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[Bug 109943]

To: desktop-packages@xxxxxxxxxxxxxxxxxxx
From: Philip-chee <109943@xxxxxxxxxxxxxxxxxx>
Date: Wed, 17 Dec 2014 16:10:14 -0000
Reply-to: Bug 109943 <109943@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx

WAG: Just a guess. Go to about:config and set the following preferences:
layers.acceleration.disabled -> true
layers.offmainthreadcomposition.enabled -> false

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https://bugs.launchpad.net/bugs/109943

Title:
  Thunderbird: high CPU usage from progress bars

Status in Mozilla Thunderbird Mail and News:
  Confirmed
Status in thunderbird package in Ubuntu:
  Confirmed

Bug description:
  Binary package hint: mozilla-thunderbird

  When sending a simple and short email with Thunderbird via SMTP the
  CPU is used intensively. This seems not to be necessary. If the
  sending failed and an corresponding error message dialog appears, the
  CPU is still being used. When pressing ok to close the error dialog
  the CPU is fine. This suggests it might be related specifically to the
  progress bar.  Such behavior is especially annoying on a laptop where
  you can hear the CPU usage because of a starting fan.

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