I've reported this bug upstream and against the X.org Radeon driver: https://bugs.freedesktop.org/show_bug.cgi?id=27824
Looks like it might be a known issue. ** Bug watch added: freedesktop.org Bugzilla #27824 http://bugs.freedesktop.org/show_bug.cgi?id=27824 ** Summary changed: - [Legacy Radeon cards] Desktop effects/compiz: dim display when zooming + [Legacy Radeon cards] Desktop effects/compiz: display brightness fluctuation with zoom, workspace switch or Expo -- [Legacy Radeon cards] Desktop effects/compiz: display brightness fluctuation with zoom, workspace switch or Expo https://bugs.launchpad.net/bugs/539163 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
