When I'm not locally logged into my Linux machine, my GPU wasn't appearing in the list of devices. I tried running with DISPLAY=:0, and that fixed it. However, what happens if I'm running a GUI program that's OpenCL accelerated? Changing my DISPLAY environment variable would send the UI to the wrong place!
Is there some alternative variable I can set for the APP SDK, that will override DISPLAY?
Solved! Go to Solution.