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Ubuntu 18.04 VGA 外接显示器问题

tag-icon • tag-icon multiple-monitors display vga
Ubuntu 18.04 VGA 外接显示器问题

当我将笔记本电脑连接到有 VGA 问题的电视时，电视显示无信号，并且 Ubuntu 无法检测到屏幕。运行时，xrandar我得到以下信息：

Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192
VGA-0 disconnected (normal left inverted right x axis y axis)
LVDS connected primary 1366x768+0+0 (normal left inverted right x axis y axis) 309mm x 174mm
   1366x768      60.07*+  40.04  
   1280x720      59.97  
   1152x768      59.95  
   1024x768      59.95  
   800x600       59.96  
   848x480       59.94  
   720x480       59.94  
   640x480       59.94  
DisplayPort-0 disconnected (normal left inverted right x axis y axis)
DisplayPort-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-2 disconnected (normal left inverted right x axi y axis)

我的电视是国产电视，型号是 Grouhy 32 英寸全高清 LED 电视 EH-10000

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