[ltp] Re: Best ways of maximizing battery life on a T30 under Linux?

[Greg Macek]

Ok, here's the problem I'm running into (SuSE 8.2):

Starting speedfreqd daemon: /usr/local/sbin/speedfreqd: cannot find
cpufreq under /sys
        Need sysfs mounted on /sys, and kernel configured with cpufreq
driver

First off, I had to change the init.d scripts because it defaulted to
RedHat-type standards. (/etc/rc.d/init.d vs. /etc/init.d). Then I
received the error message above. SuSE seems to have the cpufreq stuff
already as part of their kernel. Maybe it's not right? Also, I didn't
have the /sys directory nor the sysfs filesystem mounted. 

Any ideas? 

On Mon, 2003-08-25 at 20:19, Greg Macek wrote:
> Thanks. I will give this a try. Looks promising. Will post my results
> after I get everything installed. 
> 
> On Sun, 2003-08-24 at 23:20, Daniel Pittman wrote:
> > On Sat, 23 Aug 2003, Greg Macek wrote:
> > > In everyone's experience here, what are some things I can be doing to
> > > help maximize my battery life while running Linux on my T30 notebook? 
> > 
> > [...]
> > 
> > > Screen is set to not be at same brightness on battery. 
> > 
> > That is a good start.
> > 
> > I have gotten a fairly good improvement in system life by installing the
> > 'speedfreq' package[1], which sets the SpeedStep state depending on the
> > CPU load.
> > 
> > My machine is now in 'powersave' almost all the time, and my battery
> > life is up substantially.
> > 
> > Other packages such as 'cpudyn' address the same issue.
> > 
> >      Daniel
> > 
> > Footnotes: 
> > [1]  <http://www.goop.org/~jeremy/speedfreq/>
> > 
> > -- 
> > No matter how hard you push and no matter what the priority, you can't
> > increase the speed of light.
> >         -- RFC 1925
> -- 
> Greg Macek | Senior IT Manager
> Marketing Resources, Inc.
> 
> it-guy@mrichi.com | http://www.mrichi.com
-- 
Greg Macek | Senior IT Manager
Marketing Resources, Inc.

it-guy@mrichi.com | http://www.mrichi.com