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Re: [Libreboot] lcd-panel 1440x900 not working (external monitor ok)

From: Leah Rowe
Subject: Re: [Libreboot] lcd-panel 1440x900 not working (external monitor ok)
Date: Thu, 28 Jul 2016 23:13:12 +0100
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Hi Marcel,

Op 28/07/16 om 18:32 schreef Marcel Maci:
> Hi Leah
> Thx for your answer. I tried experimental_86_g07ed7f9 with my
> Thinkpad T400 today. Everything is running (I can tell from the
> noise of the HDD and also indicator of wifi comes up after blindly
> logging into the system), but graphics fail completely: not even
> external VGA-Monitor works and LCD-panel doesnt even flicker. Sewed
> an opening in the metal chassis today, so that I can access the
> flash chip more easily now (see photo attached, I was really fed up
> with all those screws, the heatsink and thermal paste ... :-), so
> flashing and testing a new image is much more straightforward now.
> As to the Thinkpad x60s: the improvements sound great, but I will
> leave it as it is for the moment (I use it as my main computer for
> office work at the moment, so it has to work ... ;-), but I have
> another Thinkpad x60 (not the s model) which I can try instead.
> Let me know if you want me to test another release candidate.
> Marcel

Thank you for your report. If you also have coreboot logs, that would
be great.

It seems that upstream coreboot has a regression somewhere in native
graphics initialization on the T400. Previous betas worked, before we
updated the revision of coreboot used for your laptop. We'll have to
revert back to the previous revision for now, and disable text mode on
it, until this can be fixed. Other people also reported the same issue
as you with the T400.

We also need to do this for now on X200, because USB is broken for
some reason in text mode on that system (unless it's fixed).

By the way, what you've done to that metal chassis around the board is
not good. That part of it is needed for structural integrity. If you
want easier access to the chip, you could solder wires and route those
instead. You've already done it now, so no point worrying.

- -- 
Leah Rowe

Libreboot developer

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