Code: $ glxinfo |fgrep Yes direct rendering: Yes $ glxgears Running synchronized to the vertical refresh. The framerate should be approximately the same as the monitor refresh rate. 118730 frames in 5.0 seconds 113591 frames in 5.0 seconds 119930 frames in 5.0 seconds 119914 frames in 5.0 seconds 120201 frames in 5.0 seconds 116454 frames in 5.0 seconds