After attempting to work around this in ubuntu-system-settings, I don't
think it's possible. The problem seems to be upower pushing dbus-
daemon's load high enough that slows down or blocks dbus calls.
** Also affects: upower (Ubuntu)
Importance: Undecided
Status: New
** Package changed: upower (Ubuntu) => upower (Ubuntu RTM)
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https://bugs.launchpad.net/bugs/1337200
Title:
High CPU due to excessive device changed signals from upower
Status in “ubuntu-system-settings” package in Ubuntu:
In Progress
Status in “ubuntu-system-settings” package in Ubuntu RTM:
New
Status in “upower” package in Ubuntu RTM:
New
Bug description:
I've noticed this a few times but reproduced it today explicitly to
file a bug.
Open system settings.
Perhaps open other apps (not necessarily required) on my mako I ran BBC News
webapp.
Put phone on charger, go to bed
8 hours later, wake phone up, switch to system settings
UI in u-s-s is unresponsive, other apps are fine.
Tapping icons in the main screen of u-s-s yields no result for a long time,
sometimes swiping away from the app and coming back is required to make it
respond.
It feels like the app has locked up.
Indeed, looking at top, I see it's eating a core while doing
"nothing".
top - 08:47:30 up 9:55, 2 users, load average: 1.30, 1.41, 1.61
Tasks: 249 total, 2 running, 247 sleeping, 0 stopped, 0 zombie
%Cpu(s): 51.5 us, 2.9 sy, 0.0 ni, 45.4 id, 0.2 wa, 0.0 hi, 0.0 si, 0.0
st
KiB Mem: 1878632 total, 1818100 used, 60532 free, 121936 buffers
KiB Swap: 524284 total, 0 used, 524284 free. 810184 cached Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
4220 phablet 20 0 350900 130908 29404 R 99.6 7.0 3:40.49
system-settings
11266 phablet 20 0 5956 1224 772 R 2.6 0.1 0:00.54 top
754 message+ 20 0 212124 207364 748 S 1.6 11.0 8:59.75
dbus-daemon
1124 root 20 0 186560 16976 12608 S 0.6 0.9 0:34.08
unity-system-co
1162 9999 20 0 10904 828 488 S 0.6 0.0 0:02.55
sensors.qcom
1164 root 0 -20 7572 548 396 S 0.6 0.0 4:48.69
mpdecision
4413 phablet 20 0 582656 72904 52940 S 0.6 3.9 0:08.16
webapp-containe
1171 root 20 0 8244 1624 1224 S 0.3 0.1 0:08.97 Binder_2
1675 root 20 0 51532 6140 4736 S 0.3 0.3 0:54.45
NetworkManager
2521 phablet 20 0 44908 2424 2016 S 0.3 0.1 0:02.08
indicator-messa
2565 phablet 20 0 566332 127124 56824 S 0.3 6.8 3:55.87 unity8
2602 phablet 20 0 104328 8900 7296 S 0.3 0.5 0:29.69
pay-service
Not much in the log.
2014-07-02 17:00:50,867 - WARNING -
file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/ListItems/SingleControl.qml:59:14:
Unable to assign [undefined] to bool
creating surface at (0, 58) with size (768, 1222) with title 'Window
1'2014-07-02 17:00:51,118 - CRITICAL -
../../../../lib/SignOn/connection-manager.cpp 106 setupSocketConnection p2p
error: QDBusError("org.freedesktop.DBus.Error.FileNotFound", "Failed to connect
to socket /run/user/32011/signond/socket: No such file or directory") 1
2014-07-03 00:12:28,936 - CRITICAL -
../../../../lib/SignOn/connection-manager.cpp 106 setupSocketConnection p2p
error: QDBusError("org.freedesktop.DBus.Error.FileNotFound", "Failed to connect
to socket /run/user/32011/signond/socket: No such file or directory") 1
2014-07-03 00:12:29,902 - WARNING -
file:///usr/lib/arm-linux-gnueabihf/qt5/qml/Ubuntu/Components/ListItems/SingleControl.qml:59:14:
Unable to assign [undefined] to bool
creating surface at (0, 58) with size (768, 1222) with title 'Window
1'2014-07-03 00:12:30,176 - CRITICAL -
../../../../lib/SignOn/connection-manager.cpp 106 setupSocketConnection p2p
error: QDBusError("org.freedesktop.DBus.Error.FileNotFound", "Failed to connect
to socket /run/user/32011/signond/socket: No such file or directory") 1
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