desktop-packages team mailing list archive

[Andrea Bernabei <andrea.bernabei@xxxxxxxxxxxxx>]

It seems I hit an evolved version of this bug.

My phone is right now unusable, dbus-daemon taking 99% of the cpu, and
dbus-monitor shows about 30 signals like this:

signal sender=:1.0 -> dest=(null destination) serial=78512 path=/com/ubuntu/Upstart; interface=com.ubuntu.Upstart0_6; member=EventEmitted
   string "dbus"
   array [
      string "SIGNAL=PropertiesChanged"
      string "BUS=system"
      string "INTERFACE=org.freedesktop.NetworkManager.AccessPoint"
      string "OBJPATH=/org/freedesktop/NetworkManager/AccessPoint/2281"
      string "SENDER=:1.8"
   ]


Every 2-3 seconds I get a new burst of 30-ish signals.

The phone is so slowed down it takes about 15-20 seconds (and some
patience) to be able to just swipe away the lockscreen.

I'll try not to reboot the device right now so that we can keep
debugging it and hopefully get rid of this beast :)

so if there's anyone in the audience who'd like me to get some more
useful logs, please shout! :)

-- 
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Packages, which is subscribed to network-manager in Ubuntu.
https://bugs.launchpad.net/bugs/1480877

Title:
  Access points' "PropertiesChanged" dbus signals freeze UI on mobile
  devices

Status in indicator-network package in Ubuntu:
  New
Status in network-manager package in Ubuntu:
  Confirmed

Bug description:
  Krillin, rc-proposed, r83

  
  DESCRIPTION:
  I've been trying to track down the cause of the occasional UI freezes on my Krillin device, and I noticed that whenever the UI freezes for 2-4 seconds, I get a burst of "PropertiesChanged" signals in dbus-monitor

  Here's a log of what's shown in dbus-monitor:
  http://pastebin.ubuntu.com/11992322/

  I'd guess the problem is in the code that actually catches the signals
  and acts accordingly.

  HOW TO REPRODUCE: 
  1) Move to a place where many wifi hotspots are available
  2) Connect the device via USB and run "phablet-shell" and then "dbus-monitor"
  3) Use the device while keeping an eye on dbus-monitor output

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