I upgraded my ubuntu from 10.10 to 11.04 and since that day I have been facing issues with Dual Monitor in Ubuntu. When I connect my second monitor during boot time, everything works fine.

But when I use my laptop and try to connect a monitor when I am running Ubuntu, I face a weird black screen issue. To see what I mean, following is a screenshot of the same.

Here are the problems that happen

1. Desktop background goes away
2. As you can see on the left hand side of the desktop, the right and top portions are black
3. The usual buttons - power button, mail, volumne etc., on the top panel do not work as expected
4. Plus it suddenly crashses at times.

And a lot of n other issues associated with this. Is there any patch/release that has happened for these bugs or should I report it anywhere?

Help needed.