我遇到了一个奇怪的问题。上周五我断开了联想 ThinkPad Yoga 460 与外接显示器的连接，今天我重新连接它，但似乎显示器不再被检测到。显示器和 HDMI 电缆似乎没问题，因为它们可以与其他笔记本电脑配合使用。
输出sudo lshw -C display
*-display
description: VGA compatible controller
product: Sky Lake Integrated Graphics
vendor: Intel Corporation
physical id: 2
bus info: pci@0000:00:02.0
version: 07
width: 64 bits
clock: 33MHz
capabilities: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
resources: irq:277 memory:d0000000-d0ffffff memory:c0000000-cfffffff ioport:4000(size=64) memory:c0000-dffff
输出xrandr
Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 309mm x 173mm
1920x1080 59.98*+ 59.93
1680x1050 59.95 59.88
1600x1024 60.17
1400x1050 59.98
1280x1024 60.02
1440x900 59.89
1280x960 60.00
1360x768 59.80 59.96
1152x864 60.00
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
960x600 60.00
960x540 59.99
800x600 60.00 60.32 56.25
840x525 60.01 59.88
800x512 60.17
700x525 59.98
640x512 60.02
720x450 59.89
640x480 60.00 59.94
680x384 59.80 59.96
576x432 60.06
512x384 60.00
400x300 60.32 56.34
320x240 60.05
DP-1 disconnected (normal left inverted right x axis y axis)
1920x1080 59.98
HDMI-1 disconnected (normal left inverted right x axis y axis)
1920x1080 59.98
如果需要的话我会提供更多信息！