F18: bumblebee/bbswitch stopped working after latest update

[Alexander Volovics]

Anybody else noticed that bumblebee and bbswitch stopped
working after the latest update to Fed18
(kernel-3.7.4-204.fc18.x86_64, xorg-x11-drv-nouveau-1.0.6-1.fc18.x86_64, etc.)

This on a laptop with optimus (intel/nvidia).

Could the fact that "/sys/kernel/debug/vgaswitcheroo/switch" is
now a default entry and that "vga_switcheroo" is enabled have anything to do
with it.

dmesg |grep switcheroo
[   13.840837] VGA switcheroo: detected Optimus DSM method
\_SB_.PCI0.PEG0.PEGP handle
[   16.711017] vga_switcheroo: enabled

cat /sys/kernel/debug/vgaswitcheroo/switch
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :Pwr:0000:01:00.0

AV