I use the cpuspeed daemon in Fedora Core 4 - very easy to set up and works quite well. The little GNOME applet to switch speeds on the fly manually is very useful, too.
Totally aside, on-the-fly throttling is quite handy. We use it at work to simulate embedded hardware speeds - a 375mhz P4 is pretty slow :). Another trick you can do is to set the spin down time on your hard drive to something lower than the default, so it's spinning less. I would personally not recommend doing this, since I'm told spinning up and down frequently puts a lot of wear on the drive. Still, if maximum power is your biggest priority... I guess you might also get some battery life if you rmmod your wireless driver, but I'm not sure how power consumption is handled for that component (it could be that just setting the interface to down is enough). Thankfully, I have a hardware switch. I've never gotten ACPI sleep to work, either. Fedora Core 5 is supposedly going to try to support it out of the box, but I'll believe it when I see it. -DMZ On Mon, 2005-10-24 at 14:37 -0400, John Demme wrote: > Right, so actually one good way to get better battery life (much > better) is to run a CPU throttling daemon. It detects your CPU usage > and throttles it accordingly, so your CPU is, on the average, not > using nearly as much juice. The one I use is called powernowd. It > works pretty well. Alternatively, I think that one can configure > one's kernel to do the same thing, but I''ve no experience with that. > I prefer userspace over kernelspace whenever possible (in nearly > direct opposition to the Linux kernel guys it would seem). > > Related to ACPI- does anyone have any experience with getting ACPI > sleep states working? I have a Toshiba Portege M205 running Gentoo, > and I can't get any of the sleep states to work properly. > > ~John Demme > > On 10/24/05, Derek Phillips <[EMAIL PROTECTED]> wrote: > I'm running gentoo + 2.6.13 on a vaio v505ax. I also dual > boot Windows XP Pro. On windows, I get about 3 hours of > battery life at the most conservative setting, but on linux i > get much much less. Anyone have any tips to share for > boosting battery life? > > On a different note, if anyone reading this drives for Shuttle > and is looking for extra hours during the week (from 2-7), let > me know. > > ~Derek >
