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[EdgarPE <1411552@xxxxxxxxxxxxxxxxxx>]

*** This bug is a duplicate of bug 1300914 ***
    https://bugs.launchpad.net/bugs/1300914

Here is a duplicate issue, with apport info:
https://bugs.launchpad.net/ubuntu/+source/libdrm/+bug/1411552

** This bug has been marked a duplicate of bug 1300914
   External screen undetected after first plug

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https://bugs.launchpad.net/bugs/1411552

Title:
  External monitor detected only on first plug.

Status in libdrm package in Ubuntu:
  New

Bug description:
  My problem is, If I connect an external display (monitor, projector,
  etc) Ubuntu detects it only once, only the first time I plug it in.
  After that, I can't reconnect that external display again, Ubuntu does
  not see it. After a system restart the disply is detected again, for
  the first time I plug it in.

  This problem is really annying, because initializing all the
  applications run before needs a lot of time.

  I don't know if problem is with the libdrm package, but my syslog got
  a lot of these errors when I plugged OUT the display:

  Jan 16 09:23:33 probook430 kernel: [   92.060702] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up
  Jan 16 09:23:33 probook430 kernel: [   92.066291] [drm:intel_dp_start_link_train] *ERROR* too many voltage retries, give up

  This problem is persistent, and can be reproduced every time with
  every external display.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: libdrm-intel1 2.4.56-1~ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-44.73-generic 3.13.11-ckt12
  Uname: Linux 3.13.0-44-generic x86_64
  .tmp.unity.support.test.0:
   
  ApportVersion: 2.14.1-0ubuntu3.6
  Architecture: amd64
  CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
  CompositorRunning: compiz
  CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
  CompositorUnredirectFSW: true
  CurrentDesktop: Unity
  Date: Fri Jan 16 09:35:28 2015
  DistUpgraded: Fresh install
  DistroCodename: trusty
  DistroVariant: ubuntu
  DkmsStatus:
   virtualbox, 4.3.10, 3.13.0-43-generic, x86_64: installed
   virtualbox, 4.3.10, 3.13.0-44-generic, x86_64: installed
  EcryptfsInUse: Yes
  GraphicsCard:
   Intel Corporation Haswell-ULT Integrated Graphics Controller [8086:0a16] (rev 09) (prog-if 00 [VGA controller])
     Subsystem: Hewlett-Packard Company Device [103c:1946]
  InstallationDate: Installed on 2014-05-08 (252 days ago)
  InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
  MachineType: Hewlett-Packard HP ProBook 430 G1
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-44-generic root=UUID=23e372b4-5879-48d4-9c78-b868fcb03d22 ro quiet splash vt.handoff=7
  SourcePackage: libdrm
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 09/10/2013
  dmi.bios.vendor: Hewlett-Packard
  dmi.bios.version: L73 Ver. 01.04
  dmi.board.name: 1946
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: KBC Version 89.12
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.modalias: dmi:bvnHewlett-Packard:bvrL73Ver.01.04:bd09/10/2013:svnHewlett-Packard:pnHPProBook430G1:pvrA3008CD20003:rvnHewlett-Packard:rn1946:rvrKBCVersion89.12:cvnHewlett-Packard:ct10:cvr:
  dmi.product.name: HP ProBook 430 G1
  dmi.product.version: A3008CD20003
  dmi.sys.vendor: Hewlett-Packard
  version.compiz: compiz 1:0.9.11.3+14.04.20141104-0ubuntu1
  version.ia32-libs: ia32-libs N/A
  version.libdrm2: libdrm2 2.4.56-1~ubuntu1
  version.libgl1-mesa-dri: libgl1-mesa-dri 10.1.3-0ubuntu0.2
  version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
  version.libgl1-mesa-glx: libgl1-mesa-glx 10.1.3-0ubuntu0.2
  version.xserver-xorg-core: xserver-xorg-core 2:1.15.1-0ubuntu2.6
  version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.8.2-1ubuntu2
  version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.3.0-1ubuntu3.1
  version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.3
  version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.10-1ubuntu2
  xserver.bootTime: Fri Jan 16 09:22:09 2015
  xserver.configfile: default
  xserver.errors:
   
  xserver.logfile: /var/log/Xorg.0.log
  xserver.outputs:
   product id                               12588 
   vendor                                     AUO
  xserver.version: 2:1.15.1-0ubuntu2.6

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