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[Bug 1575038] Re: Connecting docking station reboots computer


Johannes Hansson, the next step is to fully reverse commit bisect from
kernel 4.4 to 4.6-rc6 in order to identify the last bad commit, followed
immediately by the first good one. Once this good commit has been
identified, it may be reviewed for backporting. Could you please do this

Please note, finding adjacent kernel versions is not fully commit

After the fix commit (not kernel version) has been identified, then
please mark this report Status Confirmed.

Thank you for your understanding.

Helpful bug reporting tips:

** Tags added: bios-outdated-a13 kernel-fixed-upstream-4.6-rc6 needs-

** 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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