Linked by Eugenia Loli on Fri 5th Nov 2004 01:55 UTC
Hardware, Embedded Systems San Jose-based sent us one of their best-selling laptops, the LC2430. We've used it for more than a month with four different distributions and here's what we think about it.
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battery time
by hallgreng on Fri 5th Nov 2004 16:06 UTC

remember that to extend battery life you can use the cpu throttling supplied in the vanilla kernel.

my Dell Inspiron 5150 (3.06GHz P4, GeforceFX 5200go) gets about two hours at full speed (surfing the web, irc, etc) and 50mins at full load (gentoo ^_^).
after echoing "powersave" to the sysfs scaling governor, i get four hours (at 1.5GHz surfing the web, irc, etc).
i dont bother compiling at 1.5GHz, i put it into powersave to extend the battery time.

coupling this with a simple lcd-off script to turn off the screen when the lid is down, and i get a good six hours from this beast.

echoing "performance" puts it back to normal.

this does not need ACPI or any kernel patches.