I have a MacBook Pro and when I try to use my computer after it auto-dims the display fails to brighten. If I try use the brightness controls it doesn't affect anything, but I can see that it's registering (not that this should be affecting the auto-dim). However, after somewhere between 5 and 30 seconds the display comes back to normal. Also, it doesn't do this every time, but it does it the majority of the time. If anyone has any explanation for this/recommendation for what to look at, I would greatly appreciate it.