Bug 326017

Summary:	main battery mostly not detected correctly with secondary battery
Product:	[Unmaintained] solid	Reporter:	Timo Ollech <t-mo>
Component:	powermanagement	Assignee:	Dario Freddi <drf>
Status:	RESOLVED FIXED
Severity:	major	CC:	didier, emil.vanherp, Fuerst.Ulrich, kde, tetzlav
Priority:	NOR
Version:	4.11.2
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Timo Ollech 2013-10-14 17:37:30 UTC

For about two weeks now I've been using a secondary battery in my Thinkpad T61. Sometimes but not always when I resume from hibernation, KDE's powermanagement recognizes both batteries but still tells me my battery is run down to 0% and therefore goes back to hibernation within 30 seconds.
Especially since my university studies just started today this really sucks. I haven't figured out yet under which circumstances powerdevil (or upower? don't know which one's responsible) recognizes the second battery and when it doesn't. The battery applet shows both batteries most of the time while it still sends my laptop to hibernation immediately saying "the" battery's run out of power.
To complicate things further, sometimes the applet only shows the primary battery.

When I plug in my laptop to the power outlet once after resuming, KDE's powermanagement behaves correctly even when I plug it off again.

Possibly the bug really lies in the battery applet rather than the underlying powermanagement, but as I'm not sure I file it under powermanagement in general.

Reproducible: Sometimes

Steps to Reproduce:
no exact steps to reproduce, see above



/proc/version: Linux version 3.11.4-1-ARCH (tobias@T-POWA-LX) (gcc version 4.8.1 20130725 (prerelease) (GCC) ) #1 SMP PREEMPT Sat Oct 5 21:22:51 CEST 2013

Comment 1 Didier Raboud 2013-11-14 13:09:17 UTC

As I described on the Debian bugreport: http://bugs.debian.org/695966#10 I'm experiencing the same type of problems, namely: 

> With my Lenovo X220, when the additional battery is plugged in, the
> internal battery drains first (that's the hardware managing the
> drain-balancing I guess) and then PowerDevil insists to suspend the
> laptop to disk (as I configured it to suspend-to-disk if there's less
> than 4% of battery left). When waking up from suspend, powerdevil will
> insist to suspend to disk again, no matter what the global battery state
> is:
> 
> $ acpitool 
>   Battery #1     : Unknown, 0.00%
>   Battery #2     : Discharging, 54.94%, 02:31:00
> 
> (Applet shows 54%).
> 
> This looks somewhat similar to [0]. As 'upower --dump' was requested, I
> attached my output to this bugreport.
> 
> [0] https://bugzilla.redhat.com/show_bug.cgi?id=736835

I'm using KDE-Workspace 4.10.5 in Debian Jessie and would be very happy to help getting this solved, please ask!

Cheers, OdyX

Comment 2 tetzlav 2014-08-21 21:59:49 UTC

It seems to be the same bug:
https://bugs.kde.org/show_bug.cgi?id=253453

There is a patch, but not upstream.

Comment 3 Kai Uwe Broulik 2015-02-16 12:46:01 UTC

The patch mentioned in Comment #2 has been upstreamed.