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Old 08-10-2004, 01:19 PM   #1
d4nr
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thinkpad r40 battery life


hi, im running slackware 10.0 on an ibm thinkpad r40 laptop and i have extremely short battery life. when i use apm, i cant keep it up for more than 1 hour. on acpi, i can keep it for about 1,5 hours. i am using cpufreqd to spin down to 1,2ghz but it only gives me 15-20 minutes more. (this machine can do 2,5-3 hours on windows.

also, i tried using hdparm to spin down the hdd but im not sure if it works as it still reports as active/idle.

should i just accept the fact that linux wont give me as long battery life as windows or is there something that im missing?
 
Old 08-10-2004, 01:37 PM   #2
LoungeLizard
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Look in your bios to see if there is a place were you can set when the laptop is running on battery to down clock the cpu and spin down drives not in use to save power. I know on my laptop that is how I had to set it to get the same results as in windows, but I am unsure if Thinkpads have the same feature.

Good Luck
 
Old 08-10-2004, 02:06 PM   #3
d4nr
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well, i did try to set it to uber maximum battery. made my machine slow as hell and it only saved me 1000mW
 
Old 08-11-2004, 03:07 PM   #4
LoungeLizard
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you dont happen to ACPI and APM services running at the same time you?
 
Old 08-12-2004, 11:44 AM   #5
d4nr
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Quote:
Originally posted by LoungeLizard
you dont happen to ACPI and APM services running at the same time you?
nope, thats not even possible as far as i know
 
Old 08-12-2004, 02:03 PM   #6
LoungeLizard
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I did not think it was possible either but saw it on a buds laptop a while back and asked him how he managed to do that....but he had no clue and I was unable to repeat it...thats the only reason for my stupid suggestion
 
  


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