Black/White screen at Linux start

Desde Hardy a los que tenemos tarjetas nVidia (vale para toda la serie 5X y 6X), Ubuntu no ha hecho mas que traernos dolores de cabeza. Entre NVIDIA y Canonical se tiran la pelota entre sí, aunque para ser honesto les creo mas a los de NVIDIA, porque con otras distros (Mandriva, Fedora, Suse) no he tenido ni el menor problema.
Y despues de buscar miles de soluciones, algunas muy complejas, de esas donde se trabaja "al limite", y donde de hecho el resultado fue el quiebre completo del servidor gráfico, la unica que mas o menos me ha permitido ir tirando para no cambiarme de distro es copiar el xorg.conf de Feisty o Gutsy, y despues hacerle los retoques necesarios.
Lo podes hacer imprimiendo el xorg.conf desde una sesión live o copiandolo tras la instalacion en una maquina virtual.
El problema aparentemente es que hay algunos pequeños modulos del kernel que son incompatibles con los drivers de esta placa, y la solucion mas aconsejable es la modificacion del xorg.conf. (comentario de pablo0469)
Ubuntu 10.04 and Nvidia cards

sudo gedit /var/log/nvidia-installer.log

Following command will purge the new default nouveau 2D video driver from your system so you won't have low resolution problem at the boot time anymore.Better than blacklist it.But be sure before you have current proprietary driver installed too:
sudo apt-get remove --purge xserver-xorg-video-nouveau

ubuntu-white-screen-of-death

Black Screen While Starting X window 

Step # 1: Reset blank X screenFirst, get out of Blank screen by pressing combination of keys Ctrl+Alt+Backspace. If this fails, reboot system.
Step # 2: Reconfigure X server displayAt shell, prompt type the following command to reconfigure X display.

If you are using Red Hat /Fedora / CentOS Linux type command:

# redhat-config-xfree86If you are using Debian Linux type command:

# dpkg-reconfigure xserver-xfree86OR login as the root user and type command:

# XFree86 -configure

Step # 3: Test new setup

Type startx to test your new settings:

# startxOR if you used XFree86 –configure command to reconfigure X, then test it with following command:

# XFree86 -xf86config /etc/X11/XF86Config.new

---------------------------------------------

Correcting screen resolutions (leer)
Ver modos de resolución y frecuencia vertical

xrandr

Code:

gtf 1024 768 60

changes xorg.conf at the following lines
 
Modeline       "1024x768_60.00" muchos números
Option "PreferredMode" "1024x768_60.00"
---------------------------------------------

xorg.conf  for 

two monitors

max Vertical Freq is not set @74 Hz

sudo nvidia-settings
---------------------------------------------
sudo apt-get install build-essential
sudo dpkg-reconfigure xserver-xorg
 and set the following options:
- Kernel framebuffer device NO (in your xorg.conf this option should appear as "false")
- 16 bit (instead of the default 24-bit selection)
Restart X and see if you have any improvement.
----------------------
install the new Nvidia drivers using these steps:
0. sudo apt-get remove nvidia*
1. Ctrl-Alt-F1
2. sudo /etc/init.d/gdm stop
3. sudo su
4. sh ./NVIDIA-Linux-x86-173.14.05-pkg1.run
5. go through all the prompts
6. restart
nVidia thread about the new drivers:
http://www.nvnews.net/vbulletin/showthread.php?t=113919
----------------------------------------------------------
Read:
Nvidia Geforce 8400gs - Page 3‎
Xorg FHD2400 & 8400 GS Nvidia‎ 
nvidia-settings manager writing bad xorg.conf file
distrowatch.com/weekly.php?is...070903


nVidia GForce 8400GS xorg.conf settings
Identifier "Generic Monitor"
VendorName "Plug 'n' Play"
ModelName "Plug 'n' Play"
Gamma 1
ModeLine "1920x1200@60" 193.2 1920 2048 2256 2592 1200 1201 1204 1242 -hsync +vsync
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Gateway FHD2400"
HorizSync 31.0 - 83.0
VertRefresh 56.0 - 76.0
EndSection

Section "Device"
Identifier "nVidia Corporation G80 [GeForce 8400 GS]"
Driver "nvidia"
BoardName "nv"
BusID "PCI:4:0:0"
Screen 0
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 8400 GS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "nVidia Corporation G80 [GeForce 8400 GS]"
Monitor "Generic Monitor"
DefaultDepth 24
SubSection "Display"
Virtual 1920 1200
Depth 24
Modes "1920x1200@60"
EndSubSection
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "0"
Option "metamodes" "1920x1200_60 +0+0"
EndSection
-------------------------------
another for 7900GS 
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 1.0 (buildd@vernadsky) Tue Mar 4 20:24:34 UTC 2008

# xorg.conf (X.Org 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 0 "Screen0" 0 0
EndSection

Section "Module"
Load "glx"
EndSection

Section "ServerFlags"
Option "Xinerama" "0"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "gb"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Philips PHL 20PF5320"
HorizSync 31.0 - 60.0
VertRefresh 47.0 - 75.0
EndSection

Section "Device"
Identifier "Configured Video Device"
Driver "nvidia"
Option "NoLogo" "True"
EndSection

Section "Device"
Identifier "Videocard0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 7900 GS"
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Configured Video Device"
Monitor "Configured Monitor"
DefaultDepth 24
EndSection

Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "0"
Option "metamodes" "DFP: 1024x768_70 +0+0; DFP: 1024x768 +0+0"
EndSection

Lucid Lynx and NVIDIA video cards

Here is my xorg.conf, maybe it will help u
Fuente

Code:

gksudo nvidia-settings

Code:

sudo gedit /etc/X11/xorg.conf

y en el metamode agregar la frecuencia ( anchoxalto_frecuencia) ej: 1280x1024_85
www.ubuntu-es.org/node/117128
vaio-f11-linux EDID configuration
announcement from nVidia:
nvnews.net/vbulletin/announcement.php?a=39