Comment # 5 on bug 1090122 from Vladimir FROMENT

It appears that nouveau was already blacklisted, I forgot I had installed
bumblebee some time ago... So I did various tests to make sure that the Xorg
fallback failure wasn't related to bumblebee. It isn't, it keeps failing.
I tried also with nouveau enabled again but it didn't change anything. FYI I
did ran the initrd command after enabling it.
Now the system is in the situation where nouveau is blacklisted again and
bumblebee is removed (I�reinstalled bbswitch though).