I know this question has been asked before but I trully don't understand how to make it work on my computer too.
I have two video cards
lspci | grep VGA
01:00.0 VGA compatible controller: NVIDIA Corporation GF110 [GeForce GTX 570 Rev. 2] (rev a1) 02:00.0 VGA compatible controller: NVIDIA Corporation GT218 [GeForce 210] (rev a2)
I have 4 monitors plugged in the 2 video cards. I have dual boot (the windows is working with all 4 monitors and it took me like 2-3 minutes to make it working)
Nvidia X Server Settings detects me the four monitors but it requires me to create 2 separate X Screens (namely X Screen 1 and X Screen 2). By default, it shows me the 2 monitors from the 1st video card correctly, and I can only see a black screen with an X cursor on the 3-4 monitor from the 2nd video card. Moreover when I run the xrandr
xrandr has only shown me the first 2 monitors. I have never been able to make xrandr show me the 3 and 4th monitor. Never. I think there is a major bug.
This is the xorg.conf
# nvidia-settings: X configuration file generated by nvidia-settings # nvidia-settings: version 375.26 (buildmeister@vm-ubuntu1604-x64-001) Thu Dec 8 19:58:55 PST 2016 Section "ServerLayout" Identifier "Layout0" Screen 0 "Screen0" 0 0 Screen 1 "Screen1" RightOf "Screen0" 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 "BenQ GW2255" HorizSync 30.0 - 83.0 VertRefresh 50.0 - 76.0 Option "DPMS" EndSection Section "Monitor" # HorizSync source: unknown, VertRefresh source: unknown Identifier "Monitor1" VendorName "Unknown" ModelName "BenQG2222HDL" HorizSync 0.0 - 0.0 VertRefresh 0.0 Option "DPMS" EndSection Section "Device" Identifier "Device0" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce GTX 570" BusID "PCI:1:0:0" EndSection Section "Device" Identifier "Device1" Driver "nvidia" VendorName "NVIDIA Corporation" BoardName "GeForce 210" BusID "PCI:2:0:0" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "Stereo" "0" Option "nvidiaXineramaInfoOrder" "DFP-1" Option "metamodes" "DVI-I-1: nvidia-auto-select +1920+0, HDMI-0: nvidia-auto-select +0+0" Option "SLI" "Off" Option "MultiGPU" "Off" Option "BaseMosaic" "off" SubSection "Display" Depth 24 EndSubSection EndSection Section "Screen" # Removed Option "metamodes" "HDMI-0: nvidia-auto-select +1920+0, VGA-0: nvidia-auto-select +0+0" Identifier "Screen1" Device "Device1" Monitor "Monitor1" DefaultDepth 24 Option "Stereo" "0" Option "metamodes" "VGA-0: nvidia-auto-select +0+0, HDMI-0: nvidia-auto-select +1920+0" Option "SLI" "Off" Option "MultiGPU" "Off" Option "BaseMosaic" "off" SubSection "Display" Depth 24 EndSubSection EndSection Moreover, I have tried also a personalized xorg file that has only one screen and Base Mosaic turned on but with no luck.
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 "BenQ GW2255" HorizSync 30.0 - 83.0 VertRefresh 50.0 - 76.0 Option "DPMS" EndSection Section "Monitor" Identifier "Monitor1" VendorName "Unknown" ModelName "BenQG2222HDL" HorizSync 0.0 - 0.0 VertRefresh 0.0 EndSection Section "Device" Identifier "Device0" Driver "nvidia" BoardName "GeForce GTX 570" Option "ConnectedMonitor" "DFP-0,DFP-1" Option "MetaModeOrientation" "DFP-0 LeftOf DFP-1" VendorName "NVIDIA Corporation" EndSection Section "Device" Identifier "Device1" Driver "nvidia" VendorName "NVIDIA Corporation" Option "ConnectedMonitor" "DFP-1,CRT-1" Option "MetaModeOrientation" "DFP-1 LeftOf CRT-1" BoardName "GeForce 210" BusID "PCI:2:0:0" EndSection Section "Screen" Identifier "Screen0" Device "Device0" Monitor "Monitor0" DefaultDepth 24 Option "Stereo" "0" Option "nvidiaXineramaInfoOrder" "DFP-1" Option "metamodes" "DPY-1: nvidia-auto-select @1920x1080 +1920+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}, DPY-2: nvidia-auto-select @1920x1080 +0+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0} DPY-4: nvidia-auto-select @1920x1080 +0+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}, DPY-6: nvidia-auto-select @1920x1080 +1920+0 {ViewPortIn=1920x1080, ViewPortOut=1920x1080+0+0}" Option "SLI" "Off" Option "MultiGPU" "Off" Option "BaseMosaic" "on" SubSection "Display" Depth 24 EndSubSection EndSection I tried the Base mosaic too.. Nothing it purely doesn't work! Please help me. Linux monitors settings ( xorg ) drive me nuts!!!
