Nvidia X 服务器设置仅显示 1 个屏幕（笔记本电脑 + 外接显示器已连接）
Cha*_*ntz 27 multiple-monitors hdmi 14.04 nvidia-settings
我最近在配备 Nvidia Quadro K1100M 显卡的 Dell M3800 上安装了 Ubuntu 14.04 的新副本。
后来我还通过 HDMI（HDMI 转 DVI 连接器）连接了我的外接显示器。然后我开始在我的笔记本电脑屏幕上看到缓慢的屏幕性能。缓慢是指我的击键或动作似乎总是滞后。有趣的是，这似乎只发生在我的笔记本电脑屏幕上，我的外接显示器工作正常。
我已确保安装和使用 Nvidia 的专有驱动程序 331.38。
所以我检查了我的系统设置 > 显示。它正确显示 2 个屏幕，如下所示。
但是后来我进入了 Nvidia X Server 设置，它只显示一个屏幕，一个大屏幕分辨率，如下所示。
我认为这导致我的笔记本电脑性能缓慢，因为我假设外接显示器和笔记本电脑屏幕的屏幕刷新率不同。
我在下面倾倒xorg.conf和xandr输出，
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 331.38 (buildmeister@swio-display-x64-rhel04-15) Wed Jan 8 19:53:14 PST 2014
Section "ServerLayout"
Identifier "layout"
Screen 0 "nvidia" 0 0
Inactive "intel"
InputDevice "Keyboard0" "CoreKeyboard"
InputDevice "Mouse0" "CorePointer"
EndSection
Section "InputDevice"
# generated from default
Identifier "Keyboard0"
Driver "keyboard"
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 "Monitor"
Identifier "Monitor0"
VendorName "Unknown"
ModelName "Unknown"
HorizSync 28.0 - 33.0
VertRefresh 43.0 - 72.0
Option "DPMS"
EndSection
Section "Device"
Identifier "intel"
Driver "modesetting"
BusID "PCI:0@0:2:0"
EndSection
Section "Device"
Identifier "nvidia"
Driver "nvidia"
BusID "PCI:2@0:0:0"
EndSection
Section "Screen"
Identifier "intel"
Device "intel"
Monitor "Monitor0"
EndSection
Section "Screen"
Identifier "nvidia"
Device "nvidia"
Monitor "Monitor0"
Option "AllowEmptyInitialConfiguration" "on"
Option "ConstrainCursor" "off"
SubSection "Display"
Modes "nvidia-auto-select"
EndSubSection
EndSection
xrandr 输出，
cdtank@cdtank-Dell-Precision-M3800:~/work$ xrandr
Screen 0: minimum 8 x 8, current 3840 x 1080, maximum 16384 x 16384
eDP-1-0 connected 1920x1080+0+0 344mm x 193mm
1920x1080 60.0*+ 59.9
1680x1050 60.0 59.9
1600x1024 60.2
1400x1050 60.0
1280x1024 60.0
1440x900 59.9
1280x960 60.0
1360x768 59.8 60.0
1152x864 60.0
1024x768 60.0 60.0
960x720 60.0
928x696 60.1
896x672 60.0
960x600 60.0
960x540 60.0
800x600 60.0 60.3 56.2
840x525 60.0 59.9
800x512 60.2
700x525 60.0
640x512 60.0
720x450 59.9
640x480 60.0 59.9
680x384 59.8 60.0
576x432 60.1
512x384 60.0
400x300 60.3 56.3
320x240 60.1
VGA-1-0 disconnected
HDMI-1-0 connected 1920x1080+1920+0 598mm x 336mm
1920x1080 60.0*+
1600x1200 60.0
1680x1050 59.9
1400x1050 59.9
1600x900 60.0
1280x1024 75.0 60.0
1440x900 59.9
1280x960 60.0
1280x800 59.9
1152x864 75.0
1024x768 75.1 70.1 60.0
832x624 74.6
800x600 72.2 75.0 60.3 56.2
640x480 75.0 72.8 66.7 60.0
720x400 70.1
DisplayPort-1-0 disconnected
HDMI-1-1 disconnected
更新 删除 xorg.conf 并重新启动后。这是它的内容。
Section "ServerLayout"
Identifier "layout"
Screen 0 "nvidia"
Inactive "intel"
EndSection
Section "Device"
Identifier "intel"
Driver "modesetting"
BusID "PCI:0@0:2:0"
EndSection
Section "Screen"
Identifier "intel"
Device "intel"
EndSection
Section "Device"
Identifier "nvidia"
Driver "nvidia"
BusID "PCI:2@0:0:0"
Option "ConstrainCursor" "off"
EndSection
Section "Screen"
Identifier "nvidia"
Device "nvidia"
Option "AllowEmptyInitialConfiguration" "on"
EndSection
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