Public bug reported:
Greetings...
The battery charge rate on a System76 Starling netbook reports a
plausible value when discharging, but it reports a very high value when
charging:
$ cat /proc/acpi/battery/BAT1/state
present: yes
capacity state: ok
charging state: discharging
present rate: 1210 mA
remaining capacity: 4256 mAh
present voltage: 12241 mV
$ cat /proc/acpi/battery/BAT1/state
present: yes
capacity state: ok
charging state: charging
present rate: 64785 mA
remaining capacity: 4117 mAh
present voltage: 12284 mV
This appears to be due to my netbook's ACPI faeries reporting the
current from the battery as a signed int (discharge = positive, charge =
negative). I have worked around this by adding my vendor to the
acpi_battery_quirks() function in drivers/acpi/battery.c, but have since
lost the patch and can't remember what I used for dmi_name_in_vendors().
Attached is a tarball of /proc/acpi in all three states
(charged/charging/discharging). Thanks! -rt
Steps to reproduce:
1) Unplug AC power.
2) Wander off for awhile.
3) Replug AC power.
4) Look at present rate.
5) Compute power dissipated by 65 amperes at ~12 volts; observe that battery is
not actually on fire.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-28-generic 2.6.32-28.55
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-28.55-generic 2.6.32.27+drm33.12
Uname: Linux 2.6.32-28-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
Architecture: i386
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC268 Analog [ALC268 Analog]
Subdevices: 0/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: rtucker 2272 F.... pulseaudio
/dev/snd/pcmC0D0p: rtucker 2272 F...m pulseaudio
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not
found.
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0x94340000 irq 16'
Mixer name : 'Realtek ALC268'
Components : 'HDA:10ec0268,152d1777,00100101'
Controls : 12
Simple ctrls : 7
Date: Sun Feb 13 13:40:06 2011
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=070bbc23-88fb-4d1c-aa6c-103a74e615e0
InstallationMedia: Ubuntu-Netbook-Remix 9.10 "Karmic Koala" - Release i386
(20091028.4)
IwConfig:
MachineType: Quanta UW1
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-28-generic
root=UUID=9f1f6d4f-ecf1-47f0-ac14-da83dcfbfe0d ro quiet splash
pciehp.pciehp_force=1
ProcEnviron:
SHELL=/bin/bash
PATH=(custom, user)
LANG=en_US.UTF-8
RelatedPackageVersions: linux-firmware 1.34.3
RfKill:
SourcePackage: linux
dmi.bios.date: 05/19/2009
dmi.bios.vendor: INSYDE
dmi.bios.version: Q3F21
dmi.board.asset.tag: Base Board Asset Tag
dmi.board.name: Base Board Product Name
dmi.board.vendor: Quanta
dmi.board.version: 03
dmi.chassis.asset.tag: ��������������������������������
dmi.chassis.type: 1
dmi.chassis.vendor: Chassis Manufacturer
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnINSYDE:bvrQ3F21:bd05/19/2009:svnQuanta:pnUW1:pvr04:rvnQuanta:rnBaseBoardProductName:rvr03:cvnChassisManufacturer:ct1:cvrChassisVersion:
dmi.product.name: UW1
dmi.product.version: 04
dmi.sys.vendor: Quanta
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug i386 kconfig lucid needs-upstream-testing ubuntu-une
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https://bugs.launchpad.net/bugs/718334
Title:
ACPI: Battery charge rate reported as a signed int but displayed as an
unsigned int
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