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Old 12-06-2002, 10:11 AM   #1
DAChristen29
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Registered: Dec 2002
Location: Johnstown, Co
Distribution: Mint (debian edition)
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Battery life


when i run windows on my laptop on a battery, the life will last about 2 hours. when i run linux, it only lasts about 30-45 minutes. how can i make my life last longer ? i already tried TOSHIBA tools, they wouldn't compile. my laptop is a toshiba satellite running mandrake 9.0. are there any kernel tweaks i can do, or do i need to get software, and where can i get software?
 
Old 12-07-2002, 05:50 PM   #2
mcleodnine
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Are you running apmd? ('ps -e | grep apmd'). Some new distros are shipping with ACPI instead (using ospm_ modules) so you may want to look and see if you have the modules already built (find /lib/modules -name ospm_*)

You could also have a look at autospeedstep over at http://gpsdrive.kraftvoll.at/speedstep.shtml

Last edited by mcleodnine; 12-07-2002 at 05:53 PM.
 
Old 02-03-2003, 12:18 PM   #3
thas
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I have the same problem with my Toshiba 1800-4k1 and MDK9.0
I tried updating with an ACPI-enabled kernel and did not notice any improvement/difference. (I used kacpi under KDE)
By default, apmd is running w/ 2.4.19 that I updated from cooker (mandrake's development versions).

I'm yet to try the link given in the previous post for an external tool. Does apmd have parameters that can be tweeked (like the Toshiba tools in XP) which allow me to set CPU throttle and LCD brightness depending on available battery life?

From what I gathered about apmd, it is only a reporting tool. Can it be used to configure battery use (by modifying CPU speed etc.)?
Thankx.

-Thas

Last edited by thas; 02-03-2003 at 12:20 PM.
 
  


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