Comment # 3 on bug 1089116 from Michal Srb

(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.