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[Bug 1575038] Re: Connecting docking station reboots computer


Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.6 kernel[0].

If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.

If the mainline kernel does not fix this bug, please add the tag:

Once testing of the upstream kernel is complete, please mark this bug as

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.6-rc6-wily/

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

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

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  Connecting docking station reboots computer

Status in linux package in Ubuntu:

Bug description:
  When connecting a awake and running laptop to Dells docking station the desktop crashes and shows the disk encryption password login prompt: https://goo.gl/photos/9QEkQDkNPbT71wDD6
  After entering the password all screens goes black and nothing happens.

  Trying to undock and then dock again after the above problem the console displays the follwing:

  Also posted a question with more details before the upgrade to 16.04
  here https://answers.launchpad.net/ubuntu/+question/291536

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-21-generic 4.4.0-21.37
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
   /dev/snd/controlC1:  johannes   2499 F.... pulseaudio
   /dev/snd/controlC0:  johannes   2499 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Apr 26 10:14:15 2016
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-04-13 (378 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: Dell Inc. Latitude E7450
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-21-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash acpi_osi=!Windows 2012 crashkernel=384M-:128M crashkernel=384M-:128M vt.handoff=7
   linux-restricted-modules-4.4.0-21-generic N/A
   linux-backports-modules-4.4.0-21-generic  N/A
   linux-firmware                            1.157
  SourcePackage: linux
  UpgradeStatus: Upgraded to xenial on 2016-04-22 (3 days ago)
  dmi.bios.date: 03/29/2016
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A11
  dmi.board.name: 06HN6G
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA11:bd03/29/2016:svnDellInc.:pnLatitudeE7450:pvr:rvnDellInc.:rn06HN6G:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: Latitude E7450
  dmi.sys.vendor: Dell Inc.

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