I'm using an ASUS laptop (MUXless graphics) w/ a GT 630M (re-branded 540M) GPU and only Fedora 16 installed. I installed bumblebee and the NVIDIAdrivers using the instructions described here: http://duxyng.wordpress.com/2012/01/26/finally-working-nvidia-optimus-on-fedora-16/
These instructions worked perfectly with the bumblebee service running properly between different subversion of the Linix kernel 3.3. If I load the kernel version 3.3.7 and 3.3.8 the bumblebee service will start and allow the
optirun command to work. This does not happen with kernel version 3.4.2, and the bumblebee service fails to start.
This issue seems to have been brought up here: https://github.com/Bumblebee-Project/bbswitch/issues/23
I'm perfectly fine using the older kernels, but now I have to avoid any kernel updates. I'm wondering if anyone has any familiarity with this issue, it seems to be a rather recent one.