This or something similiar happend for me with 8.10 (amd64) and the default fglrx (2:8.543-0ubuntu4).
Every few minutes mplayer as well as totem lagged for maybe half a second; no mplayer warning in the console (probably not the drive, cpu should easily handle it). See also: http://ubuntuforums.org/showthread.php?t=999145 though the original poster runs 32bit. After updating the driver to the recently released 9.10 (2:8.573-0ubuntu1) the problem seems to be gone. -- video lags in fullscreen with fglrx (ati) https://bugs.launchpad.net/bugs/231913 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs