[ltp] short battery life on t40

Jason 'T' Rolfe linux-thinkpad@linux-thinkpad.org
Thu, 11 Sep 2003 10:44:41 -0400 (EDT)


Freddy - 

I know this should be an RTFM-type question, but I can't find a manual of 
any sort: How do you adjust the display power in linux or otherwise?  
Also, I am running ext3.  Do you have any idea how much power is saved by 
switching to a non-journaling file system?  Do I actually need to 
remove my wlan modules?  Why isn't turning off wireless with ifdown 
sufficient?  Thanks for your help.

Jason

On Thu, 11 Sep 2003, Frederic Gaus wrote:

> Did you check the following?? :
> 
> - Lowest Display
> - Not a journaling fs
> - no wlan active (modules removed)
> - did you tried to play with bdflush?
> 
> Improve these settings was most useful for me ;-)
> 
> Have fun
> Freddy
> 
> On Thu, Sep 11, 2003 at 03:18:16AM -0400, Jason 'T' Rolfe wrote:
> > Hey.  My new T40 is only getting about 2 to 2.5 hours of battery life (as
> > reported by apm), as oppposed to the expected 5.  I am running Debian with
> > kernel version 2.4.21, as well as apm and the thinkpad and thinkpadpm
> > modules.  I've tried running apmiser, but it doesn't appear to do much.  
> > My BIOS settings are configured for maximum battery life when not running
> > on AC.  /proc/cpuinfo reports that, although my processor is 1.6 ghz, I'm
> > only running at 598.076 mhz when using batteries.  I'm not running cpufreq
> > or cpudyn, but I would think that they wouldn't do much given that cpuinfo
> > reports 600 mhz operating speed.  Do you have any idea how to improve my
> > battery life?  Thanks.
> > 
> > Jason Rolfe
> > 
> > --
> > The red in the sky is ours. . .
> > 
> > 
> > -- 
> > The linux-thinkpad mailing list home page is at:
> > http://mailman.linux-thinkpad.org/mailman/listinfo/linux-thinkpad
> > 
> 

-- 
Jason

--
The red in the sky is ours. . .