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：
- 更改附加显示器的分辨率
- 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