Daniel Robitaille determined that this is due to the fact that totem is now defaulting to Xshm rather than Xv visuals. This may be due to incompatibilities between Xv and Xcomposite with the radeon driver, but I don't have confirmation on this point.
https://lists.ubuntu.com/archives/sounder/2007-February/009855.html https://lists.ubuntu.com/archives/sounder/2007-February/009856.html https://lists.ubuntu.com/archives/sounder/2007-February/009857.html -- [totem-gstreamer] Totem video output doesn't use xv https://launchpad.net/bugs/80820 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
