------- Comment From h.carst...@de.ibm.com 2020-03-20 05:34 EDT-------
(In reply to comment #16)
> Let me just double check with you about disabling CONFIG_PM, as it also
> supports runtime power management of devices. If CONFIG_PM is disabled
> devices will not be put into low power states when idle.

Yes, that's perfectly fine. There is now low power state for devices on
s390.

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https://bugs.launchpad.net/bugs/1867753

Title:
  [Ubuntu 20.04] Unset HIBERNATION and PM kernel config options for
  focal

Status in Ubuntu on IBM z Systems:
  Incomplete
Status in linux package in Ubuntu:
  Incomplete

Bug description:
  Addl change required for kernel config.

  
  from
  CONFIG_HIBERNATION=y
  CONFIG_PM=y

  to
  #CONFIG_HIBERNATION is not set
  #CONFIG_PM is not set

  
  hope that will be the last ticket for 20.04...

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