Hello I am trying to apply mosaic across 4 Q900A Samsung TVs, however, I am facing many issues that I cannot resolve.
Here is the X11/xorg.conf file:
nvidia-settings: X configuration file generated by nvidia-settings
nvidia-settings: version 510.47.03
Section “ServerLayout”
Identifier “Layout0”
Screen 0 “Screen0” 0 0
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”
# 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 “Samsung Q900A”
HorizSync 15.0 - 255.0
VertRefresh 24.0 - 120.0
Option “DPMS”
EndSection
Section “Device”
Identifier “Device0”
Driver “nvidia”
VendorName “NVIDIA Corporation”
BoardName “NVIDIA RTX A6000”
BusID “PCI:129:0:0”
EndSection
Section “Screen”
Identifier “Screen0”
Device “Device0”
Monitor “Monitor0”
DefaultDepth 24
Option “Stereo” “0”
Option “MetaModes” “GPU-0.DFP-0: 1920x1080 +0+0, GPU-0.DFP-1: 1920x1080 +1920+0, GPU-1.DFP-0: 1920x1080 +0+1080, GPU-1.DFP-1: 1920x1080 +1920+1080”
Option “SLI” “MOSAIC”
Option “MultiGPU” “Off”
Option “nvidiaXineramaInfo” “FALSE”
SubSection “Display”
Depth 24
EndSubSection
EndSection
Section “Extensions”
Option “Composite” “Disable”
EndSection
As soon as I enable just mosaic and go for a restart with the 4 screens plugged in there is an issue where the server wont boot at all. I have tried countless combinations, tried suggestions such as turning off IOMMU. I also have an issue with linux where I cannot apply 8k resolution to one screen with just one plugged in. This feature works in windows but not linux.
To make the machine into a bootable state again I have to delete the /etc/X11/xorg.conf file, otherwise it will not boot at all. I am not sure if there are some logs I can access via going into recovery mode, if there are please can someone point me in the right direction for this.