I am running Ubuntu 14.04 on a Sager 9377 with dual NVIDIA 980M GPUs in SLI, and I am having some trouble setting up the CUDA aspect of them. I have the standard drivers installed and working with no problem at all, but I am unable to render anything using the CUDA technology. Each time I come up with the same results. When I restart the laptop, the resolution becomes all messed up to where the login screen is massively stretched out of the bounds of the laptop screen bounds, and when I log in, all I see is the background image of my desktop.
At this point, I am unable to open and use any programs to fix this. I have tried everything I can think of, from using various drivers, installing Boinc to enable the CUDA cores, and using the CUDA Toolkit, all to no avail. I did a fresh install each time. What is the best way to go from here?
I am also having trouble getting my optical drive to play DVDs and Blu-ray discs as well. I have all the proper drivers installed as well (as far as I know).
In case you need to know, here are my system's specs:
• Ubuntu 14.04 64-bit
• Intel i7 4940MX
• 32GB Kingston RAM @ 1600 MHz.
• (x2) Samsung 840 EVO 1 TB SSD
• (x2) NVIDIA GTX 980M GPUs in SLI
I tried temporarily removing each one of the NVIDIA GTX 980M GPUs and using only the other one to check, and when I take out the primary GPU, the computer starts up and runs normally, but on just the one GPU. When I switched out to the other one in the GPUs and ran like it always does, but only on the main card with both showing up. When I ran on neither, the computer ran like normal, but the resolution was lowered from 1920x1080 to 1600x900. The main thing is I want to be able to render on my GPUs in Blender 3D, but I need to run that using the CUDA cores to be able to do that.