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Message #118431
[Bug 1480877] Re: Access points' "PropertiesChanged" dbus signals freeze UI on mobile devices
re comment #68 and maliit access networking, from Albert on bug #1515712
> We should figure out why we are even doing any network stuff at all,
as we probably shouldn't be.
It comes from the fact that QtMultimedia uses network transparent
methods to load urls used for audio playing, so even if in the keyboard
we're using a local sound for audio feedback, QtMultimedia ends up
bringing up the network backend because it uses those network
transparent methods.
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https://bugs.launchpad.net/bugs/1480877
Title:
Access points' "PropertiesChanged" dbus signals freeze UI on mobile
devices
Status in Canonical System Image:
Confirmed
Status in Unity 8:
New
Status in indicator-network package in Ubuntu:
Incomplete
Status in network-manager package in Ubuntu:
Incomplete
Status in qtbase-opensource-src package in Ubuntu:
Confirmed
Status in buteo-syncfw package in Ubuntu RTM:
New
Status in location-service package in Ubuntu RTM:
Triaged
Status in maliit-framework package in Ubuntu RTM:
New
Status in network-manager package in Ubuntu RTM:
Incomplete
Status in sync-monitor package in Ubuntu RTM:
New
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