Comment 185 for bug 729979

Use Nvidia 319.23 (xorg-edgers) with the Compiz experimental ppa in 13.04 (though I don't think this ppa is essential and sometimes it does break Unity, so I have stopped updating from it after a while) Here are how things stand on my system

I) If all windows are non minimized, then no black window switching either with alt-tab or the shift switcher.

2) if some windows are minimized but there is only one isntance for such applications (e.g no two instances of evince for two pdf documents), then no black windows switching with alt-tab

3) if the minized windows (may have more than one instances of the same applications) restore to non maximized windows than no black windows using the alt-tab switcher.

4) Always get black windows with shift switcher if some applications are minimized (regardless of how many instances are in use)

5) Get black windows with alt-tab for applications with more than one instances in use and minimized AND only for those instances that restore to maximized windows.

6) One way to avoid ALL black windows would be to enable the scale addon in ccsm and use a hot corner to pick windows (i.e using Unity like Gnome Shell) There is no black window under any scenario.

So, if I am switching Windows with the scale addon (like using gnome-shell) I am able to avoild black windows al together and even if I get a black window say in using alt-tab in scenario 5 moving the cursor to the hot corner to refocus the open black window would make it normal again.

Since it doesn't look like this bug will be fixed this is the best I can do. By using mostly the hot corner I have restored normal work flow pretty much and haven't seen any black window for quite some time.