Hi there
I am new in this forum and I am here for some questions I have.
First of one: I have installed Debian Squeeze installed all I need to have my desktop (kde) working, but after loading all necessary for that purpose when start 'kdm' my screen become unreadable.
Many verticals lines blinking.
I can't do anything and every time I want to reboot I am pushed in kdm (as default desktop manager). I don't now how I can manage this problem and I suppose all depends from my graphic card (nvidia 6800GS ),

Any help?

thank you.

Hya,

I remember that I ran into similar problem in the past.

If you can ssh in to that machine, you can kill kdm without much trouble.

I guess that ctl-alt-BS does not help much, however, it may kill kdm.

If you still have media which you used to install Debian, use that one to boot, then escape to shell, do your necessary job.

Happy Penguins!

Welcome to LQ.
How did you do this? What was the "all necessary" of which you speak?

Do you have other DMs installed?

ctrl+alt+F1 - should get you a text login.

When you do get to a text login, take a look at /var/log/Xorg.0.log --chances are that X is not starting correctly because you need to install a driver for your video card.

Also look at /etc/X11/xorg.conf to see what driver is being specified. One thing to try is specifying the "vesa" driver to see if that gets you running.
The relevant section of xorg.conf will look something like this:

I did this:

• aptitude update
• aptitude safe-upgrade
• aptitude install xorg
• aptitude install kdm

Therefore I was pushed to choose one desktop manager and debian take me up to kdm, but no way
Sorry, what is it?

Yes, I have thoungt it was this problem, but time ago when I got to use debian the installer take me into the comnfiguration file for X server. Now?
I have saved one file from my previous installation. Coul I paste it into te new one? Or is better to rename the original file e create a newone with these lines?

--------------------------
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 1.0 (buildmeister@builder58) Thu Jul 17 18:39:00 PDT 2008

# xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by dexconf, the Debian X Configuration tool, using
# values from the debconf database.
#
# Edit this file with caution, and see the xorg.conf manual page.
# (Type "man xorg.conf" at the shell prompt.)
#
# This file is automatically updated on xserver-xorg package upgrades *only*
# if it has not been modified since the last upgrade of the xserver-xorg
# package.
#
# If you have edited this file but would like it to be automatically updated
# again, run the following command:
# sudo dpkg-reconfigure -phigh xserver-xorg

Section "ServerLayout"
Identifier "Default Layout"
Screen "Default Screen" 0 0
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
EndSection

Section "Files"
FontPath "/usr/local/share/fonts"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc101"
Option "XkbLayout" "it"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "Emulate3Buttons" "true"
EndSection

Section "Monitor"
Identifier "Sony CPD-220AS"
HorizSync 30.0 - 70.0
VertRefresh 50.0 - 120.0
Option "DPMS"
EndSection

Section "Device"
Identifier "GeForce 6800 GS"
Driver "nvidia"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "GeForce 6800 GS"
Monitor "Sony CPD-220AS"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1024x768"
EndSubSection
EndSection
---------------------------