我在 Ubuntu 16.04 上将两个显示器连接到我的每台 GTX 980 Ti。NVIDIA X Server 设置成功检测到两个显示器和两个屏幕，其中屏幕 1 的绝对位置设置为 +1920+0。
这是我的 xorg.conf 文件：
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings: version 375.20 (buildd@lcy01-26) Sat Nov 19 12:38:43 UTC 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 "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 "ViewSonic VX2433wm"
HorizSync 24.0 - 82.0
VertRefresh 50.0 - 75.0
Option "DPMS"
EndSection
Section "Monitor"
# HorizSync source: edid, VertRefresh source: edid
Identifier "Monitor1"
VendorName "Unknown"
ModelName "ViewSonic VP2365WB"
HorizSync 24.0 - 82.0
VertRefresh 50.0 - 75.0
Option "DPMS"
EndSection
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 980 Ti"
BusID "PCI:1:0:0"
EndSection
Section "Device"
Identifier "Device1"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 980 Ti"
BusID "PCI:2:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
Option "Stereo" "0"
Option "nvidiaXineramaInfoOrder" "DFP-0"
Option "metamodes" "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 "Monitor1"
DefaultDepth 24
Option "Stereo" "0"
Option "nvidiaXineramaInfoOrder" "DFP-0"
Option "metamodes" "nvidia-auto-select +0+0"
Option "SLI" "Off"
Option "MultiGPU" "Off"
Option "BaseMosaic" "off"
SubSection "Display"
Depth 24
EndSubSection
EndSection
但是，我的第二台显示器（显示器 1、屏幕 1）是空白的（黑色）。但奇怪的是：我可以将鼠标移到第二台屏幕上，然后我会看到一个黑色十字，鼠标所在的位置有白色边界。我在第二个屏幕上看不到任何其他东西（全黑），也无法将窗口拖到上面。
以下是运行的输出：sudo lshw -c video
*-display
description: VGA compatible controller
product: GM200 [GeForce GTX 980 Ti]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:01:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
configuration: driver=nvidia latency=0
resources: irq:135 memory:de000000-deffffff memory:c0000000-cfffffff memory:d0000000-d1ffffff ioport:e000(size=128) memory:df000000-df07ffff
*-display
description: VGA compatible controller
product: GM200 [GeForce GTX 980 Ti]
vendor: NVIDIA Corporation
physical id: 0
bus info: pci@0000:02:00.0
version: a1
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress vga_controller bus_master cap_list rom
configuration: driver=nvidia latency=0
resources: irq:136 memory:dc000000-dcffffff memory:a0000000-afffffff memory:b0000000-b1ffffff ioport:d000(size=128) memory:dd000000-dd07ffff
我尝试过使用 xorg.conf 以及 NVIDIA X 服务器设置，但到目前为止没有任何效果，我的第二台显示器仍然空白。当我从 14.04 升级到 16.04 时出现了这个问题。我安装了双操作系统，带有 Windows，第二台显示器在我的另一个操作系统上正常。
答案1
经过几天的麻烦，我终于找到了解决方案，或者可能只是一种解决方法：除非您在 nvidia 设置中启用 Xinerama，否则多显示器设置将无法工作。
要做到这一点：
打开终端，写入
sudo nvidia-settings在 X 服务器显示配置中，启用 Xinerama
保存到 X 配置文件（您可能希望在此步骤之前创建 xorf.conf 文件的备份）。关闭设置窗口。
- 在终端中运行
sudo service lightdm restart