[Intel-gfx] I915 regression : black screen at boot / Sandybridge Mobile (GT2)

[Daniel Vetter]

On Thu, Jan 19, 2012 at 04:01:43PM +0000, Markus Lux wrote:
> I have the same problem with my L520, too.
> 
> I also have an external VGA Monitor connected - I got graphical output there an
> can work with it normally. But my laptop screen stays black all the time. Also
> after rebooting the machine, sometimes the laptop screens brightness is darker
> than it should be at boot time (which I find quite weird).
> I use Arch Linux, Package linux-3.2.1-1

Can you try the latest drm-intel-fixes branch from
https://git.kernel.org/?p=linux/kernel/git/keithp/linux.git;a=summary
please? That contains the patch discussed here which hopefully fixes this
issue for you, too.

Thanks, Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
Mobile: +41 (0)79 365 57 48