laptop powers down after first battary is empty but 2nd is still full

[Matthias]

ubuntu 11.10 64bit out of the box installation. using btrfs instead of ext4.

gnome-power-manager:
  Installed: 3.2.0-0ubuntu1
  Candidate: 3.2.0-0ubuntu1
  Version table:
 *** 3.2.0-0ubuntu1 0
        500 http://at.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages
        100 /var/lib/dpkg/status

my 2 battary laptop will be shutdown (or hibernated) after the first battary is empty. but the 2nd battary is still full and i have another 6 hours of runtime left.

the laptop:
panasonic toughbook cf-31 K
k stands for mk-3 where the cpu architecture changed

some guesses:
i used to use opensuse. it worked fine with kernel 2.6.37 and started to make problems with version 2.6.38. 2.6.39 got it even worse.
but 3.0 was fine.

hope i can be of help.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: gnome-power-manager 3.2.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.0.0-12.20-generic 3.0.4
Uname: Linux 3.0.0-12-generic x86_64
ApportVersion: 1.23-0ubuntu3
Architecture: amd64
Date: Fri Oct 14 22:07:27 2011
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GnomeSessionSuspendInhibited: No
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012)
MachineType: Panasonic Corporation CF-30KTPAQAM
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-3.0.0-12-generic root=UUID=0be8ad13-ce11-4b6d-acce-2ffd06a3604a ro rootflags=subvol=@ quiet splash vt.handoff=7
SourcePackage: gnome-power-manager
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/21/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: V3.00L16
dmi.board.name: CF30-3
dmi.board.vendor: Panasonic Corporation
dmi.board.version: 1
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Panasonic Corporation
dmi.chassis.version: 001
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrV3.00L16:bd01/21/2009:svnPanasonicCorporation:pnCF-30KTPAQAM:pvr003:rvnPanasonicCorporation:rnCF30-3:rvr1:cvnPanasonicCorporation:ct10:cvr001:
dmi.product.name: CF-30KTPAQAM
dmi.product.version: 003
dmi.sys.vendor: Panasonic Corporation
gnome-power-bugreport: Error: [Errno 2] No such file or directory

[Launchpad Janitor (janitor)]

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