I have a brand new computer (i5-7200U, so Kabylake with a Intel HD Grpahics 620) running Ubuntu 16.10.And I use an external HDMI screen.For some reasons, this one is detected (I see it in the Display parameters menu) but it stays black (with a signal because if not, the monitor would turn off).At work I have another HDMI screen, and I have no problems with this one. I also tried various cables, but the screen stays black.This screen is working, since I use it with other computers (Ubuntu 16.10, Hackintosh, Windows).I'm a bit lost about what can I do to solve this issue. Any ideas ?Here are some details of my configuration:~ % sudo lshw -c display        [sudo] Mot de passe de bigx:   *-display                        description: VGA compatible controller       produit: Intel Corporation       fabriquant: Intel Corporation       identifiant matriel: 2       information bus: pci@0000:00:02.0       version: 02       bits: 64 bits       horloge: 33MHz       fonctionnalits: pciexpress msi pm vga_controller bus_master cap_list rom       configuration: driver=i915 latency=0       ressources: irq:126 mmoire:ee000000-eeffffff mmoire:d0000000-dfffffff portE/S:f000(taille=64) mmoire:c0000-dffffSo the driver is i915 (from https://01.org/linuxgraphics/ and up to date).~ % modinfo i915         filename:       /lib/modules/4.8.0-41-generic/kernel/drivers/gpu/drm/i915/i915.kolicense:        GPL and additional rightsdescription:    Intel Graphicsauthor:         Intel Corporationauthor:         Tungsten Graphics, Inc.firmware:       i915/bxt_dmc_ver1_07.binfirmware:       i915/skl_dmc_ver1_26.binfirmware:       i915/kbl_dmc_ver1_01.binfirmware:       i915/skl_guc_ver6_1.bin...other outputs:~ % lspci -nnk | grep -i vga -A300:02.0 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: i915and~ % xrandr --props              Screen 0: minimum 320 x 200, current 3840 x 1080, maximum 8192 x 8192eDP-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, onHDMI-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, onHDMI-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  and~ % 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 interfaceNo EDID on bus 1No EDID on bus 2No EDID on bus 4No EDID on bus 5No EDID on bus 62 potential busses found: 0 3Will 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 0If this isn't the EDID you were looking for, consider the other potential busses.Looks like i2c was successful. Have a good day.Checksum CorrectSection 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 8EndSectionWhat else could I give to help you find my problem ?
External screen recognized, but black
drivers;dual monitor;monitors;intel graphics