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007brendan
February 28th, 2011, 12:52 PM
Hi,
I'm trying to configure xorg.conf to correctly set the resolution of my screens. I'm using a matrox triplehead, so the monitor is a single 5040x1050 screen. Unfortunately, it's being incorrectly set to 3840x1024.

I've changed the metamodes values in xorg.conf to the correct resolution. I've even added a Modeline statement to the Monitor section, but it still keeps using the wrong resolution value. Not sure what to do.

Dutch70
February 28th, 2011, 01:38 PM
Copy & paste your xorg.conf here & someone will be better able to help you. Be sure to highlight it & put code tags around it with the # symbol in the toolbar.

007brendan
March 1st, 2011, 09:37 AM
Here's my xorg.conf. It's mostly autogenerated from the nvidia tool




# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 260.19.06 (buildd@yellow) Mon Oct 4 15:59:51 UTC 2010

Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"
# generated from default
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "kbd"
EndSection

Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Matrox"
HorizSync 31.5 - 80.0
VertRefresh 57.0 - 75.0
#Option "DPMS"
Modeline "5040x1050@60" 451.27 5040 5072 6784 6816 1050 1071 1081 1103
#Modeline "5040x1050@59" 441.28 5040 5072 6744 6776 1050 1071 1081 1103
#Modeline "5040x1050@57" 421.62 5040 5072 6672 6704 1050 1071 1081 1103
EndSection

Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce 9800 GTX+"
EndSection

Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "0"
Option "metamodes" "5040x1050"
SubSection "Display"
Depth 24
EndSubSection
EndSection

007brendan
March 2nd, 2011, 11:37 PM
bump

munzli
March 28th, 2011, 06:13 PM
are you using a matrox triplehead2go adapter with an nVidia graphicscard in your PC?

instead of a modeline try a simple "modes" in your screen section:


Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "0"
# Option "metamodes" "5040x1050"
SubSection "Display"
Depth 24
Modes "5040x1050"
EndSubSection
EndSection