I want to record my Desktop and use zoom function. I changed Zoom in shortcut to
<super>button5 and when I click Windows logo and scroll my mouse, it doesn't work. What I am doing wrong?
XServer interprets scrollwheel as extra mouse buttons; in Compiz, it's Button4 for Wheel Up and Button5 for Wheel Down - more details in Compiz wiki. This is for Compiz in Ubuntu 11.04, 11.10 may differ (although I doubt it).
I assume you have set up the shortcut using CompizConfig Settings Manager (
EDIT: The problem was that Compiz wasn't actually running (see the comments below). Otherwise there's nothing wrong with Compiz zoom plugin.