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apport-collect 1868217

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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.

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

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

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https://bugs.launchpad.net/bugs/1868217

Title:
   Make Dell WD19 dock more reliable after suspend

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in linux-oem-osp1 package in Ubuntu:
  New
Status in linux source package in Bionic:
  Won't Fix
Status in linux-oem-osp1 source package in Bionic:
  New
Status in linux source package in Eoan:
  Incomplete
Status in linux-oem-osp1 source package in Eoan:
  Won't Fix
Status in linux source package in Focal:
  Incomplete
Status in linux-oem-osp1 source package in Focal:
  Won't Fix

Bug description:
  [Impact]
  When Dell WD19 dock connects multiple USB3 storage devices, the USB Hub
  used internally may stop working after suspend.

  [Fix]
  Disable LPM on the Realtek USB Hub, and let xHCI controller make sure
  the link state transition is completed.

  [Test]
  After applying the patches, the Dell WD19 works reliably after thousand
  times for suspend/resume cycle.

  [Regression Potential]
  Low. This replaces the currently "msleep" way with more robust
  mechanism. I also test other systems and nothing breaks.

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