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[Brad Figg <brad.figg@xxxxxxxxxxxxx>]

This change was made by a bot.

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

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https://bugs.launchpad.net/bugs/1583044

Title:
  attaching a docking station only work once, second time freezes

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  I can reliably make Linux freeze.

  If I boot past the cryptsetup password dialog into GDM (I think),
  attach a docking station, unattach, then reattach, the system freezes.
  At least I cannot move the mouse cursor anymore, switch VTs, reboot,
  num lock doesn't toggle.

  I think it works well when *not* booting into GDM, but staying at the
  passphrase dialogue of the initramfs.

  I'm having a Thinkpad X240 with two external monitors.

  This is the standard ubuntu kernel, I haven't tested upstream kernels
  just yet. I'm intending to test with      linux-
  image-4.6.0-040600-generic_4.6.0-040600.201605151930_amd64.deb  from
  http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-yakkety/ now.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-22-generic 4.4.0-22.40
  ProcVersionSignature: Ubuntu 4.4.0-22.40-generic 4.4.8
  Uname: Linux 4.4.0-22-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC1:  muelli     1991 F.... pulseaudio
   /dev/snd/controlC0:  muelli     1991 F.... pulseaudio
  CurrentDesktop: GNOME
  Date: Wed May 18 10:35:15 2016
  HibernationDevice: RESUME=UUID=af92c9d7-569e-41d4-86d2-af0ada5f9377
  InstallationDate: Installed on 2015-12-02 (167 days ago)
  InstallationMedia: Ubuntu-GNOME 16.04 LTS "Xenial Xerus" - Alpha amd64 (20151027)
  MachineType: LENOVO 20AMS61707
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-22-generic root=/dev/mapper/lvm--vg-ubuntu--root ro rootflags=subvol=@ cryptopts=target=crypto,source=/dev/disk/by-uuid/4a1951b7-3604-4891-8ec6-3f5c9112d30d quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-22-generic N/A
   linux-backports-modules-4.4.0-22-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/10/2016
  dmi.bios.vendor: LENOVO
  dmi.bios.version: GIET85WW (2.35 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 20AMS61707
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Defined
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvrGIET85WW(2.35):bd03/10/2016:svnLENOVO:pn20AMS61707:pvrThinkPadX240:rvnLENOVO:rn20AMS61707:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 20AMS61707
  dmi.product.version: ThinkPad X240
  dmi.sys.vendor: LENOVO

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