Black Screen

I am booting XP and Opensuse 11.4 all was ok until I changed my old monitor for a widescreen monitor, Xp works ok but when I select Opensuse from the menu it just boots to a black screen

Any help most appreciated

Boot in runlevel 3 by appending “3” to the boot options. It should be OK. Log in as root and look what you have in the monitor section of /etc/X11/xorg.conf (if this file is present) and in the file /etc/X11/xorg.conf.d/50-monitor.conf. If there are any modlines there, you should first delete them. If the value of HorizSync and VertRefesh are specified, you should change these values - or first try to comment them out.

Adding ‘nomodeset’ to the boot options might help too - depending on your graphic card (that you didn’t mention).

I can get to this file with a live DVD

50-monitor.conf contents below

Section “Monitor”
Identifier “Default Monitor”

If your monitor doesn’t support DDC you may override the

defaults here

HorizSync 28-85
VertRefresh 50-100
Option “PreferredMode” “1280x1024”

Add your mode lines here, use e.g the cvt tool

EndSection

The “PreferredMode” option is definitely wrong. Remove this line! Comment out the two others or replace the HorizSync and VertRefresh values with the ones of your monitor (they should be in the manual under specifications). Notice that in most cases, the monitor will send these infos to the driver, so they are normally not needed (but should not be wrong if specified here).