Call me crazy, but in my case the severe lag on moving windows shows up *only* when Firefox >= v4.0 is running.
In fact, the lag is proportional to the number of Firefox windows open (but not to the number of tabs). The Firefox window state and which workspace it is in relative to the window being dragged does not matter. Reproducible with about:blank and in Firefox safe-mode (no add-ins). No other application (tried a few: from Chrome open to GIMP) causes any lag regardless of number of windows, also Firefox v3.6 does *not* cause the lag either (so I downgraded for now). Yes, it sounds crazy -- but that's it: the fewer Firefox windows open, the less lag, and no lag when Firefox is not running! Why? My only wild guess is: Firefox 4.0 is the first one that came with Unity integration (however, I have the "menu bar integration with Unity" disabled... and Unity turned off). In any case, its tab control is noticeably different from v3.6 (and feels like it comes from outside of Firefox -- pure speculation). It might not be Firefox's fault, but it does something to bring up the problem wherever this problem is. Different mice (Thinkpad's trackpad, trackpoint, external Logitech wireless) exhibit noticeably different degrees of lag -- so it does seem mouse related in some way. Setting mousepoll=10 (and confirming it had that value after reboot) makes no difference (for the usb mouse). Killing unity-window-decorator and moving window using context menu's Move also lags in same way. Playing with above-mentioned params in compiz config makes no difference. Restarting compiz makes no difference -- lag disappears after Firefox is closed *without* any restart. System: Ubuntu Natty, Radeon X1400 with open source drivers gnome-panel+compiz (Unity turned off) All other actions in compiz e.g. cube are smooth regardless of whether Firefox is running, although when Firefox is running, there is a lag when rotation is initiated. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/764330 Title: Move window annoying slow with compiz To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/764330/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
