I'm running compiz on 2 xsessions, 1 for each of my 2 monitors. And when I pull my mouse over to my second screen it works fine, but until I change which window is in focus, they keyboard still works on the first monitor.
This means that I have to change viewpoints to get my keyboard to work on my second screen, and then back again to my first screen. This happens every time, I've never got it to work without changing focus.
I have worked out it is a compiz problem as I am now running openbox on my second screen, and it works fine. I pull my mouse over to the other screen and the keyboard works as soon as focus goes to that screen.
I'm running Arch Linux fully up to date. Using an Nvidia 9500GT with 190.53 driver, and compiz 0.8.4 from the repositories. I only started using 2 screens so have no idea if this is a new issue or not.
If you need any more info, just ask and I'll give it.
Mass closure: This bug has been untouched for more than six years, and is not
obviously still valid. Please reopen this bug or file a new report if you continue to experience issues with current releases.