I've got the same problem using Kubuntu 6.06. Everything works fin until I install the restricted nvidia drivers for 3D support. Initially I followed the instructions here: https://help.ubuntu.com/community/BinaryDriverHowto/Nvidia. As soon as I restarted the xserver I went from login screen, to black screen back to login screen.
I then tried using this method: sudo apt-get install nvidia-glx linux-restricted-modules-`uname -r` sudo cp /etc/X11/xorg.conf /etc/X11/xorg.conf_backup sudo nvidia-xconfig This appeared to work, but gave me a fixed screen resolution of 1400x1050 (my monitors maximum resolution is 1152x768) As soon as I edited the xorg.conf file with the correct resolutions and restarted, I got the same error. I'm using a samsung centrino laptop with a NVIDIA FX G0 5200 64MB variation 1Gb RAM, 1.6GHz centrino processor. xorg.conf file below: # nvidia-xconfig: X configuration file generated by nvidia-xconfig # nvidia-xconfig: version 1.0 ([EMAIL PROTECTED]) Mon May 15 13:23:42 PDT 2006 # /etc/X11/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 /etc/X11/xorg.conf manual page. # (Type "man /etc/X11/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" InputDevice "stylus" "SendCoreEvents" InputDevice "cursor" "SendCoreEvents" InputDevice "eraser" "SendCoreEvents" InputDevice "Synaptics Touchpad" EndSection Section "Files" # path to defoma fonts FontPath "/usr/share/X11/fonts/misc" FontPath "/usr/share/X11/fonts/cyrillic" FontPath "/usr/share/X11/fonts/100dpi/:unscaled" FontPath "/usr/share/X11/fonts/75dpi/:unscaled" FontPath "/usr/share/X11/fonts/Type1" FontPath "/usr/share/X11/fonts/100dpi" FontPath "/usr/share/X11/fonts/75dpi" FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType" EndSection Section "Module" Load "i2c" Load "bitmap" Load "ddc" Load "extmod" Load "freetype" Load "glx" Load "int10" Load "type1" Load "vbe" EndSection Section "InputDevice" Identifier "Generic Keyboard" Driver "kbd" Option "CoreKeyboard" Option "XkbRules" "xorg" Option "XkbModel" "pc105" Option "XkbLayout" "gb" EndSection Section "InputDevice" Identifier "Configured Mouse" Driver "mouse" Option "CorePointer" Option "Device" "/dev/input/mice" Option "Protocol" "ExplorerPS/2" Option "ZAxisMapping" "4 5" Option "Emulate3Buttons" "true" EndSection Section "InputDevice" Identifier "Synaptics Touchpad" Driver "synaptics" Option "SendCoreEvents" "true" Option "Device" "/dev/psaux" Option "Protocol" "auto-dev" Option "HorizScrollDelta" "0" EndSection Section "InputDevice" # /dev/input/event # for USB Identifier "stylus" Driver "wacom" Option "Device" "/dev/wacom" # Change to Option "Type" "stylus" Option "ForceDevice" "ISDV4" # Tablet PC ONLY EndSection Section "InputDevice" # /dev/input/event # for USB Identifier "eraser" Driver "wacom" Option "Device" "/dev/wacom" # Change to Option "Type" "eraser" Option "ForceDevice" "ISDV4" # Tablet PC ONLY EndSection Section "InputDevice" # /dev/input/event # for USB Identifier "cursor" Driver "wacom" Option "Device" "/dev/wacom" # Change to Option "Type" "cursor" Option "ForceDevice" "ISDV4" # Tablet PC ONLY EndSection Section "Monitor" Identifier "Generic Monitor" HorizSync 28.0 - 70.0 VertRefresh 43.0 - 60.0 Option "DPMS" EndSection Section "Device" Identifier "NVIDIA Corporation NV34M [GeForce FX Go5200 32M/64M]" Driver "nvidia" EndSection Section "Screen" Identifier "Default Screen" Device "NVIDIA Corporation NV34M [GeForce FX Go5200 32M/64M]" Monitor "Generic Monitor" DefaultDepth 16 SubSection "Display" Depth 1 Modes "1400x1050" EndSubSection SubSection "Display" Depth 4 Modes "1400x1050" EndSubSection SubSection "Display" Depth 8 Modes "1400x1050" EndSubSection SubSection "Display" Depth 15 Modes "1400x1050" EndSubSection SubSection "Display" Depth 16 Modes "1400x1050" EndSubSection SubSection "Display" Depth 24 Modes "1400x1050" EndSubSection EndSection -- X / KDE fails to start https://launchpad.net/bugs/19382 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs