Public bug reported:
I've been having problems with both the battery percentage indication
and charging.
If no OS is not loaded(bios): Battery percentage and estimated time are
accurate, and battery always charges back to 100%
If windows is loaded: Battery percentage and estimated time are accurate, and
battery always charges back to 100%
When ubuntu is loaded: The battery percentage (and time estimate) is way
off from the actual values and ubuntu is random about it decision to
charge or not to charge the battery.
The only clues i could find are the following dmesg lines:
ACPI: Deprecated procfs I/F for AC is loaded, please retry with
CONFIG_ACPI_PROCFS_POWER cleared
ACPI: Deprecated procfs I/F for battery is loaded, please retry with
CONFIG_ACPI_PROCFS_POWER cleared
ACPI: Battery Slot [BAT1] (battery absent)
(i don't seem to have a BAT1 slot?)
ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: linux-image-2.6.38-9-generic 2.6.38-9.43
ProcVersionSignature: Ubuntu 2.6.38-9.43-generic 2.6.38.4
Uname: Linux 2.6.38-9-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: work 1590 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf6adc000 irq 47'
Mixer name : 'Intel Cantiga HDMI'
Components : 'HDA:111d76b2,10280233,00100302
HDA:80862802,80860101,00100000'
Controls : 19
Simple ctrls : 11
Date: Sun May 8 20:33:25 2011
HibernationDevice: RESUME=UUID=c44d4678-3197-4d15-bcc8-b1404aa9eca6
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Beta amd64 (20100901.1)
MachineType: Dell Inc. Latitude E6400
PccardctlIdent:
Socket 0:
no product info available
PccardctlStatus:
Socket 0:
no card
ProcEnviron:
LANGUAGE=en_US:en
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-2.6.38-9-generic
root=UUID=011a04a8-aa8b-48dc-aa89-d52c7a32af85 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-2.6.38-9-generic N/A
linux-backports-modules-2.6.38-9-generic N/A
linux-firmware 1.52
SourcePackage: linux
UpgradeStatus: Upgraded to natty on 2011-04-29 (9 days ago)
dmi.bios.date: 02/16/2011
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A28
dmi.board.name: 0W620R
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA28:bd02/16/2011:svnDellInc.:pnLatitudeE6400:pvr:rvnDellInc.:rn0W620R:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude E6400
dmi.sys.vendor: Dell Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug natty running-unity
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https://bugs.launchpad.net/bugs/779586
Title:
Battery percentage and charging inaccurate
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