KDE power applet shows incorrect remaining battery percentage

[Gert van Dijk]

Sometimes, the KDE Power applet indicates an incorrect remaining battery percentage for my laptop. The information in /proc/acpi/battery are correct and also my platform-specific (Thinkpad) kernel module shows the correct info. Also running 'upower -d' (output partly shown in the attached screenshot) shows the correct information. I'ver attached a screenshot in which you can see both values of the remaining percentage don't match up.

I would assume the KDE power applet would display the same percentage, instead, it seems frozen to a previous state.

I haven't found a path to reproduce; it just happens from time to time and probably I am not noticing it always. Both when discharging and charging it might freeze.

Hardware: Thinkpad T61p 6457, single battery installed.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: kde-workspace-bin 4:4.7.1-0ubuntu5
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Fri Oct 21 01:19:35 2011
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110930)
ProcEnviron:
 LANGUAGE=en_GB:en_US:en
 LANG=nl_NL.utf8
 SHELL=/bin/bash
SourcePackage: kde-workspace
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[jhoechtl (johann-hoechtl)]

Also affected. I assume this is related, if not the same as
https://bugs.kde.org/show_bug.cgi?id=287952

Doesn't seem anybody working on it. It is even undecided if this problem is Kubuntu specific.

[Harald Sitter (apachelogger)]

Ought to be fixed in >= 12.10