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[Bug 1480877] Re: Access points' "PropertiesChanged" dbus signals freeze UI on mobile devices

 

More details on the situation in the morning:

when I got to the office I waited more than 1h for it to autoconnect to WiFi, but it didn't.
The WiFi connection at 10:40 was forced by me, I went to settings -> Wifi, and tapped on the office network.


About the bridge, can I disable that after I have the bug? I don't have a way to reproduce this bug on demand, so the only way to make sure it's there is to see the stuttering. The alternative is disable the bridge and then check the number of PropertiesChanged on the system bus, to know if the bug is being triggered ...

About the session bus, the output is basically a copy of what's in the
system bus, as previous logs show.

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https://bugs.launchpad.net/bugs/1480877

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

Status in indicator-network package in Ubuntu:
  Incomplete
Status in network-manager package in Ubuntu:
  Incomplete

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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References