battery life on presario 720
marks at ripe.net
Tue Aug 5 00:44:46 PDT 2003
Can you send the output of "sysctl hw.acpi"?
On Sat, Jul 12, 2003 at 11:40:32AM +1000, Rudolph Pereira wrote:
> 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.
Mark Santcroos RIPE Network Coordination Centre
http://www.ripe.net/home/mark/ New Projects Group/TTM
More information about the freebsd-mobile