** Changed in: gdm3 (Ubuntu)
       Status: Incomplete => New

** Changed in: linux (Ubuntu)
       Status: Incomplete => New

** Changed in: xorg-server (Ubuntu)
       Status: Incomplete => New

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https://bugs.launchpad.net/bugs/1801747

Title:
  External display not recognized, internal one goes to black

Status in gdm3 package in Ubuntu:
  New
Status in linux package in Ubuntu:
  New
Status in xorg-server package in Ubuntu:
  New

Bug description:
  Hi,

  I have 10 notebooks HP 1410s on which I replace XP/Vista with Ubuntu
  18.04.1 I face a problem on ALL of them, as soon as I connect an
  external screen, doesn't matter VGA or HDMI, the internal screen goes
  black, only mouse icon is their, blinking from time to time but
  reacting. External screen does show nothing but there is no "no
  signal" info what means that source is recognized.

  As soon as I release the video cable from external display, the
  internal one come back to live after few seconds. The BIOS was updated
  to latest available.

  Daniel

  tootai@hirondelle:~$ lsb_release -rd
  Description:  Ubuntu 18.04.1 LTS
  Release:      18.04

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: xorg 1:7.7+19ubuntu7.1
  ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18
  Uname: Linux 4.15.0-36-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.9-0ubuntu7.4
  Architecture: amd64
  CompositorRunning: None
  Date: Mon Nov  5 16:30:38 2018
  DistUpgraded: Fresh install
  DistroCodename: bionic
  DistroVariant: ubuntu
  DkmsStatus:
   bcmwl, 6.30.223.271+bdcom, 4.15.0-29-generic, x86_64: installed
   bcmwl, 6.30.223.271+bdcom, 4.15.0-36-generic, x86_64: installed
  ExtraDebuggingInterest: Yes
  GraphicsCard:
   Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller 
[8086:2a42] (rev 07) (prog-if 00 [VGA controller])
     Subsystem: Hewlett-Packard Company Mobile 4 Series Chipset Integrated 
Graphics Controller [103c:3072]
     Subsystem: Hewlett-Packard Company Mobile 4 Series Chipset Integrated 
Graphics Controller [103c:3072]
  InstallationDate: Installed on 2018-10-19 (17 days ago)
  InstallationMedia: Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64 
(20180725)
  MachineType: Hewlett-Packard HP ProBook 4510s
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   LANG=fr_FR.UTF-8
   SHELL=/bin/bash
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic 
root=UUID=6ddf18e3-f14e-4d1c-b2fd-ae58c6f697ed ro quiet splash vt.handoff=1
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 12/02/2010
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: 68PZI Ver. F.18
  dmi.board.name: 3072
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 24.0F
  dmi.chassis.asset.tag: CNU0012B8R
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: 
dmi:bvnHewlett-Packard:bvr68PZIVer.F.18:bd12/02/2010:svnHewlett-Packard:pnHPProBook4510s:pvrF.18:rvnHewlett-Packard:rn3072:rvrKBCVersion24.0F:cvnHewlett-Packard:ct10:cvr:
  dmi.product.family: 103C_5336AN
  dmi.product.name: HP ProBook 4510s
  dmi.product.version: F.18
  dmi.sys.vendor: Hewlett-Packard
  version.compiz: compiz N/A
  version.libdrm2: libdrm2 2.4.91-2
  version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
  version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
  version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 
2:2.99.917+git20171229-1
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2

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