touch-packages team mailing list archive

[Colin Ian King <1372413@xxxxxxxxxxxxxxxxxx>]

I've written a bash script to periodically grab battery capacity levels
over some of this afternoon and projected the expected duration (making
an assumption  the battery drain is linear, which it is not, i know
that).  Anyhow, I predict > 30+ hours of idle on a default clean install
on deep sleep.  See attached spreadsheet.  I will update the bug with
the complete data tomorrow.


** Attachment added: "mako-battery-drain.ods"
   https://bugs.launchpad.net/ubuntu/+source/powerd/+bug/1372413/+attachment/4299366/+files/mako-battery-drain.ods

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https://bugs.launchpad.net/bugs/1372413

Title:
  Extensive battery drain on RTM

Status in the base for Ubuntu mobile products:
  Confirmed
Status in powerd package in Ubuntu:
  Confirmed

Bug description:
  Mako, RTM 1

  Since upgrading to RTM the battery life is really poor. What used to
  be a battery drain of 5-10% per hour (which is still high) is now
  10-15% per hour. Sometimes the phone runs really hot, so there seem to
  be something going on in the background that is consuming power. I
  mostly have bluetooth, GPS (which isn't always working), wifi and
  cellular on, but that's no difference from when I was running 'devel-
  proposed' with MultiROM with much less battery consumption.

  As an example, I started with a full charge at 7am. After some web
  surfing (<15 mins) and watching a couple of youtube videos (on wifi)
  battery was down to 66% at 9:15. That's 34% in just over two hours! I
  recharged again before lunch and had the phone idle until coming back
  1 hour and 45 mins later to find only 75% of battery left, this time
  without the phone running particularly hot.

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