Hi,
I just made a fresh slackware 12.1 install
i tried : Xorg -configure, xorgconfig, xorgsetup, rm /etc/X11/xorg.conf then running startx.
All had the same results , Black screen then monitor goes
"no signal input".
And only reboot could help it.
I tried to install ATI drivers didnt worked too.
I have radeon 9250.
Ill post an error i find on Xorg.log
(EE) RADEON(0): V_BIOS address 0x2ede0 out of range
And ill post the whole Xorg.log in pastebin
http://pastebin.com/f4d3c0581
Hope someone can help me i cant figure this out.