Power management does not detect battery

[denj]

Although this bug seems similar to Bug #428500 the difference lies in how the battery is seen by the power management utility.

In my HP NC6000, the battery is seen as AC line or plugged in and when I unplug it, the laptop immediately shuts off despite the real ac line being plugged in.

When I try to run hal-find-by-capability command, it says command not found.

acpi -V shows
"No support for device type: power_supply
  No support for device type: power_supply
  No support for device type: thermal
  No support for device type: thermal"

1.) I'm running Ubuntu 11.04 - the Natty Narwhal
2.) version of gnome-power-manager: whatever was released with 11.04 with latest updates run as of yesterday night
3.) I expect power-manager to at least know that I have a battery plugged in instead of treating my laptop as a desktop.
4.) See above

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: gnome-power-manager 2.32.0-2ubuntu2.1
ProcVersionSignature: Ubuntu 2.6.38-11.48-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic i686
Architecture: i386
Date: Fri Aug 26 14:07:45 2011
ExecutablePath: /usr/bin/gnome-power-manager
GnomeSessionIdleInhibited: No
GnomeSessionInhibitors: None
GnomeSessionSuspendInhibited: No
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
Lsusb:
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Hewlett-Packard HP Compaq nc6000 (PL639UA#ABA)
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.38-11-generic root=UUID=14C052F2C052D996 loop=/hostname/disks/root.disk ro quiet splash
SourcePackage: gnome-power-manager
UpgradeStatus: No upgrade log present (probably fresh install)
XsessionErrors: (nautilus:2125): GdkPixbuf-CRITICAL **: gdk_pixbuf_format_get_name: assertion `format != NULL' failed
dmi.bios.date: 08/30/2006
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68BDD Ver. F.15
dmi.board.name: 0890
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 8051 Version 1A.19
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias: dmi:bvnHewlett-Packard:bvr68BDDVer.F.15:bd08/30/2006:svnHewlett-Packard:pnHPCompaqnc6000(PL639UA#ABA):pvrF.15:rvnHewlett-Packard:rn0890:rvr8051Version1A.19:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP Compaq nc6000 (PL639UA#ABA)
dmi.product.version: F.15
dmi.sys.vendor: Hewlett-Packard