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[Michael Terry <michael.terry@xxxxxxxxxxxxx>]

I thought I mentioned in comment #7 that I had already debugged this to
that point.  The delay is happening in the handling of the power down-
press.  The call to greeter.show() is synchronous, and Qt seems to block
handling of the power-up event until the show() call (and thus the
power-down press event) is done.  So if greeter.show() takes too long
(as it freequently does when we load the background from disk), we
trigger the 2s timeout for the shutdown dialog.

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https://bugs.launchpad.net/bugs/1383277

Title:
  Power dialog sometimes shown on resume

Status in “unity8” package in Ubuntu:
  Triaged
Status in “unity8” package in Ubuntu RTM:
  Triaged

Bug description:
  Unfortunately no good steps to reproduce, other than "resume your
  phone", from time to time you'll get the power dialog displayed on
  screen.

  The reason for this could be twofold: a) you pressed the power button
  in your pocket b) input is confused and keyUp event does not reach
  unity8.

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