我有一台运行 Ubuntu 16.10 的全新计算机（i5-7200U，即带有 Intel HD Grpahics 620 的 Kabylake）。
我使用外接 HDMI 屏幕。
由于某些原因，检测到了这一点（我在“显示参数”菜单中看到它），但它保持黑色（带有信号，因为如果没有，显示器将关闭）。
在工作中，我有另一个 HDMI 屏幕，我使用这个没有任何问题。我也尝试了各种电缆，但屏幕仍然是黑色的。
该屏幕可以正常工作，因为我将它与其他计算机（Ubuntu 16.10、Hackintosh、Windows）一起使用。
我对我能做些什么来解决这个问题有点迷失。有任何想法吗 ？
以下是我的配置的一些详细信息：
~ % sudo lshw -c display
[sudo] Mot de passe de bigx :
*-display
description: VGA compatible controller
produit: Intel Corporation
fabriquant: Intel Corporation
identifiant matériel: 2
information bus: pci@0000:00:02.0
version: 02
bits: 64 bits
horloge: 33MHz
fonctionnalités: pciexpress msi pm vga_controller bus_master cap_list rom
configuration: driver=i915 latency=0
ressources: irq:126 mémoire:ee000000-eeffffff mémoire:d0000000-dfffffff portE/S:f000(taille=64) mémoire:c0000-dffff
所以驱动程序是i915（来自https://01.org/linuxgraphics/并且是最新的）。
~ % modinfo i915
filename: /lib/modules/4.8.0-41-generic/kernel/drivers/gpu/drm/i915/i915.ko
license: GPL and additional rights
description: Intel Graphics
author: Intel Corporation
author: Tungsten Graphics, Inc.
firmware: i915/bxt_dmc_ver1_07.bin
firmware: i915/skl_dmc_ver1_26.bin
firmware: i915/kbl_dmc_ver1_01.bin
firmware: i915/skl_guc_ver6_1.bin
...
其他输出：
~ % lspci -nnk | grep -i vga -A3
00:02.0 VGA compatible controller [0300]: Intel Corporation Device [8086:5916] (rev 02)
Subsystem: ASUSTeK Computer Inc. Device [1043:15a0]
Kernel driver in use: i915
Kernel modules: i915
和
~ % xrandr --props
Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192
eDP-1 connected primary 1920x1080+0+0 (normal left inverted right x axis y axis) 293mm x 165mm
EDID:
00ffffffffffff000dae721300000000
0e1a0104951d1178028785a457509b27
0d505400000001010101010101010101
010101010101b43b804a71383440503c
680025a510000018000000fe004e3133
334843452d454e310a20000000fe0043
4d4e0a202020202020202020000000fe
004e3133334843452d454e310a200024
scaling mode: Full aspect
supported: None, Full, Center, Full aspect
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
1920x1080 60.01*+ 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)
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
HDMI-1 disconnected (normal left inverted right x axis y axis)
aspect ratio: Automatic
supported: Automatic, 4:3, 16:9
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
HDMI-2 connected 1920x1080+1920+0 (normal left inverted right x axis y axis) 477mm x 268mm
EDID:
00ffffffffffff004c2d3f0b48385a5a
081a010380301b782a9561a55552a028
0f5054bfef80714f81c0810081809500
a9c0b3000101023a801871382d40582c
4500dd0c1100001e011d007251d01e20
6e285500dd0c1100001e000000fd0032
4b1e5111000a202020202020000000fc
00533232443330300a202020202001a5
020311b14690041f13120365030c0010
00011d00bc52d01e20b8285540dd0c11
00001e8c0ad090204031200c405500dd
0c110000188c0ad08a20e02d10103e96
00dd0c11000018000000000000000000
00000000000000000000000000000000
00000000000000000000000000000000
00000000000000000000000000000050
aspect ratio: Automatic
supported: Automatic, 4:3, 16:9
Broadcast RGB: Automatic
supported: Automatic, Full, Limited 16:235
audio: auto
supported: force-dvi, off, auto, on
1920x1080 60.00*+ 50.00 59.94
1680x1050 59.88
1600x900 60.00
1280x1024 75.02 60.02
1440x900 59.90
1280x800 59.91
1152x864 75.00
1280x720 60.00 50.00 59.94
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 66.67 60.00 59.94
720x400 70.08
和
~ % sudo get-edid | parse-edid
[sudo] Mot de passe de bigx :
This is read-edid version 3.0.2. Prepare for some fun.
