battery life on presario 720

Mark Santcroos marks at ripe.net
Tue Aug 5 00:44:46 PDT 2003


Hi Rudolph,

Can you send the output of "sysctl hw.acpi"?

Mark

On Sat, Jul 12, 2003 at 11:40:32AM +1000, Rudolph Pereira wrote:
> Hello,
> I have a presario 720au laptop (only has acpi support), 
> and I am trying to work out why it's
> running time on battery is so low under freebsd.
> Under linux and windows xp, I can get up to about 4 hours of battery
> life, while on freebsd (-current, compiled jul 9), it's less than two
> hours (closer to 1:45).
> 
> Is there something fundamental I'm missing? Both windows xp and linux
> seem to run quieter/cooler (I assume they are turning off fans, idling
> the cpu, etc), but I cannot achieve the same effect with freebsd.
> 
> I've attached a dmesg, if that's of any help. All the OSs are pretty
> much stock standard installs with no tweaking. Linux is 2.4.21 +acpi
> patches, and freebsd only has nate's EC patch (which has since been
> committed, iirc). I've tried using my own compiled dsdt/aml table but
> that doesn't seem to change anything.
> 
> If anyone can point me in the right direction, or give any other
> information, it would be appreciated.
> 
> thanks
> 

-- 
Mark Santcroos                    RIPE Network Coordination Centre
http://www.ripe.net/home/mark/    New Projects Group/TTM


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