fglrx ATI Driver - Display Switch Off During Boot

[gallifrey]

Hello all,
I have just installed an ATI Radeon HD 2600 Pro (AGP) in my tower. I installed the fglrx driver via Jockey, and ran 'aticonfig --initial', with no errors.
Now, when I boot, it gets as far as the plymouth splash screen, and the display turns off, and the power light flashes on and off. If I boot in failsafe and use the backed up confguration, it works fine again. The monitor I am using is quite an old one - a 17" CRT with maximum resolution of 1152x864. I do not know the vendor.

Here is the output of xorg.conf

Section "ServerLayout"
Identifier "aticonfig Layout"
Screen 0 "aticonfig-Screen[0]-0" 0 0
EndSection

Section "Module"
load "dri"
EndSection

Section "Monitor"
Identifier "aticonfig-Monitor[0]-0"
Option "VendorName" "ATI Proprietary Driver"
Option "ModelName" "Generic Autodetecting Monitor"
Option "DPMS" "true"
EndSection

Section "Device"
Identifier "aticonfig-Device[0]-0"
Driver "fglrx"
BusID "PCI:1:0:0"
EndSection

Section "Screen"
Identifier "aticonfig-Screen[0]-0"
Device "aticonfig-Device[0]-0"
Monitor "aticonfig-Monitor[0]-0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection

Any help would be gratefully appreciated

EDIT: fglrxinfo and glxinfo both give 'segmentation fault'. I have looked up this problem, but it seems o be a broad-spectrum thing.

[gallifrey]

I figured it out from /var/log/xorg.0.log.

The card was tying to set my monitor to a resolution of 1600x1200 during boot, which it couldn't handle.

I just changed the resolution in xorg.conf.