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View Full Version : [ubuntu] Identical screens have different resolutions in dual



peterzh
September 14th, 2009, 08:13 PM
I'm running Jaunty

I have two identical 1280x1024 (max) flatscreens that, until a recent update, were working perfectly in dual setup. System>Preferences>Display showed the two monitors, and merged them to a virtual display of 2560x1024

However now the display manager seems to think my second screen is a widescreen, and no longer has the 1280x1024 option, but instead has a 16:9 option of 1360x768 (and below that: a 4:3 option of 1152x654).

When I try doing:

xrandr --output DVI-0 --mode 1280x1024
it responds with:

xrandr: cannot find mode 1280x1024

(DVI-0 is the second screen)

How can I fix this? any help would be appreciated.

Xorg.conf:

# 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 "Monitor"
Identifier "Configured Monitor"
EndSection

Section "Screen"
Identifier "Default Screen"
Monitor "Configured Monitor"
Device "Configured Video Device"
SubSection "Display"
Virtual 2640 1024
EndSubSection
EndSection

Section "Device"
Identifier "Configured Video Device"
EndSection