linux command line.
Who is going to do this? Is this [<a href="https://01.org/linuxgraphics/community/kernel">1</a>] the right community? I am not sure, if I am able to explain it right.<br />If you want me to do this, what do you mean exactly with "the module", is it "i915"? <br /><br />On [<a href="http://libreboot.org/docs/hcl/gm45_lcd.html">2</a>], is written:<br />"Linux (kernel) has its own init code (including EDID parsing). The current suspicion is that coreboot's<br />own initialization code has buggy EDID parsing in some way, such that the proper settings for the panel
are not used, leading to the failure."<br /><br />Please tell me, if I understand it right:<br />The kernel module should not rely on coreboot concerning the settings for the display and you want to know, <br />if the kernel module is able to get the needed information direct from the display (EDID)? If this is possible, you want to know,<br />if this is cofigurable with the Linux command line? Means "Linux command line" the same as "kernel command line"?<br />
> 2. Improve coreboot so that the LVDS link configuration is detected
> during runtime as the vendor firmware (VGA Option ROM/Video BIOS(?))
> does.<br /><br />While I am learning a lot of things working on this issue, this is far above my skills.<br />
Best regards,<br /><br />Kroms
[1] <a href="https://01.org/linuxgraphics/community/kernel">https://01.org/linuxgraphics/community/kernel<br /></a>[2] <a href="http://libreboot.org/docs/hcl/gm45_lcd.html">http://libreboot.org/docs/hcl/gm45_lcd.html</a><a href="https://01.org/linuxgraphics/community/kernel"><br /></a></pre>
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