On Fri, Jan 13, 2006 at 09:42:26PM -0600, Philipp Rumpf wrote:
> Out of curiosity, why didn't you do the monitoring using
> /proc/acpi/battery/.../{state,info} (while running off battery)? I
> think that should have much finer granularity, and avoid various
> capacitors that might be in the way and explain the effect you
> noticed.
ACPI battery reporting seems hit-or-miss at times.
Sometimes it seems to not update for ages, and then suddenly
there's a burst when suddenly 5% of the battery drains in
seconds. As an overall 'how much battery is left' thing it seems
ok, but I don't trust it for accurate measurements of power drain.
Whether this is a firmware deficiency causing us not to see
regular interrupts, or a problem with the acpi parser I don't know.
Dave
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