带有 HDMI 转 VGA 转换器的笔记本电脑附加显示器随机断开连接

Question

我是 ubuntu 18.04，Intel® UHD Graphics 620 (WHL GT2)因为我有一个闲置的旧 vga 显示器，所以我想把它用作双显示器。我购买了HDMI 转 VGA适配器将显示器连接到我的笔记本电脑。

它运行良好，出现在显示列表中。

现在的问题是，屏幕突然（大约 5 分钟内）断开连接，我的显示器不显示信号。摆弄连接（轻推和推动）没有任何变化 - 但如果我完全断开连接然后重新连接，显示器就会开始显示。

我迄今为止尝试过的：

1. 更改附加显示器的分辨率
2. 更改刷新率

我真的不知道哪里出了问题，也不知道该如何调试。有什么想法吗？

me@me-0020:~$ xrandr
Screen 0: minimum 320 x 200, current 2646 x 768, maximum 8192 x 8192
eDP-1 connected primary 1366x768+1280+0 (normal left inverted right x axis y axis) 309mm x 173mm
   1366x768      60.00*+
   1360x768      59.80    59.96  
   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  
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-1 connected 1280x720+0+48 (normal left inverted right x axis y axis) 372mm x 209mm
   1280x720      59.86*+  60.00    50.00    59.94  
   1920x1080     60.00    50.00    59.94  
   1280x1024     75.02    60.02  
   1280x960      60.00  
   1366x768      59.79  
   1360x768      60.02  
   1152x864      75.00  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   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  
DP-2 disconnected (normal left inverted right x axis y axis)
HDMI-2 disconnected (normal left inverted right x axis y axis)

me@me-0020:~$ lspci | grep VGA
00:02.0 VGA compatible controller: Intel Corporation Device 3ea0 (rev 02)
me@me-0020:~$ sudo lshw -C display
[sudo] password for me: 
  *-display                 
       description: VGA compatible controller
       product: Intel Corporation
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 02
       width: 64 bits
       clock: 33MHz
       capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:147 memory:a0000000-a0ffffff memory:90000000-9fffffff ioport:2000(size=64) memory:c0000-dffff