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电脑之前有过扩展双屏，可以排除HDMI口坏了，显卡版本为 GeForce GTX 1060 3GB

xrandr的输出：
Screen 0: minimum 8 x 8, current 1440 x 900, maximum 32767 x 32767
DVI-D-0 connected primary 1440x900+0+0 (normal left inverted right x axis y axis) 408mm x 255mm
1440x900 59.89*+ 74.98
1280x1024 75.02 60.02
1280x960 60.00
1280x800 74.93 59.81
1280x720 60.00 50.00
1152x864 75.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 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)
DP-2 disconnected (normal left inverted right x axis y axis)
DP-3 disconnected (normal left inverted right x axis y axis)
DP-4 disconnected (normal left inverted right x axis y axis)
DP-5 disconnected (normal left inverted right x axis y axis)

/etc/X11/xorg.conf的内容:
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig: version 390.77 (buildmeister@swio-display-x64-rhel04-14) Tue Jul 10 23:19:22 PDT 2018

Section "ServerLayout"
Identifier "Layout0"
Screen 0 "Screen0"
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 "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"

EndSection

Section "Screen"
Identifier "Screen0"
Device "Device0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Depth 24
EndSubSection
EndSection

HDMI-0 disconnected (normal left inverted right x axis y axis)

单独接HDMI口能用么？大概可能是驱动问题吧

单接HDMI口也没有用，显示不出来。

那么,你单连hdmi,开机有主板自检信息显示不?进bios总可以进吧,这个有显示不?

onlylove 写了： ↑2018-12-24 22:10 那么,你单连hdmi,开机有主板自检信息显示不?进bios总可以进吧,这个有显示不?

单连HDMI口，屏幕的显示就是检测不到任何信号

Clitost 写了： ↑2018-12-25 14:23

onlylove 写了： ↑2018-12-24 22:10 那么,你单连hdmi,开机有主板自检信息显示不?进bios总可以进吧,这个有显示不?

单连HDMI口，屏幕的显示就是检测不到任何信号

那你还是研究下你的hdmi线是不是好的，还有，你那显卡或者显示器的hdmi口是不是好的吧，换个显示器什么的

好的，谢谢。