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.
Can you please give me any hint/patch/idea/... how to continue?
Thank you!
[1] https://bugs.freedesktop.org/show_bug.cgi?id=61115
Best regards, Marek Vasut