GUI gone after monitor change
 

Suse 10.0, KDE, video card nvidia gforce

Everything worked fine with a SONY 17" CRT. I replaced it with a DCL LCD monitor (19") (model DCL9A+) and changed a few settings: in Control Panel -> Display, I changed the resolution to 1280x1024, size to 19". Under Display manufacturer, since it does not have DCL, I entered VESA.

When I boot now, I only get command line OS, no display.

What did I do wrong and how do I undo it?

Thanks for your help. Vlad

at the command line can you log in as your normal user? what happens/whats the output of 'startx'?

Yes, I can log in. Here is the output of 'startx':

xauth: creating new authority file /home/vlad/.serverauth.5665

X Window System Version 6.8.2
Release Date: 9 February 2005
X Protocol Version 11, Revision 0, Release 6.8.2
Build Operating System: SuSE Linux [ELF] SuSE
Current Operating System: Linux linux 2.6.13-15.7-default #1 Tue Nov 29 14:32:29 UTC 2005 i686
Build Date: 07 October 2005
Before reporting problems, check http://wiki.X.Org
to make sure that you have the latest version.
Module Loader present
Markers: (--) probed, (**) from config file, (==) default setting,
(++) from command line, (!!) notice, (II) informational,
(WW) warning, (EE) error, (NI) not implemented, (??) unknown.
(==) Log file: "/var/log/Xorg.0.log", Time: Mon Mar 27 01:25:04 2006
(==) Using config file: "/etc/X11/xorg.conf"

(EE) NV(0): No valid modes found
(EE) Screen(s) found, but none have a usable configuration.

Fatal server error:
no screens found

Please consult the The X.Org Foundation support
at http://wiki.X.Org
for help.
Please also check the log file at "/var/log/Xorg.0.log" for additional information.

XIO: fatal IO error 104 (Connection reset by peer) on X server ":0.0"
after 0 requests (0 known processed) with 0 events remaining.

did u use xorgconfig tool to setup the X server?

No, I don't know how to setup the X server.

at the console screen with no X server loaded:

type 'sudo su' to switch to root and enter your password

type 'xorgconfig' and enter.. it will guide you through a process to select all the settings needed for the X server to work properly with your hardware.

before running 'xorgconfig' command, youll need information about your hardware.

- regional layout for your keyboard (probably 'us')
- number of keys on your keyboard (probably 104 if a standard keyboard)

- type of mouse and how it connects to the motherboard

- type of video card (helpful when you select the driver)
- amount of memory on the card
- refresh rates and resolutions supported by the card

- type of monitor
- vertical and horizontal sync rates for the monitor (these are important and do NOT guess the values)
- resolutions supported

gather this information (search online or the manufacturer's documentation/website) before you run the command.

after you go through the setup, itll ask to save and overwrite the file, select yes. type 'exit' to become your normal user again (ie not root anymore). type 'startx' and it should load properly if you entered the correct information.

EDIT::
you can either do all of the above, or simply edit the text file and change only the monitor/display section, as you already have the mouse, keyboard, video card working properly (id assume).
after 'sudo su' type 'vi /etc/X11/xorg.conf' to edit the file. (if you dont know how to use the vi editor, then search for it and learn the basics, as it can be pretty elaborate)
scroll down to the monitor (or display?) section, should be near the very bottom of the file. change just the settings there that do not correspond to the real values that should be there. (again dont guess the vert/horz sync rates)

Thanks, nadroj, the monitor is back. Vlad