On Fri, Mar 09, 2007 at 09:52:20PM +0100, Thorsten Schmidt wrote: > Hello, > > Am Freitag, 9. März 2007 21:41 schrieb Mike Hommey: > > On Fri, Mar 09, 2007 at 09:25:46PM +0100, Thorsten Schmidt > <[EMAIL PROTECTED]> wrote: > > > Hello, > > > > > > Am Freitag, 9. März 2007 20:42 schrieb Mike Hommey: > > > > On Fri, Mar 09, 2007 at 08:32:21PM +0100, Thorsten Schmidt > > > > > > <[EMAIL PROTECTED]> wrote: > > > > > Hello at all, > > > > > > > > > > for some time I've been trying to reduce my laptop's power > > > > > consumption (while running on battery power) on my Fujitsu-Siemens > > > > > Lifebook C1320 with Debian etch. > > > > > - I echo powersave to > > > > > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor - I installed > > > > > laptop-mode in order to shut down my harddrive if it is unused. - I > > > > > don't use swap, /tmp/ is a ramdisk-mount and /var/tmp links to /tmp, > > > > > (I've 1 GB RAM) > > > > > Thus my hd is barely used and my CPU reaches C3. > > > > > > > > > > But for some reason, Windows is more efficient in power saving. (3,5h > > > > > vs. 4,5h battery life while surfing wireless). > > > > > Is there anything else I can do to save battery power? > > > > > > > > Basically, no, except waiting for Linux ACPI support to get better. > > ok, ehm. > Is this about to happen soon? > Would switching from vanilla (2.6.20.1) to -mm be an option?
probably using CONFIG_NO_HZ=y (yes, available in -mm), but you'll hardly get one more hour. Give it a shot. -- mattia :wq!
