[Bug 1201865] Re: upstart on nexus4 is frequently writing :sys:power_supply-device-changed event messages

[Steve Langasek]

Furthemore, these log entries seem to be courtesy of the session init
itself (so, the output of upstart) and running init with -q does not
suppress the messages.  So yeah, this is an upstart bug after all.

** Package changed: ubuntu-touch-session (Ubuntu) => upstart (Ubuntu)

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Title:
  upstart on nexus4 is frequently writing :sys:power_supply-device-
  changed event messages

Status in “upstart” package in Ubuntu:
  Triaged

Bug description:
  Running fatrace on today's ubuntu touch images on the nexus4 I'm
  seeing very frequent upstart messages in  /var/log/upstart/ubuntu-
  touch-session-phablet.log

  To reproduce:

  sudo apt-get install fatrace
  cd /
  fatrace  -c
  init(1): W /var/log/upstart/ubuntu-touch-session-phablet.log
  init(1): W /var/log/upstart/ubuntu-touch-session-phablet.log
  init(1): W /var/log/upstart/ubuntu-touch-session-phablet.log
  init(1): W /var/log/upstart/ubuntu-touch-session-phablet.log

  ..every second or so an new message is written on an idle phone.

  And  tail -f /var/log/upstart/ubuntu-touch-session-phablet.log  shows:

  event_finished: Finished :sys:cpu-device-offline event
  event_new: Pending :sys:power_supply-device-changed event
  Handling :sys:power_supply-device-changed event
  event_finished: Finished :sys:power_supply-device-changed event
  event_new: Pending :sys:cpu-device-online event
  Handling :sys:cpu-device-online event
  event_finished: Finished :sys:cpu-device-online event
  event_new: Pending :sys:cpu-device-offline event
  Handling :sys:cpu-device-offline event
  event_finished: Finished :sys:cpu-device-offline event
  event_new: Pending :sys:cpu-device-online event
  Handling :sys:cpu-device-online event
  event_finished: Finished :sys:cpu-device-online event
  event_new: Pending :sys:power_supply-device-changed event
  Handling :sys:power_supply-device-changed event
  event_finished: Finished :sys:power_supply-device-changed event
  event_new: Pending :sys:cpu-device-offline event
  Handling :sys:cpu-device-offline event
  event_finished: Finished :sys:cpu-device-offline event
  event_new: Pending :sys:cpu-device-online event
  Handling :sys:cpu-device-online event

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