Comment # 4 on bug 1089116 from Bit Juggler

(In reply to Stefan Dirsch from comment #2)
> (In reply to Michal Srb from comment #1)
> > Is nouveau kernel module loaded? 
> 
> Seems it's not. By intention for whatever reasons ...
> 
> Boot from USB-Stick with kernel parameters "acpi_os_name="Linux"
> nouveau.modeset=0 3"

Those parameters were only used to boot the installation media for installation
and to boot the very first time after installation in order to install all
software necessary to run bumblebee (both times in runlevel 3).

After that no kernel parameters are used.