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[Nick Dedekind <1359802@xxxxxxxxxxxxxxxxxx>]

Not really sure how the suspend works, but maybe installing signal
handler for SIG_CONT maybe to force a refresh would work?

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https://bugs.launchpad.net/bugs/1359802

Title:
  header's timestamp can take a minute to update after resume from
  suspend

Status in “indicator-datetime” package in Ubuntu:
  In Progress

Bug description:
  Not the same as the bug #1328646, where the clock fell completely out-
  of-sync and never came back.

  This bug has a milder but similar symptom, the clock is set to update
  once per minute, so after resume from suspend it will still show the
  wrong time until that periodic update timer triggers.

  In addition to the periodic update, indicator-datetime should listen
  to powerd's Wakeup signal, or better yet, to
  com.canonical.Unity.Screen's DisplayPowerStateChange signal
  <http://bazaar.launchpad.net/~unity-system-compositor-team/unity-
  system-compositor/trunk/view/head:/src/dbus_screen.cpp#L100> to ensure
  that it makes the timestamp up-to-date whenever the screen is turned
  on.

  Reported by ogra and dednick in #ubuntu-touch.

  *edit:* also discussed by kgunn72 and aacid @
  https://code.launchpad.net/~nick-
  dedekind/unity8/lp1328646/+merge/231335

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