I think I may have found something important. To see that effect too, please follow these steps:
1) Install these packages: sudo apt-get install compiz-plugins compizconfig-settings-manager. 2) Launch CompizConfig Settings Manager, search for "Show Repaint" plugin and switch it on. Hit the <Alt><Super>R combo. 3) Now all the areas which are redrawed with last screen update should be rendered with another transparent color overlay. Try move some windows around and open/close menus to see how it works. Notice only "damaged" regions are repainted. If the colors are changing too fast for You, try to lower the framerate in the "Composite" plugin. 10 FPS should be fine. 4) Open the Dash and watch as the whole screen (!) is repainted with every (!) update; not only during the opening fade in animation, but actually all the time until dash is closed again. In fact even a single pixel that changed in the top panel, e.g. seconds in datetime indicator or indicator-multiload forces the whole screen repaint too. 5) Hit <Alt><Super>R to again to end Your colorful bad trip. (Raring amd64 + Mobility Radeon HD 3450/3470 + fglrx) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/814833 Title: Opening the dash is very slow and laggy To manage notifications about this bug go to: https://bugs.launchpad.net/unity/+bug/814833/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
