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How I could tell if graphics processing (3D, video encode/decude) in Ubuntu is utilizing hardware acceleration (ie. using GPU). Is there a utility that can help?

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2 Answers 2

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Try the following command if you're running Unity:

/usr/lib/nux/unity_support_test -p

It will tell you if you're using a Software renderer.

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you can use glxinfo to test if your X server is using the GPU driver. glxinfo queries X server about its OpenGL version, renderer string, Visuals supported and other infomation.

glxinfo | less
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    Even I had this doubt. So what am I supposed to look at in the output of this command? Apr 30, 2014 at 6:06
  • OpenGL version, vendor string, renderer string. then you'll know if you're running open source drivers or proprietary drivers or software rasterizers.
    – sgx1
    Apr 30, 2014 at 6:18

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