嘿伙计们，我的第二台显示器已打开，但只显示黑色图像。我的主显示器连接到视频卡（AMD 280），而第二台显示器连接到主板的 VGA 端口，VGA 端口在 BIOS 中已启用，所以我不确定是什么原因导致它无法被检测到
以下是输出xrandr：
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 16384 x 16384
DFP1 disconnected (normal left inverted right x axis y axis)
DFP2 disconnected (normal left inverted right x axis y axis)
DFP3 disconnected (normal left inverted right x axis y axis)
DFP4 disconnected (normal left inverted right x axis y axis)
DFP5 disconnected (normal left inverted right x axis y axis)
DFP6 disconnected (normal left inverted right x axis y axis)
DFP7 disconnected (normal left inverted right x axis y axis)
DFP8 disconnected (normal left inverted right x axis y axis)
DFP9 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 531mm x 298mm
1920x1080 60.0*+ 50.0 59.9 50.0 60.1 60.0
1776x1000 50.0 59.9 50.0 60.0
1680x1050 60.0
1400x1050 60.0
1600x900 60.0
1360x1024 60.0
1280x1024 75.0 60.0
1440x900 60.0
1280x960 75.0 60.0
1280x900 75.0 60.0
1360x768 60.0
1280x800 59.8
1280x768 59.8
1280x720 50.0 60.0 59.9
1024x768 75.0 60.0
1152x648 50.0 59.9
800x600 75.0 60.3
848x480 75.0 60.0
720x480 60.1 60.0 60.1 59.9
640x480 75.0 60.0 59.9
DFP10 disconnected (normal left inverted right x axis y axis)
CRT1 disconnected (normal left inverted right x axis y axis)
如果您需要任何其他输出，请告诉我。