Hi, This is a question (not a solution) to determine how to gain maximum batt life on a laptop. More details on http://bellet.info/~bellet/laptop/t40.html Currently, following the recommendations in the link above, I have set 'noatime' for my HDs as well as placing commit=600. so in /etc/fstab /dev/hda / etx3 defaults,noatime,commit=600 1 1 The commit=600 is supposed to stop Kjournal from committing to disk every 5 seconds and to give a chance to the HD to spin down (not happening!) (can check via hdparm -C /dev/hda) Doing a hdparm -y /dev/hda (to place the disk into standby) will only work for like 10-30 seconds before it spins up again. I have no idea what is causing it to spin up again.. (what I/O is going on??) There is the option of changing bdflush as well, changing this (5th & 6th) to 6000 & 12000 does not yield anything better Does anyone has a solution or something like a solution which I can try out?? Anything would be good.. I want to extend my battery life.. Dell D600 on a 4320Mah 6cell Batt with 14.1 SXGA screen Cheers, .^. Mun Heng, Ow /V\ H/M Engineering /( )\ Western Digital M'sia ^^-^^ DID : 03-7870 5168 The Linux Advocate
