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