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While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:

apport-collect 1846470

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.

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 Bionic)
       Status: New => Incomplete

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

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https://bugs.launchpad.net/bugs/1846470

Title:
  xHCI on AMD Stoney Ridge cannot detect USB 2.0 or 1.1 devices.

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

Bug description:
  [Impact]
  xHCI on AMD Stoney Ridge cannot detect USB 2.0 or 1.1 devices. 

  [Fix]
  The xHCI in question doesn't have proper support for D0 PME, so strip it from 
PM capability.

  [Test]
  The xHCI can detect USB 2.0 and USB 1.1 device with the fix.

  [Regression Potential]
  Low. Has limited scope and doesn't touch any driver code.

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