Battery level detected incorrectly

Bug #569065 reported by Anders Sjölander on 2010-04-23
92
This bug affects 21 people
Affects Status Importance Assigned to Milestone
gnome-power
New
Medium
gnome-power-manager (Ubuntu)
Low
Unassigned

Bug Description

Binary package hint: gnome-power-manager

When I disconnect the power adapter from my laptop, I get a notification saying that I have less than 4% battery power remaining and that the system needs to be shut down, even though my battery is fully charged. Also, the battery icon looks like it's empty but if I open the battery info window, it shows up as being fully charged. The system doesn't shut down, only warns about it.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: gnome-power-manager 2.30.0-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic-pae 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic-pae i686
NonfreeKernelModules: fglrx
Architecture: i386
Date: Fri Apr 23 17:33:01 2010
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GnomeSessionSuspendInhibited: No
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
MachineType: TOSHIBA Satellite L450D
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic-pae root=UUID=aaa535ec-f34e-4129-8f34-544c817c9746 ro quiet splash
ProcEnviron:
 LANG=sv_SE.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-power-manager
dmi.bios.date: 11/17/2009
dmi.bios.vendor: TOSHIBA
dmi.bios.version: V1.20
dmi.board.name: NBWAE
dmi.board.vendor: TOSHIBA
dmi.board.version: 1.00
dmi.chassis.asset.tag: *
dmi.chassis.type: 10
dmi.chassis.vendor: TOSHIBA
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnTOSHIBA:bvrV1.20:bd11/17/2009:svnTOSHIBA:pnSatelliteL450D:pvrPSLY5E-022013N5:rvnTOSHIBA:rnNBWAE:rvr1.00:cvnTOSHIBA:ct10:cvrN/A:
dmi.product.name: Satellite L450D
dmi.product.version: PSLY5E-022013N5
dmi.sys.vendor: TOSHIBA

Anders Sjölander (thezood) wrote :
Pedro Villavicencio (pedro) wrote :

Thank you for taking the time to report this bug and helping to make Ubuntu better. A new version of GNOME Power Manager is available on Maverick and we are wondering if this bug is still an issue for you with that version? Could you please test and comment back? Thanks in advance.

Changed in gnome-power-manager (Ubuntu):
status: New → Incomplete
Anders Sjölander (thezood) wrote :

Yes and no; when I unplug the cable, a dialog comes up saying that "Batteri power in laptop is critically low. The computer will be put in sleep mode soon if it's not plugged in to an external power source" and a notification saying "0:02 remain...". But the battery indicator applet shows the correct amount of power.

Launchpad Janitor (janitor) wrote :

[Expired for gnome-power-manager (Ubuntu) because there has been no activity for 60 days.]

Changed in gnome-power-manager (Ubuntu):
status: Incomplete → Expired
Anders Sjölander (thezood) wrote :

This bug is still present in the latest updates of Ubuntu 10.10. Not a huge issue but still kind of unaestetical. Hope it's OK if I reopen it.

Changed in gnome-power-manager (Ubuntu):
status: Expired → New
Jose M (punksolid) wrote :

This bug also affects the Toshiba Satellite L455D-SP5012M in any Ubuntu since 9.10 to 10.10

Colin Rice (dah4k0r) wrote :

Lenovo Thinkpad T410 as well

Matthew Stephenson (bobstay) wrote :

Lenovo T510 here too.

I think I remember reading somewhere that it might be caused by a chip which can be configured to report the battery parameters in either watt-hours or amp-hours, and somewhere along the line the units get confused or the chip is changed from one unit to another. I can't find where I read this, but it might be worth investigating.

Changed in gnome-power:
importance: Unknown → Medium
status: Unknown → New
Changed in gnome-power-manager (Ubuntu):
importance: Undecided → Low
status: New → Triaged
Matthias Schmidt (mschmidt) wrote :

Still present on Ubuntu 11.04 amd64 with my Thinkpad X220. After resume the battery icon is wrong (empty, red box) even if the battery is completely charged.

Matthias Schmidt (mschmidt) wrote :

Screenshot attached.

Matthias Schmidt (mschmidt) wrote :

I installed oneiric from today and the problem is gone. So IMO this bug report can be closed.

Fabio Machado (fabio-machado) wrote :

Not everyone is willing to upgrade to Oneiric as just yet. I have a 10.04 in a Lenovo T410 and this is far the most stable Ubuntu version I have ever used.
I confirm that this bug affects me as well and as Colin mentioned, restarting upowerd seemed to temporarily fix the problem.

Kenrick Bingham (loxo) wrote :

Same here, wanting continue to use the LTS version 10.04 on my ThinkPad X201.

Duplicate of bug #626025?

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