Comment # 5 on bug 1089116 from Bit Juggler

(In reply to Michal Srb from comment #3)
> (In reply to Stefan Dirsch from comment #2)
> > Boot from USB-Stick with kernel parameters "acpi_os_name="Linux"
> > nouveau.modeset=0 3"
> 
> Ok I missed that. And in addition apparently nouveau was blacklisted:
> 
> > vi /etc/modprobe.d/50-blacklist.conf (to add "blacklist nouveau")
> 
> That makes this bug pure duplicate of bug #1068961.
> 
> I do not really know how is the bumblebee supposed to work, but I would
> expect you need to have either nouveau or nvidia driver installed.

If you install bumblebee you are requested to blacklist nouveau so that
bumblebee can load it under its own control.

I'm not expert enough to tell whether bug #1068961 refers to the same problem
or not.