Public bug reported:
[Impact]
On TGL systems, PCI devices stops working after system resume. One
notable case is that USB controller stops working after s2idle.
[Fix]
Serialize e1000e PM ops and makes e1000e is the last to suspend the
first to resume.
[Test]
Issue is not reproducible on 3000 cycles suspend tests.
[Where problems could occur]
Suspend and resume will be a bit slower. Other than that there's no real
behavior change.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux-oem-5.10 (Ubuntu)
Importance: Undecided
Status: Invalid
** Affects: linux-oem-5.10 (Ubuntu Focal)
Importance: High
Status: Confirmed
** Tags: oem-priority originate-from-1910517 somerville
** Tags added: oem-priority originate-from-1910517 somerville
** Changed in: linux-oem-5.10 (Ubuntu)
Status: New => Confirmed
** Changed in: linux-oem-5.10 (Ubuntu)
Status: Confirmed => Invalid
** Also affects: linux-oem-5.10 (Ubuntu Focal)
Importance: Undecided
Status: New
** Changed in: linux-oem-5.10 (Ubuntu Focal)
Status: New => Confirmed
** Changed in: linux-oem-5.10 (Ubuntu Focal)
Importance: Undecided => High
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https://bugs.launchpad.net/bugs/1919321
Title:
Fix system sleep on TGL systems with Intel ME
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