touch-packages team mailing list archive

[Pat McGowan <pat.mcgowan@xxxxxxxxxxxxx>]

(see also comment #5 above)

sudo add-apt-repository ppa:colin-king/white
sudo apt-get update
sudo apt-get install cpustat

cpustat blocks on a select() system call. While the phone is not suspended it will log all CPU process activity every 2 seconds.  This will consume ~0.25% of the CPU, so in real terms that's almost nothing.  cpustat will not block the phone from deep sleep. The kernel will freeze it when the phone goes into deep sleep. please do the following:
 
adb into the phone and type:

nohup cpustat 2 > cpustat.log &
exit

then disconnect the USB and let it run.

Once the phone is drained, or whenever you want to stop the test,  copy
the cpustat.log over and we can analyze it.

-- 
You received this bug notification because you are a member of Ubuntu
Touch seeded packages, which is subscribed to powerd in Ubuntu.
https://bugs.launchpad.net/bugs/1372413

Title:
  Extensive battery drain on RTM

Status in the base for Ubuntu mobile products:
  In Progress
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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