[Bug 90534] integrated LVDS displays stays dark (firmware-linux-nonfree-0.43)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90534

--- Comment #16 from Christian König <deathsimple at vodafone.de> ---
(In reply to Elmar Stellnberger from comment #15)
> Formerly this firmware was OSS and as far as I can remember it had always
> been working while the firmware had been OSS.

The firmware for radeon has always been proprietary, but you only need it for
acceleration.

Pure modesetting should still work without. The problem is that we rarely test
without the firmware, so this breaks from time to time.

Since your bug sounds like an external display still works I would expect that
acceleration actually works perfectly fine. So the firmware most likely isn't
the cause of the problem.

I would rather guess that it is an issue with the newer kernel. Please try
downgrading that one first and see if you can find a working version. Then
bisect from those two points in time.

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