I have 3 monitors. I needed them to be DVI (long story) so I got 2 NVIDIA GTX 950's - Great cards by the way.
I'm migrating over from Windows and I want my set up to be identical with the tri monitors. I'm running 16.04 Gnome
The system struggled a bit, I found a good guide on installing the NVIDIA drivers. I performed these operations:
http://ift.tt/2aSvnst
and the system started behaving. The problem is I can't get the 3rd monitor (on the second GPU) to show up. It's the only monitor on this second GPU.
lspci shows both cards
Code:
ryan@Ubuntu:~$ lspci | grep GTX 01:00.0 VGA compatible controller: NVIDIA Corporation GM206 [GeForce GTX 950] (rev a1) 07:00.0 VGA compatible controller: NVIDIA Corporation GM206 [GeForce GTX 950] (rev a1)
When I installed the NVIDIA drivers and ran the config it created an xorg.conf file.
I noticed it had both GPUs but only 2 monitors. I manually added the 3rd screen and monitor.
The output of that file is below.
One thing I noticed is that after updated xorg.conf, the 3rd monitor backlight shows up. It's blank and won't show in Gnome, but it's awake somehow now.
Here's my modified xorg.conf output:
Code:
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 367.35 (buildmeister@swio-display-x64-rhel04-01) Mon Jul 11 23:51:45 PDT 2016
Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0" 0 0
Screen 1 "Screen1" RightOf "Screen0"
Screen 2 "Screen2" LeftOf "Screen0" #manually added second screen
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
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"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
Section "Monitor"
Identifier "Monitor1"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
#manually added 3rd monitor
Section "Monitor"
Identifier "Monitor2"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 950"
BusID "PCI:1:0:0"
EndSection
Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 950"
BusID "PCI:7:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
Section "Screen"
Identifier "Screen1"
Device "Device0"
Monitor "Monitor1"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
#manually added second screen section
Section "Screen"
Identifier "Screen2"
Device "Device1"
Monitor "Monitor2"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection
Code:
ryan@Ubuntu:~$ 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*+ 1920x1200 59.88 1920x1080 60.00 1680x1050 59.95 1600x1200 60.00 1280x1024 75.02 60.02 1280x800 59.81 1152x864 75.00 1024x768 75.03 60.00 800x600 75.00 60.32 640x480 75.00 59.94 DP-0 disconnected (normal left inverted right x axis y axis) DP-1 disconnected (normal left inverted right x axis y axis) HDMI-0 disconnected (normal left inverted right x axis y axis) DVI-D-0 connected 2560x1440+2560+0 (normal left inverted right x axis y axis) 597mm x 336mm 2560x1440 59.95*+ 1920x1200 59.88 1920x1080 60.00 1680x1050 59.95 1600x1200 60.00 1280x1024 75.02 60.02 1280x800 59.81 1152x864 75.00 1024x768 75.03 60.00 800x600 75.00 60.32 640x480 75.00 59.94
Ubuntu & Dual NVIDA GPU's - 2nd Card Won't Comply, That Jerk!