No /sys/kernel/debug/vgaswitcheroo/switch file

[elyazalmahfouz]

I have recently installed fedora 17 and I can't find the file /sys/kernel/debug/vgaswitcheroo/switch which I will need to be able to switch between the two graphics cards on my system, any clue?

Thanks for your help,

[droidhacker]

Are both graphics cards enabled? Assuming that one of the GPUs is integrated (which I believe to be mandatory), there should be a configuration option in the bios to select between "integrated" and "switchable".

[flyingfsck]

Do you mean that xrandr doesn't work?

[stevea]

It's there - you likely don't have your hardware enabled in the BIOS.

[stevea@crucibulum kernel]$ uname -r
3.5.0-2.fc17.x86_64
[stevea@crucibulum kernel]$ cat /sys/kernel/debug/vgaswitcheroo/switch
0: DIS: :Pwr:0000:01:00.0
1:IGD:+:Pwr:0000:00:02.0

Originally Posted by flyingfsck

Do you mean that xrandr doesn't work?

xrandr is for changing and configuring interfaces ,not GPUs.