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Message #132451
[Bug 1480877] Re: Access points' "PropertiesChanged" dbus signals freeze UI on mobile devices
I have the bug again.
I'm on rc-proposed r102, krillin, using network manager 0.9.10.0-4ubuntu15.1.7
Some stats:
Every 10-15 seconds I get a burst of 50 PropertiesChanged which lock my phone for about 4 seconds.
So, every 15 seconds, 4 seconds of frozen UI.
"nmcli d" reports WiFi as connected to the office network (as it should
be).
this is the "grep NetworkManager /var/log/syslog" since I got to the office (I don't remember having this issue at home this morning)
http://pastebin.ubuntu.com/12123687/
this is the output of "dbus-monitor --system" in one of the 4 seconds freezes.
http://pastebin.ubuntu.com/12123712/
the output of the wifi script is
http://pastebin.ubuntu.com/12123727/
After getting those logs I disabled WiFi and the freezes disappeared (and the flooding in dbus-monitor with them)
Then I reenabled WiFi, it took something like 1 minute before the phone stopped being laggy like hell (while the wifi list was populating in the indicator panel)....AND THE PROBLEM IS BACK :)
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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
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/indicator-network/+bug/1480877/+subscriptions
References