Abnormal battery drain

Bug #371981 reported by yoman on 2009-05-05
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
Ubuntu
Undecided
Unassigned

Bug Description

I'm using clean install of 9.04 and my battery drains from 100% to 15% in 19 minutes. I think it used to take over an hour with 8.10.

Thanks.

yoman (yoman-tehstuff) wrote :

Also this is Toshiba Satellite M115-S3094

yoman (yoman-tehstuff) wrote :
yoman (yoman-tehstuff) wrote :
yoman (yoman-tehstuff) wrote :
yoman (yoman-tehstuff) wrote :
collinp (collinp) wrote :

Before we can do anything, are you sure this isn't just a CPU-intensive application running in the background?

yoman (yoman-tehstuff) wrote :

I'm currently only using Thunderbird and Firefox. I'm also using ext4.

yoman (yoman-tehstuff) wrote :

I dunno if this helps but i checked levels with acpi and gnome-power-manager. Battery time goes down rapidly until 7% and much slower after that. This could be related: http://www.mobileviews.com/blog/2009/04/26/ubuntu-904-netbook-remix-0-battery-power-situation/

8:37 Remove laptop from AC after full charge
8:47 Gnome-Power-Manager: 57.5% Acpi: 53%
8:50 gpm: 43.5 acpi: 39
8:54 gpm: 25.5 acpi: 22
8:55 killed gnome-power-manager
8:57 acpi: 7%
9:00 7%
9:10 7%
9:13 4%
9:15 1%
9:26 Battery depleted

yoman (yoman-tehstuff) wrote :

Design capacity looks pretty low... I don't have good source but replacement batteries are 4400 mAh or am I just confusing terms...

present: yes
design capacity: 460 mAh
last full capacity: 460 mAh
battery technology: rechargeable
design voltage: 15000 mV
design capacity warning: 0 mAh
design capacity low: 0 mAh
capacity granularity 1: 0 mAh
capacity granularity 2: 460 mAh
model number: PA3399U-2BAS/BRS
serial number: 7131
battery type: Li-ion
OEM info:

I'll try Windows 7 rc if battery is all weird there.

yoman (yoman-tehstuff) wrote :

I'm looking for some help on how to troubleshoot this issue as it seems that nobody else has confirmed this problem.

yoman (yoman-tehstuff) wrote :

Design capacity changes pretty wildly after reboot. Today it is:

present: yes
design capacity: 1056 mAh
last full capacity: 1056 mAh
battery technology: rechargeable
design voltage: 15000 mV
design capacity warning: 0 mAh
design capacity low: 0 mAh
capacity granularity 1: 0 mAh
capacity granularity 2: 1056 mAh
model number: PA3399U-2BAS/BRS
serial number: 7131
battery type: Li-ion

However battery life seems similar in Windows 7 so I guess this is an hardware problem.

Thank you for reporting this bug.

Since it seems like a hardware issue, and there has been no activity in this bug report for quite some time I'm going to close the bug. If you come up with more info, feel free to reopen or report a new bug report.

Thank you again, and pleas continue to report any bugs you encounter in Ubuntu in the future.

Changed in ubuntu:
status: New → Invalid
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