Re: [gpm] Unexpectedly low battery life
- From: "simon zheng sun com" <Simon Zheng Sun COM>
- To: Stephen Brandwood <steve phoenixscripts co uk>
- Cc: gnome-power-manager-list gnome org
- Subject: Re: [gpm] Unexpectedly low battery life
- Date: Fri, 16 May 2008 13:32:56 +0800
Sorry! Should be "battery.charge_level.design" rather than
= ï»¿battery.charge_level.last_full / ï»¿battery.ï»¿charge_level.last_full.design
My battery is even lower, 37%. Too bad.:(
On Fri, 2008-05-16 at 13:18 +0800, simon zheng sun com wrote:
> Low-level HAL supplies two properties.
> 1. battery.charge_level.last_full (int)
> The maximum level of charge the device could hold the last time it was
> full. Measured in "battery.charge_level.unit" units.
> 2. battery.reporting.design (int)
> The maximum level of charge the device was designed for, as reported by
> the hardware. Measured in "battery.reporting.unit" units.
> In GPM,
> capacity = ï»¿battery.charge_level.last_full/ï»¿battery.reporting.design.
> So lower capacity means your ï»¿poorer battery performance. Value is
> decided by battery hardware itself. I think this info is very useful.
> On Thu, 2008-05-15 at 22:44 +0100, Stephen Brandwood wrote:
> > Hi,
> > I've noticed a large drop in battery life performance since I switched
> > from Ubuntu 7.10 to a fresh install of Ubuntu 8.04 (both 32 bit and 64
> > bit versions). The Power Manager tool has highlighted a massive problem
> > with the battery capacity being capped at 59% (full stats are below).
> > How is this number calculated? Is it possible something deep inside the
> > OS is misreading the charge of my battery? The loss of capacity somewhat
> > correlates with the drop in performance I have observed.
> > Thanks,
> > Steve
> > Battery details after a full charge:
> > Product: DELLUD2606
> > Percentage Charge: 99%
> > Vendor: Sanyo
> > Technology: Lithium ion
> > Model: DELLUD2606
> > Capacity: 59% (Poor)
> > Current Charge: 56.8 Wh
> > Last full charge: 56.8 Wh
> > Design charge: 95.5 Wh
> > Charge rate: 33.0 W
> > _______________________________________________
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> > gnome-power-manager-list gnome org
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