On Mon, Jul 01, 2013 at 10:39:14PM +0200, Marek Vasut wrote: > Hi guys, > > I recently got the rMBP 10,1 model, it has two graphic cards: > > 00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor > Graphics Controller (rev 09) > 01:00.0 VGA compatible controller: NVIDIA Corporation GK107M [GeForce GT 650M > Mac Edition] (rev a1) > > I'm running linux 3.10-rc7 . The nvidia works with nouveau, but I'd prefer to > switch the nvidia off altogether and use the intel GPU. > > So far I arrived at the point where I disabled X11, mounted debugfs and tried > the vgaswitcheroo. With the nvidia still in operation, I see the console. > Unfortunatelly, I end up with a black screen after I run the following command > to switch to the intel GPU: > > echo IGD > /sys/kernel/debug/vgaswitcheroo/switch > > If I try to switch back to the nvidia card (using echo DIS > ...), the screen > remains black. This state persists until reboot. I suspect [1] is the same bug, > none of the hints there helped. It is not that bug. This bug I believe is that no one has figured out how to reprobe the eDP and initialise it after a vgaswitch. -Chris -- Chris Wilson, Intel Open Source Technology Centre
