I have Linux Mint 13 64 bit version with cinnamon, NVdia Geforce 320m, proprietary driver 304.54 if I'm not mistaken. I installed bumblebee following this guide:sudo add-apt-repository ppa:bumblebee/stablesudo apt-get updatesudo apt-get install bumblebee bumblebee-nvidia linux-headers-genericRebooted, and now I have 640x480 resolution, half-broken gnome 3 was loaded (there are no buttons to log out or reboot, no animations of course). When I try to run nvidia-settings I get:You do not appear to be using the NVIDIA X driver.  Please edit your X configuration file (just run `nvidia-xconfig` as root),and restart the X server.What shall I do to fix this? I want my discrete graphics card and cinnamon back.
cinnamon doesn't start, bumblebee problem
linux mint;nvidia;graphics
I know I'm late, but the fix probably was changing bumblebee config around. Sometimes there's a desync where you are officially using a different driver than Bumblebee thinks you are, and when it tries to do stuff it points at inaccurate libraries, wrong drivers and overall armageddon ensues. Bumblebee config is under /etc/bumblebee/bumblebee.conf and you wanna set the used driver in shared [bumblebeed] section with Driver=nvidia (or nouveau) and then the precise driver and its libs in the specific driver section [driver-nvidia] or [driver-nouveau]). In the case of nvidia-304 it's KernelDriver=nvidia-304, LibraryPath=/usr/lib/nvidia-304:/usr/lib32/nvidia-304 and XorgModulePath=/usr/lib/nvidia-304/xorg,/usr/lib/xorg/modules.Remember to always update this when switching drivers around!I just fixed my setup this way, so I hope necrobumping this will help people searching for the same thing as me.