Public bug reported:
===SRU Justification===
[Impact]
xHC stays at D0 when system is in S3. Unfortunately D0 can't generate PME#
wakeup event, so USB device can't wake the system.
[Test]
Intel NUC can't be waken up by USB keyboard when the system is in S3.
With the patch, USB keyboard can wake up the system.
[Regression Potential]
Low.
The issue starts appearing from Gemini Lake, older generation hardware
shouldn't get affected.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Confirmed
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https://bugs.launchpad.net/bugs/1759511
Title:
Fix an issue that when system in S3, USB keyboard can't wake up the
system.
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