Computer: Compaq Presario V6000

When I shut down, my screen looks like it's about to eat itself with a scrambled screen of colored lines that shake and shimmy all about. The computer shuts down, but I don't even have the benefit of strange error messages as detailed in the first post of this thread: http://ubuntuforums.org/showthread.php?t=772733&page=4

I've tried applying the solution detailed in post #13 in that thread, but it has no effect at all.

Today at my office, the laptop went into hibernate, and when I tried to wake it up, all I got was the scrambled screen again. I had to manually power it down.

I've finally found a distribution that allows me to easily use my lousy on-board Broadcom 43.xx and I have this weird crap...

Can anyone please help me with this? I'd really appreciate it.