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[Bug 1599264] Re: [SRU] "When power is critically low" setting does nothing


@Chris: Hmm.. I'm now inclined to think that we should drop the whole
page, since the point with it is to describe a control which no longer
exists. The suspend state is mentioned at other places in the desktop
guide, and maybe we should just add somewhere that the computer suspends
automatically when the power is critically low.

If you agree, can you please submit a MP along those lines? Then we can
continue talking there.

( It was not my intention to criticize you for thinking beyond the scope
of this bug. Actually I don't think you do, and even if you had, it
would have been a good thing. ;) )

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  [SRU] "When power is critically low" setting does nothing

Status in One Hundred Papercuts:
Status in ubuntu-docs package in Ubuntu:
Status in unity-control-center package in Ubuntu:
  Fix Released
Status in ubuntu-docs source package in Xenial:
  Won't Fix
Status in unity-control-center source package in Xenial:
Status in ubuntu-docs source package in Yakkety:
  Won't Fix
Status in unity-control-center source package in Yakkety:
  Fix Released
Status in ubuntu-docs source package in z-series:

Bug description:

  In unity-control-center (u-c-c) there is an option for taking an
  action when "Power is critically low".  The choices are "Hibernate" or
  "Power off".  Often Hibernate is a disabled option because of problems
  with hibernate on various systems.

  However - what to do in the event of a critically low power situation
  is now handled by Upowerd automatically and so making a choice in
  u-c-c does nothing at all.

  As such, leaving that option accessible to users will lead to

  This patch removes the option from the UI.

  [Test Case]

  On an unpatched machine with a battery (i.e. laptop) open the power
  panel in u-c-c (Power/Settings menu in the top right corner -> System
  Settings -> Power.  Note that the 2nd option down is "When power is
  critically low".

  Once this update is applied and u-c-c is closed and reopened, this
  option is no longer present.

  [Regression Potential]
  There are some deletions from the ui file and some corresponding code deletions from the associated c file (cc-power-panel.c).

  It is possible that extra code has been removed that could cause a
  crash or affect other options in the power panel.

  However, the changes are fairly small and easy to review.  Nothing
  looks out of place.  Also testing has not shown any problems.

  [Other Info]

  Verbal (IRC) +1 from design via mpt.
  +1 from docs team via mailing list.

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