Do what you think is best, I really tried to put effort into this one and I think you are wrong (BTW I switched to a different distribution, so I'm not affected by the bug at the moment).
As a side note, I think you should not be so eager to close bugs without substantial evidence of them being invalid or duplicates. For example, many bugs that are marked as a duplicate for this one have different symptoms. I understand that they might have the same root cause, but no evidence is provided so far. There is no crash involved with this bug, while lots of fullscreen crash bugs are reported as duplicate for it. In this case, it simply switches back to windowed mode, no crash whatsoever.
Why do you think that? I just told you that I tried with another window manager and it didn't work. So it's not a Unity/Compiz bug.
Well, I tried with xfce on this same system, and I had the same issue.
Yes, take a look at https://mojang.atlassian.net/browse/MC-2067 (although I disagree that it's a duplicate; I think the person who marked it as such stopped the word "black" and didn't read it all).
Either way, there is clearly a problem.
I also have this issue, it is the same ever since Alpha 1.2_01 (that's when I started playing).
I'm using Unity.
No, this is not a duplicate of the other one, and as I already said, updating lwjgl does not solve the issue and neither does using the Oracle JVM.
I understand that you want to close as many bugs as possible, but please, be reasonable. Can we get this reopened, please?
Yes, the driver is up-to date. I just tried Oracle java, and it does not work (just like in the AskUbuntu thread).
Also, even if that was the problem, it would make sense to start supporting OpenJDK, since it is the official reference implementation from Java7 and up (see: https://blogs.oracle.com/henrik/entry/moving_to_openjdk_as_the). Also, it is the default runtime in Ubuntu, installing Oracle Java is not very straightforward for an average user.
This IS a bug report. There is no JVM crash, read the BUG description. Please.