** Also affects: linux (Ubuntu Kinetic)
   Importance: Undecided
       Status: New

** Also affects: linux-oem-5.17 (Ubuntu Kinetic)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Kinetic)
       Status: New => Fix Released

** Changed in: linux-oem-5.17 (Ubuntu Kinetic)
       Status: New => Invalid

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https://bugs.launchpad.net/bugs/1973104

Title:
  e1000e report hardware hang

Status in HWE Next:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux-oem-5.17 package in Ubuntu:
  Invalid
Status in linux source package in Jammy:
  Fix Released
Status in linux-oem-5.17 source package in Jammy:
  Fix Released
Status in linux source package in Kinetic:
  Fix Released
Status in linux-oem-5.17 source package in Kinetic:
  Invalid

Bug description:
  [Impact]
  e1000e hardware unit hang after s2idle
  May 06 15:34:49 ubuntu kernel: e1000e 0000:00:1f.6 enp0s31f6: Detected 
Hardware Unit Hang:
                                   TDH <1>
                                   TDT <5>
                                   next_to_use <5>
                                   next_to_clean <1>
                                 buffer_info[next_to_clean]:
                                   time_stamp <1000587f0>
                                   next_to_watch <1>
                                   jiffies <1000589c0>
                                   next_to_watch.status <0>
                                 MAC Status <40080283>
                                 PHY Status <796d>
                                 PHY 1000BASE-T Status <3800>
                                 PHY Extended Status <3000>
                                 PCI Status <10>

  [Fix]
  Below commits fix this issue which have been included in v5.19-rc8
  
https://patchwork.ozlabs.org/project/intel-wired-lan/patch/20220508070905.1878172-1-sasha.nef...@intel.com/

  6cfa45361d3e Revert "e1000e: Fix possible HW unit hang after an s0ix exit"
  b49feacbeffc e1000e: Enable GPT clock before sending message to CSME

  
  [Test]
  Verified on the target machine, and confirmed the issue is gone.

  [Where problems could occur]
  The impact is low, it keeps the GPT clock enabled for CSME when 
e1000e_pm_resume() is called. With the new fix, the old workaround could be 
removed. I can't see this may introduce any regression.

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