https://bugs.kde.org/show_bug.cgi?id=373268
--- Comment #4 from Curtis Seizert <cseiz...@gmail.com> ---
What I have set up at the moment is one screen that is actually connected to
two displays and one screen that is just a dummy. This is so that I can
overclock my graphics card that is not driving a display.
When I disconnect one of my monitors, this does not resolve the problem, but if
I comment out the relevant sections of my xorg.conf file (see below), this does
solve the problem. Unfortunately, it also makes me unable to overclock my
second GPU, which I would really like to be able to do.
Is there a way to specify which screen gets vsynced? That would presumably
solve my problem and allow me to overclock my second GPU as well.
Below is the xorg.conf file that results in no tearing. If I remove the
comments, there is tearing.
xorg.conf:
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
# Screen "Screen1"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
Option "Xinerama" "0"
EndSection
Section "Files"
EndSection
Section "Module"
Load "dbe"
Load "extmod"
Load "type1"
Load "freetype"
Load "glx"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/psaux"
Option "Emulate3Buttons" "no"
Option "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "LG Electronics LG Ultra HD"
HorizSync 30.0 - 135.0
VertRefresh 56.0 - 61.0
Option "DPMS"
EndSection
Section "Monitor"
Identifier "Monitor1"
VendorName "Unknown"
ModelName "LG Electronics LG Ultra HD"
HorizSync 30.0 - 135.0
VertRefresh 56.0 - 61.0
Option "DPMS"
EndSection
#Section "Monitor"
# Identifier "Monitor2"
#EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 1070"
BusID "PCI:3:0:0"
Option "UseEdidDpi" "FALSE"
Option "DPI" "144x144"
EndSection
Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 1080"
BusID "PCI:4:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "Coolbits" "12"
Option "Stereo" "0"
Option "nvidiaXineramaInfoOrder" "DFP-4"
Option "metamodes" "DP-0: nvidia-auto-select +3840+0, DP-2:
nvidia-auto-select +0+0"
Option "SLI" "Off"
Option "MultiGPU" "Off"
Option "BaseMosaic" "off"
SubSection "Display"
Depth 24
EndSubSection
EndSection
#Section "Screen"
# Identifier "Screen1"
# Device "Device1"
# Monitor "Monitor2"
# Option "Coolbits" "12"
#EndSection
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