How to tell if graphics processing in Ubuntu is utilizing hardware acceleration [duplicate]
Solution 1:
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.
Solution 2:
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