Hola Xavi, Probably I've got the same laptop as you, Mountain Cobalt :) . The important thing is that I've got the same hardware and finally I've manage to get the nvidia 960M working with bumblebee.
The problem is not related with the DRM message. The main problem is that we can't use the package bumblebee-nvidia because we need, at least, the version 346.59 (released few days ago) and the package install the version 340.65-2. These are the steps I''ve followed after a fresh installation of debian jessie. 1.- # aptitude install bumblebee primus 2.- # adduser <youruser> bumblebee 3.- Download the latest nvidia driver (at 15/04/2015 is 346.59) from nvidia.com 4.- Install the driver. Be aware not to install the opengl files or you will probably break your current X installation. Use the options "./NVIDIAxxxxx.run --dkms -Z --no-opengl-files" 5.- Restart X to check if everything is OK 6.- Now starts the tricky part. We need to setup the system in a way that bumblebee finds the nvidia driver and it doesn't break the intel configuration. Extract the files of the nvidia installer "./NVIDIAxxxx.run -x". To get everything in the same place I've copied all the files extracted to "/nvidia" and created two folders within it "lib" and "lib32" for 64bits and 32 bits respectively. 7.- # mkdir /nvidia/lib 8.- # cp /nvidia/libnvidia-tls.so.346.59 /nvidia/lib 9.- # cp -R /nvidia/tls /nvidia/lib 10.- # cp /nvidia/libnvidia-openglcore.so.346.59 /nvidia/lib 11.- # cp /nvidia/libGL.so.346.59 /nvidia/lib 12.- # ln -s /nvidia/lib/libGL.so.346.59 /nvidia/lib/libGL.so.1 13.- # ln -s /nvidia/lib/libGL.so.346.59 /nvidia/lib/libGL.so 14.- # ln -s /nvidia/lib/libnvidia-tls.so.346.59 /usr/lib/x86_64-linux-gnu 15.- # ln -s /nvidia/lib/tls /usr/lib/x86_64-linux-gnu 16.- # ln -s /nvidia/lib/libnvidia-openglcore.so.346.59 /usr/lib/x86_64-linux-gnu 17.- Repeat steps 7 to 16 with /nvidia/32, /nvidia/lib32 and /usr/lib/i386-linux-gnu in case you want the 32bits working (for example for steam) 18.- Edit /etc/bumblebee/bumblebee.conf and set up the driver=nvidia, Kerneldriver=nvidia, LibraryPath=/nvidia/lib:/nvidia/lib32, ModulePath=/nvidia/lib,/nvidia/lib32,/usr/lib/xorg/modules,/usr/lib/xorg/modules/drivers,/usr/lib/xorg/modules/input 19.- Edit /etc/bumblebee/xorg.conf.nvidia and uncomment bus pci line 20.- # /etc/init.d/bumblebee stop 21.- # /etc/init.d/bumblebee start 22.- $ glxgears -info (working with intel) 23.- $ primusrun glxgears -info (working with nvidia) I hope this works for your too. I've written the steps by hearth, so forgive if any file is not written properly. Any question don't hesitate to contact me. Un saludo, Kind regards, Daniel
