[Bug 1906857] Re: XPS 9310 Developer Edition not booting when connected to WD19TB dock

[Craig]

Setting target to plymouth based on description here:
https://wiki.ubuntu.com/Bugs/FindRightPackage#During_boot

** Tags added: dell

** Tags added: dock

** Package changed: ubuntu => plymouth (Ubuntu)

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https://bugs.launchpad.net/bugs/1906857

Title:
  XPS 9310 Developer Edition not booting when connected to WD19TB dock

Status in plymouth package in Ubuntu:
  New

Bug description:
  With a XPS 9310 Developer Edition laptop (using pre-installed Ubuntu
  20.04 from Dell with all updates, including LVFS updates for laptop
  and dock) is powered off and connected to the WD19TB docking station,
  it will not boot when I power it on.

  When I press the power button (on the laptop or dock) the screen on
  the laptop becomes active, shows a dell logo, but just stays stuck
  that way indefinitely.

  If I press and hold the power button for 10+ seconds the computer can
  be forcefully shut down. When I start it up again after forcing it
  down I then see the Dell logo, but the computer continues where the
  next screen I see is a GRUB boot menu. From there I can choose
  "Ubuntu" and the computer boots normally with no problems.

  Another way to make everything work is before booting the computer,
  unplug the Thunderbolt cable from the laptop. Then it boots up
  normally and I can connect the Thunderbolt cable again and things work
  normally from there.

  I am seeking a solution so I can leave the laptop connected to the
  docking station and have it boot up normally on the first attempt (no
  forced shutdowns or having disconnect/reconnect things).

  Some details:
  OS: Ubuntu 20.04 factory installed from Dell with all updates as of this date.
  Kernel: 5.6.0-1034-oem
  Laptop: XPS 9310 Developer Edition
  Dock: WD19TB

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