I'm relatively new to Ubuntu, and am currently setting up a machine for dedicated GPU programming. I'm running Ubuntu 16.04 on an Asus desktop with integrated graphics. It might be worth noting that I was able to run without issue with no GPU installed. I have already successfully installed CUDA to run on an Nvidia GeForce GTX Titan GK110, and set the BIOS to run main diplay graphics from the iGPU. Nonetheless, nvidia-smi gives me the folloing readout:
+-----------------------------------------------------------------------------+
| NVIDIA-SMI 375.26 Driver Version: 375.26 |
|-------------------------------+----------------------+----------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
|===============================+======================+======================|
| 0 GeForce GTX TITAN Off | 0000:01:00.0 Off | N/A |
| 30% 40C P8 14W / 250W | 216MiB / 6082MiB | 0% Default |
+-------------------------------+----------------------+----------------------+
+-----------------------------------------------------------------------------+
| Processes: GPU Memory |
| GPU PID Type Process name Usage |
|=============================================================================|
| 0 1015 G /usr/lib/xorg/Xorg 107MiB |
| 0 3654 G compiz 107MiB |
+-----------------------------------------------------------------------------+
Unless I'm mistaken, this suggests that X server and compiz are still running on the GPU. I would very much prefer that they run on integrated graphics instead. Is there a way to change this using OS settings? Any clarification would be appreciated.
