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[Colin Ian King <1772563@xxxxxxxxxxxxxxxxxx>]

** Changed in: fwts/xenial
       Status: New => Fix Released

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https://bugs.launchpad.net/bugs/1772563

Title:
  False alarms raised in bionic because 4.15 kernel needs
  "pm_debug_messages" to be enabled

Status in Firmware Test Suite:
  Fix Released
Status in Firmware Test Suite bionic series:
  Fix Released
Status in Firmware Test Suite cc series:
  Fix Released
Status in Firmware Test Suite xenial series:
  Fix Released
Status in fwts package in Ubuntu:
  Fix Released
Status in fwts source package in Xenial:
  Fix Released
Status in fwts source package in Bionic:
  Fix Released

Bug description:
  == SRU justfication, BIONIC (and XENIAL too) ==

  [ update - doing the SRU for XENIAL too, Fri, 10th Aug 2018 ]

  While performing Hibernate stress tests on a device with 18.04 server
  installed, we got some failures with FWTS and reported them in
  lp:1769809.

  Even though some of these original failures are due to a bug in
  Checkbox, some others are due to the fact that the Bionic kernel 4.15
  has a parameter "pm_debug_messages" that needs to be enabled.

  If you run the stress tests on this device, you will end up with 4
  PASS and 2 FAIL. But if you run this command before running the stress
  tests:

   $ echo 1 | sudo tee -a /sys/power/pm_debug_messages

  then all tests are marked as PASSED.

  (see comment #9 in the bug above for more information)

  It looks like this is something that should be taked into account by
  FWTS. (but I might be wrong!)

  Thanks!

  == Fix ==

  Upstream commits:

  lib: fwts_set: fix API for fwts_set, add fwts_set_int
  lib: add small helpers top get/set
  acpi: s3: force enable /sys/power/pm_debug_messages (LP: #1772563)
  acpi: s4: also check for file based swap files
  acpi: s4: force enable /sys/power/pm_debug_messages (LP: #1772563)
  acpi: s3power: force enable /sys/power/pm_debug_messages (LP: #1772563)

  == Regression Potential ==

  Minimal, this fix enables a setting in /sys/power/pm_debug_messages
  and then returns it back to the initial saved value. At most this
  could leave debug on if fwts aborts during the test, but this will not
  affect the behavior of a running system.

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