Lass es ein, bringt alles nichts.
ZitatDebunking the Myth (glxgears is a benchmark)glxgears is not a benchmark.
You can use it to show that DRI works, but it does not even test that well. There's glxinfo or your Xorg.0.log to tell you if DRI was enabled as well.
And for the people who're wondering why CPU usage is 100%, while glxgears seems to be giving quite a lot of fps: yes, this is normal, because it tries to get the max number of frames per second. Checking CPU usage for glxgears is not a way to see if direct rendering works.