I managed to reproduce this with the free radeon driver, by installing mesa vdpau acceleration from here https://launchpad.net/~oibaf/+archive/graphics-drivers package: libg3dvl-mesa
I managed to reproduce this with the free radeon driver, by installing mesa vdpau acceleration from here https:/ /launchpad. net/~oibaf/ +archive/ graphics- drivers package: libg3dvl-mesa