[Intel-gfx] 3.11.0+ Laptop screen goes blank during kernelboot

[Jani Nikula]

Hi Hans -

On Sat, 07 Sep 2013, Hans de Bruin <jmdebruin at xmsnet.nl> wrote:
> Since a day or two the screen of my laptop goes blank when the kernel 
> switches resolution in the boot process. Happily the x-server turns it 
> on again.

Please try the drm-intel-nighly branch of
git://people.freedesktop.org/~danvet/drm-intel

I suspect this might be a regression from upstream
commit 045ac3b5629d9711531a408e92f9074db6afe7ce
Author: Jesse Barnes <jbarnes at virtuousgeek.org>
Date:   Tue May 14 17:08:26 2013 -0700

    drm/i915: add encoder get_config function v5

fixed by
commit 775e18a9561725e07ea68ada82880013e7b70cb7
Author: Imre Deak <imre.deak at intel.com>
Date:   Tue Jul 30 13:36:32 2013 +0300

    drm/i915: make user mode sync polarity setting explicit

in drm-intel-nightly.

The fix seems to apply cleanly on 3.11 too, could try that also.


BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center