I have attempted to get my nVidia 970M working in 14.04 but despite the many (many!) methods out there, none seems to work for me.
Using the instruction from How to set up nVidia Optimus/Bumblebee in 14.04 on clean install, I got the following outputs:
$ optirun -vv firefox
[ 81.193199] [DEBUG]Reading file: /etc/bumblebee/bumblebee.conf
[ 81.193469] [DEBUG]optirun version 3.2.1 starting...
[ 81.193476] [DEBUG]Active configuration:
[ 81.193478] [DEBUG] bumblebeed config file: /etc/bumblebee/bumblebee.conf
[ 81.193480] [DEBUG] X display: :8
[ 81.193481] [DEBUG] LD_LIBRARY_PATH: /usr/lib/nvidia-331:/usr/lib32/nvidia-331
[ 81.193483] [DEBUG] Socket path: /var/run/bumblebee.socket
[ 81.193485] [DEBUG] Accel/display bridge: auto
[ 81.193487] [DEBUG] VGL Compression: proxy
[ 81.193489] [DEBUG] VGLrun extra options:
[ 81.193491] [DEBUG] Primus LD Path: /usr/lib/x86_64-linux-gnu/primus:/usr/lib/i386-linux-gnu/primus
[ 81.193689] [DEBUG]Using auto-detected bridge primus
[ 81.617084] [INFO]Response: No - error: Could not load GPU driver
[ 81.617093] [ERROR]Cannot access secondary GPU - error: Could not load GPU driver
[ 81.617095] [DEBUG]Socket closed.
[ 81.617105] [ERROR]Aborting because fallback start is disabled.
[ 81.617108] [DEBUG]Killing all remaining processes.
$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
$ lspci | grep NVIDIA
01:00.0 3D controller: NVIDIA Corporation Device 13d8 (rev a1)
When I try to go via the nvidia-prime route using instructions from How to install and configure Nvidia Optimus driver on Ubuntu,
- Additional Drivers list is empty even after following No additional drivers available
- selecting the nvidia card produces a blank screen, which in itself is not a problem, but suggest that something is not working.
- lightdm doesn't restart when I try to switch back to the Intel card.
P.S. I only want to use CUDA, if that can simplify things.