Attempting to use i2c interface
No EDID on bus 1
No EDID on bus 2
No EDID on bus 4
No EDID on bus 5
No EDID on bus 6
2 potential busses found: 0 3
Will scan through until the first EDID is found.
Pass a bus number as an option to this program to go only for that one.
256-byte EDID successfully retrieved from i2c bus 0
If this isn't the EDID you were looking for, consider the other potential busses.
Looks like i2c was successful. Have a good day.
Checksum Correct
Section "Monitor"
Identifier "S22D300"
ModelName "S22D300"
VendorName "SAM"
# Monitor Manufactured week 8 of 2016
# EDID version 1.3
# Digital Display
DisplaySize 480 270
Gamma 2.20
Option "DPMS" "true"
Horizsync 30-81
VertRefresh 50-75
# Maximum pixel clock is 170MHz
#Not giving standard mode: 1152x864, 75Hz
#Not giving standard mode: 1280x720, 60Hz
#Not giving standard mode: 1280x800, 60Hz
#Not giving standard mode: 1280x1024, 60Hz
#Not giving standard mode: 1440x900, 60Hz
#Not giving standard mode: 1600x900, 60Hz
#Not giving standard mode: 1680x1050, 60Hz
#Extension block found. Parsing...
Modeline "Mode 8" 74.25 1280 1720 1760 1980 720 725 730 750 +hsync +vsync
Modeline "Mode 0" 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
Modeline "Mode 1" 74.25 1280 1390 1430 1650 720 725 730 750 +hsync +vsync
Modeline "Mode 2" 148.500 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync
Modeline "Mode 3" 74.250 1280 1390 1420 1650 720 725 730 750 +hsync +vsync
Modeline "Mode 4" 148.500 1920 2448 2492 2640 1080 1084 1089 1125 +hsync +vsync
Modeline "Mode 5" 74.250 1280 1720 1760 1980 720 725 730 750 +hsync +vsync
Modeline "Mode 6" 27.000 720 732 796 864 576 581 586 625 -hsync -vsync
Modeline "Mode 7" 27.027 720 736 798 858 480 489 495 525 -hsync -vsync
Modeline "Mode 9" 27.00 720 732 796 864 576 581 586 625 -hsync -vsync
Modeline "Mode 10" 27.00 720 736 798 858 480 489 495 525 -hsync -vsync
Option "PreferredMode" "Mode 8"
EndSection
我还能提供什么来帮助您找到我的问题？
答案1
您是否尝试过按显示器的菜单按钮？用它来选择 HDMI 输入。
我有一个类似的问题，完全困惑，直到我弄清楚这一点。分享以防你忽略了这一点。
答案2
我遇到了同样的问题（我认为是相同的三星屏幕），我只是通过拔掉电源线来解决它，因为菜单按钮没有响应，然后重新插入并通过随机敲击按钮来测试按钮。看起来不错，所以我重新插入 HDMI 电缆，它就工作了！
答案3
我不得不从 gdm3 切换到 lightdm。
sudo apt install lightdm -y
然后停止gdm3服务，这可能会导致重启
sudo service gdm3 stop
lightdm 应默认启用，您不必手动启动它，但如果您这样做：
sudo service lightdm start
检查 gdm3 和 lightdm 的状态，确保 gdm3 关闭且 lightdm 打开。
sudo service gdm3 status
sudo service lightdm status