# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 390.25 (buildd@lcy01-amd64-002) Mon Jan 29 21:11:27 UTC 2018
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 375.66 (buildmeister@swio-display-x86-rhel47-06) Mon May 1 15:45:32 PDT 2017
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 "ACH QHD270QHD270QHD270"
HorizSync 88.8 - 88.8
VertRefresh 60.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 960"
Option "Coolbits" "28"
EndSection
Section "Screen"
# Removed Option "metamodes" "DVI-I-1: nvidia-auto-select +0+0, DP-4: nvidia-auto-select +2560+0"
# Removed Option "metamodes" "DVI-I-1: nvidia-auto-select +2560+0, DP-4: nvidia-auto-select +0+180"
# Removed Option "metamodes" "DVI-I-1: nvidia-auto-select +0+0 {ForceCompositionPipeline=On, ForceFullCompositionPipeline=On}, DP-4: nvidia-auto-select +2560+0"
# Removed Option "metamodes" "DVI-I-1: nvidia-auto-select +0+0 {ForceCompositionPipeline=On, ForceFullCompositionPipeline=On}, DP-4: nvidia-auto-select +2560+0 {ForceCompositionPipeline=On, ForceFullCompositionPipeline=On}"
# Removed Option "metamodes" "DVI-I-1: nvidia-auto-select +0+0, DP-4: nvidia-auto-select +2560+0"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "Stereo" "0"
Option "nvidiaXineramaInfoOrder" "DFP-0"
Option "metamodes" "DVI-I-1: nvidia-auto-select +0+0, DP-4: nvidia-auto-select +2560+0 {ForceCompositionPipeline=On, ForceFullCompositionPipeline=On}"
Option "SLI" "Off"
Option "MultiGPU" "Off"
Option "BaseMosaic" "off"
SubSection "Display"
Depth 24
EndSubSection
EndSection
Existe a minha configuração para ajudar na sua resolução de problemas. Eu continuamente plug 2 ou 3 ou até 4 telas em 1440p ou 1080p para minha configuração e nunca tive problemas. por anos.
Você já tentou usar nvidia-settings do terminal para iniciar sua GUI? aparentemente configura o xorg para você. Você já tentou alguma coisa derivada do ubuntu? ou o próprio ubuntu?
Qual é a sua saída bruta xrandr?
>xrandr
Screen 0: minimum 8 x 8, current 5120 x 1440, maximum 16384 x 16384
DVI-I-0 disconnected (normal left inverted right x axis y axis)
DVI-I-1 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 597mm x 336mm
2560x1440 59.95*+
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 connected 2560x1080+2560+0 (normal left inverted right x axis y axis) 673mm x 284mm
2560x1080 60.00*+
1920x1080 60.00 60.00 59.94 50.00 23.97 60.05 60.00 50.04
1680x1050 59.95
1280x1024 75.02 60.02
1280x800 59.81
1280x720 60.00 59.94 50.00
1152x864 75.00
1024x768 75.03 60.00
800x600 75.00 60.32
720x576 50.00
720x480 59.94
640x480 75.00 59.94 59.93
DP-5 disconnected (normal left inverted right x axis y axis)