My xorg.conf:
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 1.0 (pbuilder@c203) Tue May 18 07:56:38 UTC 2010
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" 1600 460
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
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"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "HP LP2065"
HorizSync 30.0 - 92.0
VertRefresh 48.0 - 85.0
Option "DPMS"
EndSection
Section "Monitor"
Identifier "Monitor1"
VendorName "Unknown"
ModelName "HP LP2065"
HorizSync 30.0 - 92.0
VertRefresh 48.0 - 85.0
EndSection
# PowerMizer settings taken from
linux.aldeby.org/nvidia-powermizer-powersaving.html
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "Quadro NVS 295"
BusID "PCI:2:0:0"
Option "RegistryDwords" "PowerMizerEnable=0x1; PerfLevelSrc=0x2222;
PowerMizerLevel=0x3; PowerMizerDefault=0x3; PowerMizerDefaultAC=0x3"
Screen 0
EndSection
Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "Quadro NVS 295"
BusID "PCI:2:0:0"
Option "RegistryDwords" "PowerMizerEnable=0x1; PerfLevelSrc=0x2222;
PowerMizerLevel=0x3; PowerMizerDefault=0x3; PowerMizerDefaultAC=0x3"
Screen 1
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "TwinView" "0"
Option "metamodes" "DFP-0: nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Device1"
Monitor "Monitor1"
DefaultDepth 24
Option "TwinView" "0"
Option "metamodes" "DFP-1: nvidia-auto-select +0+0"
SubSection "Display"
Depth 24
EndSubSection
EndSection
The PowerMizer settings were an early attempt to fix the problem as other
people at my office with similar hardware had seen problems with the defaults.
They have not altered the behaviour of my problem at all. No one else here
seems to have this bug but few other people have two displays connected to
there linux machines; before I had two screens connected I did not see this
problem.
