Slackware :: Vertical Flashing Lines At Start - Not Booting

I installed the slack 13 in an old Toshiba Qosmio F10, and everything was ok...but then,like 2 or 3 days after,I got a display problem at boot time: the screen is flashing, in vertical lines,so I read 2 letters,and then the next 2 are flashing. And it can't boot. 'Loading the kernel' is the last message.

I tried booting from the slack cd, the huge.s, but I got the same.

The strange is that if I use an old (very old) live cd, Kurumim 4.0, a dead Debian-based Brazilian live-cd, it boots. And then I have the vertical lines in graphic mode, but the notebook works.

I think that this is a hardware problem, but since it works with an old debian livecd,I suppose it should also be bootable with Slack.

EDITED: Ok,I tried Ubuntu and it couldn't boot,but eith the 'grapfical safe mode' it booted.

Since I can't believe that even Ubuntu would boot, but not the Slack, I tried

Quote:

# VESA frame buffer console @ 640x480x256
vga=769

and it is working...so the problem must be really hardware, the graphic card..Now I will try some others graphic definitions to see which one is the best