mike@shion:~$ LIBGL_DEBUG=verbose /usr/lib/xscreensaver/busyspheres libGL: XF86DRIGetClientDriverName: 1.7.2 i915 (screen 0) libGL: OpenDriver: trying /usr/lib/dri/i915_dri.so drmOpenDevice: node name is /dev/dri/card0 drmOpenDevice: open result is 4, (OK) drmOpenByBusid: Searching for BusID pci:0000:00:02.0 drmOpenDevice: node name is /dev/dri/card0 drmOpenDevice: open result is 4, (OK) drmOpenByBusid: drmOpenMinor returns 4 drmOpenByBusid: drmGetBusid reports pci:0000:00:02.0 libGL warning: 3D driver claims to not support visual 0x5b libGL error: Can't open configuration file /etc/drirc: No such file or directory. libGL error: Can't open configuration file /home/mike/.drirc: No such file or directory.