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[calimocho <877556@xxxxxxxxxxxxxxxxxx>]

I've had this problem since 10.10.  (Now on 11.10).  It was just
annoying up to this point, but gnome3 only lets you hibernate or
shutdown for critical battery.

If I had to wager, I'd say the problem has to do with using the battery
remaning charge divided by the battery *designed* full capacity, not the
battery present full capacity.  Batteries lose maximum charge hold over
time.  My laptop is about 1.5 years old, and 'lshal | grep battery'
yields this:

battery.charge_level.design = 62160
battery.charge_level.last_full = 31646

When I get to about 40-50% of possible charge (maybe ~14000 in units
from above) the battery warnings start coming.  I usually have 30 - 40
minutes (get about an hour and some change on a full charge).
14000/31646 = 40%.  But if the *designed* capacity were used instead
14000/62160 = 22%, now we starting to get towards warning territory.

I can use the battery down until the hardware warning comes on ok, but
if i suspend and wake it with the battery at 50% (roughly) or lower, it
will immediately hibernate.  I can then restore it, and it runs fine.

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to gnome-power-manager in Ubuntu.
https://bugs.launchpad.net/bugs/877556

Title:
  Calculation of Battery Power Consumsion was Mistake

Status in “gnome-power-manager” package in Ubuntu:
  Confirmed

Bug description:
  Many times the power-manager was over estimate power consumption it cause of unexpected hibernate.
  Some time it show that my laptop consume 1,000 W, it was impossible and never happen in Win7 on same laptop.
  Please see the attached picture for consideration.

  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
  NonfreeKernelModules: fglrx wl
  ApportVersion: 1.23-0ubuntu3
  Architecture: amd64
  Date: Tue Oct 18 22:58:43 2011
  ExecutablePath: /usr/bin/gnome-power-statistics
  GnomeSessionIdleInhibited: No
  GnomeSessionInhibitors: None
  GnomeSessionSuspendInhibited: No
  InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
  MachineType: Hewlett-Packard Compaq Presario CQ41 Notebook PC
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.0.0-12-generic root=UUID=1968bb09-d725-4d13-8e8e-75a43c0d8adb ro vga=792 quiet quiet splash vt.handoff=7
  SourcePackage: gnome-power-manager
  UpgradeStatus: Upgraded to oneiric on 2011-10-13 (4 days ago)
  XsessionErrors: (gwibber-service:2078): libindicate-WARNING **: Menu being changed when the indicator is visible.  Listeners will NOT be notified of this change.
  dmi.bios.date: 12/10/2009
  dmi.bios.vendor: Insyde
  dmi.bios.version: F.17
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 3644
  dmi.board.vendor: Hewlett-Packard
  dmi.board.version: 40.23
  dmi.chassis.type: 10
  dmi.chassis.vendor: Hewlett-Packard
  dmi.chassis.version: N/A
  dmi.modalias: dmi:bvnInsyde:bvrF.17:bd12/10/2009:svnHewlett-Packard:pnCompaqPresarioCQ41NotebookPC:pvr0396200000000D10000000000:rvnHewlett-Packard:rn3644:rvr40.23:cvnHewlett-Packard:ct10:cvrN/A:
  dmi.product.name: Compaq Presario CQ41 Notebook PC
  dmi.product.version: 0396200000000D10000000000
  dmi.sys.vendor: Hewlett-Packard
  gnome-power-bugreport: Error: [Errno 2] No such file or directory

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