"Do you suggest it's compiz bug instead of cairo?" I'm pretty sure, since the behaviour shown by Metacity and Compiz are totally different for me (and even different than the one of Bambang). about ccsm, I have the plug-in "Show desktop" activated, and Unity is disabled). by the way, the working of this plug-in is quite weird: if I show the desktop, the windows are not minimized, but moved in the corners, and only for the current desktop (ok, why not). But switching to another desktop will deactivate the show-desktop mode (sounds strange to me). Also, in show-desktop mode, alt+tab doesn't display all the windows of the current desktop (only a few). so I would say this plug-in is a bit broken... the "fade-to-desktop" plug-in works in a more usual way (windows of all desktops are minimized, alt+tab works correctly). still, showing a window doesn't disable the show-desktop mode, you have to re-click on the icon (which sounds ok to me). 2014-05-09 13:08 GMT+02:00 Matthieu Baerts