I have had this problem before, (topic 63170. I jotted down the steps, but my thinking was sloppy and incomplete and I can't make sense of them now.
Problem: Reinstalled 2009.2 from .iso. Great, beautiful. Works fine, as always. Nineteen minutes and I'm running fine again. Synaptic update. 769 files, left it loading overnight. Reboot. Now I'm back to the black screen. It isn't even backlit, so my monitor doesn't come on. Alt + s doesn't restart, I have to force off with the power button.
List of jotted steps: F2 at boot screen. Add a 3 at end of bootline.
What bootline? How do I get to it?
While running livecd (the only way I could get anything but a black screen), I ran konsole as root and entered XFdrake --auto. I successfully set my resolution and tested. Rebooted without livecd. Blackscreen.
When given options such as F5, I chose drivers yes. I booted with Vesa, disabled 3D acceleration, things like that. I also reinstalled my video driver from livecd.
(pulling out hair) The black screen, always the black screen, it won't let you live, it won't let you breathe.
Sorry, channeled Mel Brooks for a second.
I found a post from DeBaas which has some other things I can try. Before I try them, I wanted to post this request.
Though Texstar and others have solved this problem already, I humbly request detailed steps telling me exactly what to do to get past this black screen. I'll write them down better this time, honest.
Even a link to the previous solution would help, since I couldn't find it after several varied keyword searches. Apparently, this was in the batch of my posts that were lost in a mass deletion mishap a few months ago.
As I'm booting my computer, knowing I'm gonna get the black screen, step one is...?
I'll be back later. I hope it won't be on livecd, in which case, I'll post what worked. (hardware details in sig. Resolution is 1024 X 600 @ 60Hz.)
Edit -- DeBaas's steps were ctrl alt F1 at black screen to get to a terminal screen. Still black, no backlight. Typing blind, I entered video. Still black. Ctrl alt F7 he says should get me "bacK" to the blackscreen, and ctrl alt backspace to get to the GUI logon. Still black.
I'm gonna run XFdrake --auto and reboot and keep trying.