I don't get the horizontal lines and all that jazz, but occasionally, my laptop screen will look black, but there's actually a really faint image of what's on the screen (you have to really strain and look super close to make it out).
The problem stays if I reboot with the AC adapter plugged in but disappears if I reboot without the AC plugged in.
This isn't your problem exactly, but it seems similar. Have you tried rebooting without your laptop plugged in? Reboot it, give it a minute or so and then plug it in... seems to work for me but I'm not sure why!
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