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[Alberto Salvia Novella <es20490446e@xxxxxxxxx>]

** Changed in: linux (Ubuntu)
   Importance: Undecided => High

** Also affects: linux
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1438451

Title:
  laptop sometimes locks up when unplugging displayPort monitor

Status in The Linux Kernel:
  New
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  sometimes, but not always, when unplugging my displayPort external
  monitor, the screen freezes & stops responding to any mouse/keyboard
  presses.  This didn't happen in utopic, but started after upgrading to
  vivid.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: linux-image-3.19.0-10-generic 3.19.0-10.10
  ProcVersionSignature: Ubuntu 3.19.0-10.10-generic 3.19.2
  Uname: Linux 3.19.0-10-generic x86_64
  NonfreeKernelModules: nvidia wl
  ApportVersion: 2.16.2-0ubuntu5
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC3:  jbarnett   1938 F.... pulseaudio
   /dev/snd/controlC2:  jbarnett   1938 F.... pulseaudio
   /dev/snd/controlC1:  jbarnett   1938 F.... pulseaudio
   /dev/snd/controlC0:  jbarnett   1938 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Mon Mar 30 15:57:37 2015
  HibernationDevice: RESUME=UUID=948280a0-a059-468d-8484-f0d317f46e6d
  InstallationDate: Installed on 2014-02-24 (399 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04 "Trusty Tahr" - Alpha amd64 (20140218)
  MachineType: Apple Inc. MacBookPro11,3
  ProcEnviron:
   TERM=xterm
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 EFI VGA
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-10-generic.efi.signed root=UUID=135fd833-3282-4f3b-8802-0a27ec2765b9 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-3.19.0-10-generic N/A
   linux-backports-modules-3.19.0-10-generic  N/A
   linux-firmware                             1.143
  SourcePackage: linux
  UpgradeStatus: Upgraded to vivid on 2015-02-04 (54 days ago)
  dmi.bios.date: 10/18/2013
  dmi.bios.vendor: Apple Inc.
  dmi.bios.version: MBP112.88Z.0138.B02.1310181745
  dmi.board.asset.tag: Base Board Asset Tag#
  dmi.board.name: Mac-2BD1B31983FE1663
  dmi.board.vendor: Apple Inc.
  dmi.board.version: MacBookPro11,3
  dmi.chassis.type: 10
  dmi.chassis.vendor: Apple Inc.
  dmi.chassis.version: Mac-2BD1B31983FE1663
  dmi.modalias: dmi:bvnAppleInc.:bvrMBP112.88Z.0138.B02.1310181745:bd10/18/2013:svnAppleInc.:pnMacBookPro11,3:pvr1.0:rvnAppleInc.:rnMac-2BD1B31983FE1663:rvrMacBookPro11,3:cvnAppleInc.:ct10:cvrMac-2BD1B31983FE1663:
  dmi.product.name: MacBookPro11,3
  dmi.product.version: 1.0
  dmi.sys.vendor: Apple Inc.

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