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Message #149290
[Bug 1480877] Re: Access points' "PropertiesChanged" dbus signals freeze UI on mobile devices
** Changed in: location-service (Ubuntu RTM)
Status: Triaged => In Progress
** Changed in: location-service (Ubuntu RTM)
Assignee: Scott Sweeny (ssweeny) => Thomas Voß (thomas-voss)
** Branch linked: lp:~thomas-voss/location-service/fix-match-rule-leak
** Also affects: dbus-cpp (Ubuntu)
Importance: Undecided
Status: New
** Changed in: dbus-cpp (Ubuntu)
Importance: Undecided => High
** Changed in: dbus-cpp (Ubuntu)
Status: New => In Progress
** Changed in: dbus-cpp (Ubuntu)
Assignee: (unassigned) => Thomas Voß (thomas-voss)
** Branch linked: lp:~thomas-voss/dbus-cpp/fix-signal-subscriptions
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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 dbus-cpp package in Ubuntu:
In Progress
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:
In Progress
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