https://bugs.freedesktop.org/show_bug.cgi?id=38473
--- Comment #7 from Benjamin Franzke benjaminfranzke@googlemail.com 2011-06-27 02:10:14 PDT --- Screen turning off should be fixed for src/egl/opengl/eglkms.c by http://cgit.freedesktop.org/mesa/demos/commit/?id=0e83890b5eae0236537d844c60...
Note: you need mesa git master.