libvdpau-va-gl is work-in-progress. While it works fine with Adobe Flash Player, it may cause problems with other VDPAU-enabled software. Therefore, it has not been enabled system-wide by default. You can either enable it by uncommenting the appropriate lines in `/etc/X11/Xsession.d/20vdpau-va-gl` or enable only for some software by setting `VDPAU_DRIVER` environment variable. For example, to enable it in Chromium, start Chromium with the following command line: VDPAU_DRIVER=va_gl chromium -- Vincent Bernat , Sun, 16 Jun 2013 12:34:31 +0200