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Tasklist

FS#49580 - [linux] 4.5.x Kernel generates too many battery events

Attached to Project: Arch Linux
Opened by Alcasa MZ (alcasa) - Sunday, 05 June 2016, 21:33 GMT
Last edited by Eli Schwartz (eschwartz) - Sunday, 15 October 2017, 16:39 GMT
Task Type Bug Report
Category Kernel
Status Closed
Assigned To Tobias Powalowski (tpowa)
Architecture x86_64
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
In Idle the xfce-powermanager plugin will use up to 10% of CPU. In the indicator menu, the estimated battery time is update every 0,5s. This bug has before been reported for Ubuntu here: https://bugs.launchpad.net/ubuntu/+source/upower/+bug/1420395
Is seems to be a kernel configuration problem.
These frequent battery events pose an optical problem in GUI and less frequent polling could enhance power usage.

Additional info:
Kernel - 4.5.4-1-ARCH (default kernel)
upower - 0.99.4-2

System:
Toshiba Z20T - Intel(R) Core(TM) M-5Y51 CPU @ 1.10GHz
Two Batteries in Tablet and in Dock (might enhance the problem greatly)

Battery Log example:
max@Z20T ~ % upower -m
Monitoring activity from the power daemon. Press Ctrl+C to cancel.
[23:30:34.413] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:34.414] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:34.414] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:34.437] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:34.437] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:34.437] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:35.419] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:35.419] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:35.419] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:35.441] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:35.441] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:35.441] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:36.428] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:36.428] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:36.428] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:36.438] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:36.439] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:36.439] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:37.436] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:37.437] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:37.437] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:37.444] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:37.444] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:37.444] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:38.439] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:38.439] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:38.440] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:39.442] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:39.442] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:39.442] device changed: /org/freedesktop/UPower/devices/battery_BAT1
[23:30:39.453] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:39.454] device changed: /org/freedesktop/UPower/devices/battery_BAT2
[23:30:39.454] device changed: /org/freedesktop/UPower/devices/battery_BAT2


Steps to reproduce:
1. Execute upower -m on applicable system.
This task depends upon

Closed by  Eli Schwartz (eschwartz)
Sunday, 15 October 2017, 16:39 GMT
Reason for closing:  No response
Comment by teefax (teefax) - Sunday, 05 February 2017, 07:26 GMT
I experience the same issue with both the linux-lts and latest (4.9) linux kernel. The bug causes the KDE battery icon to constantly "blink" and results in other issues related to power management.

Monitoring activity from the power daemon. Press Ctrl+C to cancel.
[08:23:30.373] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:30.374] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:30.374] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:30.374] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:32.514] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:32.515] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:32.515] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:32.515] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:32.515] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:34.780] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:34.780] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:34.780] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:34.780] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:37.046] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:37.046] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:37.046] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:37.046] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:37.046] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:39.311] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:39.312] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:39.312] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:39.312] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:41.451] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:41.452] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:41.452] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:41.452] device changed: /org/freedesktop/UPower/devices/battery_BAT0
[08:23:41.452] device changed: /org/freedesktop/UPower/devices/battery_BAT0
Comment by mattia (nTia89) - Monday, 02 October 2017, 20:26 GMT
I cannot reproduce the issue, probably hardware-related.

Is this issue still valid with latest kernel?

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