Comment 6 for bug 507837

I also have this problem. Apparently it's actually intended functionality, but I just find it annoying and stupid. I mean it's reasonable to only maximize to a single screen, but when resizing, it just refuses to do something that I explicitly request. That's just wrong. That being said, I would also like a "maximize across all screens" button sometimes.

Is anybody at ubuntu looking at this, or do we have to complain to compiz upstream?

To all subscribers with nvidia cards: Have you tried turning xinerama hints off? I remember that used to be possible in the nvidia drivers in the xorg.conf somehow. That way your window manager will not even know that you're runnning two screens, it will just think you have one big one with a weird geometry. That will of course break other things, but would probably work around this issue if it's imoprtant to you. I can't test it myself since I'm on ATI at the moment and don't know how to do it there.