This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
focal' to 'verification-done-focal'. If the problem still exists, change
the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-focal

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Packages, which is subscribed to linux-oem-5.6 in Ubuntu.
https://bugs.launchpad.net/bugs/1892678

Title:
  Fix non-working USB devices plugged during system sleep

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  Confirmed
Status in linux-oem-5.6 package in Ubuntu:
  Won't Fix
Status in linux source package in Focal:
  Won't Fix
Status in linux-oem-5.6 source package in Focal:
  Fix Committed

Bug description:
  [Impact]
  Some USB devices aren't working if they are plugged under system sleep.

  [Fix]
  Consider xHCI PORTSC CAS bit over other conditions.

  [Test]
  Plug or re-plug USB devices during system sleep. USB devices always work
  after system resume.

  [Regression Potential]
  There could be devices that depends on the old (but wrong) behavior. 
  However it's really unlikely and it's against xHCI spec, we can deal 
  with those quirky devices if any.

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