How to change gdm screen resolution?

Charlie Kravetz cjk at
Sun Feb 10 01:33:43 UTC 2008

On Sun, 2008-02-10 at 08:46 +0800, shadowkernel wrote:
> Hi,
> My default screen resolution is 1400x1050, and in gdm greeting screen, 
> the screen resolution is always 1024x768 (xfce and gnome sessions both 
> work OK). The fonts seems a little blur. My video card is Nvidia Quadro 
> NVS 140M, and I have installed the newest nvidia driver with version 
> 169. How to change the gdm settings to the LCD native resolution? I have 
> tried 'sudo dpkg-reconfigure gdm', but it does not work. By the way, can 
> anyone provide me with the boot sequences of Ubuntu? It seems that 
> Ubuntu is different from other distributions, as 'teinit' does not work. 
> I want to know what configuration files gdm reads. Any websites or pdf 
> files are welcomed. Thanks!
> Best regards
To change resolutions in Ubuntu 7.10, go to System, Administration,
Screens and Graphics. Alternatively, go to a terminal, type 

sudo dpkg-reconfigure -phigh xserver-xorg 

That should let you set up the drivers and resolution. Sometimes the
best method under 7.10 seems to be going to /etc/X11 and removing
xorg.conf and rebooting a couple of times. The system will then set up
the xorg.conf since it doesn't exist.

gdm reads the configuration files in /etc/gdm. The main file
being /etc/gdm/gdm.conf  Modifications made by you are stored in

Ubuntu uses Debian boot sequences; they have been covered many times in
this mailing list. You may want to check out the archives at

Most of the startup files are found in /etc/init.d and run
from /etc/rc?.d during the startup sequence. 

Much of this information is available is available in you system
under /usr/share/doc/...  Also, I found that by installing
debian-reference-en and reading, many of my own questions were answered
when I started using Ubuntu. 

If you need more information, please ask.

good luck,
Charlie Kravetz 
Linux Registered User Number 425914          []
Never let anyone steal your DREAM.           []

More information about the ubuntu-users mailing list