Video problems

[cwgordon]

I installed 9.04 Ubuntu on a machine I built last year, and it will not give me the full capability of my video card or monitor. They both have the capability of 1280x1024, but the best it gives me is 960x600.

This is from lspci:
VGA compatible controller: Silicon Integrated Systems [SiS] 661/741/760 PCI/AGP or 662/761Gx PCIE VGA Display Adapter (rev 03)

I'd appreciate any help.

Thanks

[gamblor01]

It could be that something is just incorrectly configured in your xorg.conf file...can you post the contents of /etc/X11/xorg.conf?

[cwgordon]

# 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.
#
# Note that some configuration settings that could be done previously
# in this file, now are automatically configured by the server and settings
# here are ignored.
#
# 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 "Device"
Identifier "Configured Video Device"
EndSection

Section "Monitor"
Identifier "Configured Monitor"
EndSection

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

I tried using the sudo dpkg-reconfigure -phigh xserver-xorg command, but nothing changed.

[deathadder]

Sounds like Ubuntu isn't detecting the vert/horz rates for your monitor correctly. Have a look through your monitors documentation for the vertical and horizontal rates and update the Monitor section of your Xorg config file like below.

Section "Monitor"
Identifier "CM752ET"
HorizSync 31-101
VertRefresh 60-160
EndSection


[Edit]
There's probably a GUI tool to do this so have a look around the system menu and Ubuntu wiki if your more comfortable using those :)