Ubuntu 18.04 检测到外接显示器但突然出现蓝屏/无信号

Ubuntu 18.04 检测到外接显示器但突然出现蓝屏/无信号

我是 Ubuntu 新手,因此对于任何新手错误深表歉意。

我在华硕笔记本电脑上运行 18.04(显卡:Intel HD Graphics 615)。我最初通过 HDMI 将其连接到外接华硕显示器,使用时没有任何问题。有一天,外接显示器停止工作,而我并没有做任何更改 - 现在外接显示器上只有蓝屏和“HDMI 无信号”。(外接显示器通过 HDMI 与其他笔记本电脑配合使用时工作正常;笔记本电脑与其他显示器有同样的连接问题。)

令人困惑的是xrandr下面的输出表明外部监视器已被检测到并处于活动状态。

根据其他帖子的建议,我尝试过:

  • 更新 Ubuntu
  • 通过 Ubuntu 设置和 arandr 更改显示设置
  • 将桌面管理器更改为 LightDM 并改回
  • 寻找专有驱动程序并安装 Displaylink

我完全不知所措。如果您能提供任何建议,我将不胜感激!

Screen 0: minimum 320 x 200, current 5120 x 1800, maximum 8192 x 8192
eDP-1 connected primary 3200x1800+0+0 (normal left inverted right x axis y axis) 293mm x 165mm
   3200x1800     59.70*+
   2880x1620     59.96    59.97  
   2560x1600     59.99    59.97  
   2560x1440     59.99    59.99    59.96    59.95  
   2048x1536     60.00  
   1920x1440     60.00  
   1856x1392     60.01  
   1792x1344     60.01  
   2048x1152     59.99    59.98    59.90    59.91  
   1920x1200     59.88    59.95  
   1920x1080     60.01    59.97    59.96    59.93  
   1600x1200     60.00  
   1680x1050     59.95    59.88  
   1600x1024     60.17  
   1400x1050     59.98  
   1600x900      59.99    59.94    59.95    59.82  
   1280x1024     60.02  
   1440x900      59.89  
   1400x900      59.96    59.88  
   1280x960      60.00  
   1440x810      60.00    59.97  
   1368x768      59.88    59.85  
   1360x768      59.80    59.96  
   1280x800      59.99    59.97    59.81    59.91  
   1152x864      60.00  
   1280x720      60.00    59.99    59.86    59.74  
   1024x768      60.04    60.00  
   960x720       60.00  
   928x696       60.05  
   896x672       60.01  
   1024x576      59.95    59.96    59.90    59.82  
   960x600       59.93    60.00  
   960x540       59.96    59.99    59.63    59.82  
   800x600       60.00    60.32    56.25  
   840x525       60.01    59.88  
   864x486       59.92    59.57  
   800x512       60.17  
   700x525       59.98  
   800x450       59.95    59.82  
   640x512       60.02  
   720x450       59.89  
   700x450       59.96    59.88  
   640x480       60.00    59.94  
   720x405       59.51    58.99  
   684x384       59.88    59.85  
   680x384       59.80    59.96  
   640x400       59.88    59.98  
   576x432       60.06  
   640x360       59.86    59.83    59.84    59.32  
   512x384       60.00  
   512x288       60.00    59.92  
   480x270       59.63    59.82  
   400x300       60.32    56.34  
   432x243       59.92    59.57  
   320x240       60.05  
   360x202       59.51    59.13  
   320x180       59.84    59.32  
HDMI-1 connected 1920x1080+3200+0 (normal left inverted right x axis y axis) 527mm x 296mm
   1920x1080     60.00*+  50.00    59.94  
   1920x1080i    60.00    50.00    59.94  
   1600x1200     60.00  
   1680x1050     59.88  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x960      60.00  
   1360x768      59.95  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   800x600       72.19    75.00    60.32    56.25  
   720x576       50.00  
   720x480       60.00    59.94  
   640x480       75.00    72.81    60.00    59.94  
   720x400       70.08  

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