Comment # 62 on bug 27501 from Pierre Moreau

Patch is now present in 3.19-rc4, closing this bug report as solved.

For those who have the NV96 along the NVAC, you need to use l3iggs technique
and reset+rescan (echo 1 > /sys/bus/pci/devices/0000:02:00.0/{reset,rescan})
the NV96 **before** loading Nouveau to avoid a hang when starting X and another
hang when trying to power off the NV96.