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Message #150638
[Bug 1480877] Re: Access points' "PropertiesChanged" dbus signals freeze UI on mobile devices
I changed my phones image channel, tested (with a few specific test apps
I have for QNAM & friends) that new patch and didn't see any thing too
wrong.
Although I am seeing heaps of GetAll calls that do not need to happen
(even for non nm managed interfaces - rmnet). Attached patch
simplifies/optimizes more. Reduces the number of blocking calls from
about 50 to ~4 when default route changes.
** Patch added: "net-bearer-nm-disconnect-ap-signals5.patch"
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1480877/+attachment/4525013/+files/net-bearer-nm-disconnect-ap-signals5.patch
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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:
In Progress
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