Date: Fri, 10 Dec 2004 20:56:06 -0600 From: Eric Anderson <anderson@centtech.com> To: Yann Berthier <yb@sainte-barbe.org> Cc: freebsd-acpi@freebsd.org Subject: Re: suspend status Message-ID: <41BA61C6.9080903@centtech.com> In-Reply-To: <20041211014613.GK695@hsc.fr> References: <20041211014613.GK695@hsc.fr>
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Yann Berthier wrote: > Hi gang, > > My IBM T41 suspend / resume well (-CURRENT from the 12/3): screen > goes black, every activity seems stopped, resume like a champ (i'm > not sure that champs resume either) > > but battery goes down as if it where not suspended: > > Remaining battery life: 99% > Remaining battery time: 3:18:00 > [yb@taz 19:00]% sudo zzz > > After resuming: > > Remaining battery life: 80% > Remaining battery time: 2:00:00 > [yb@taz 20:29]% > > I know the remaining battery time is not an accurate measure, but all > in one I stay suspended 1h30, and my battery 'lost' 1h20 of power - > so it says > Refigure your math - if 100% cpu means 3hrs 18 minutes of runtime left, then that about 200 minutes of runtime. So 1% equals 2 minutes of runtime roughly. So, you suspend - and wait up 90 minutes later. If it would have been running like normal, it would eat up 1% per 2 minutes, so about 45% of your battery - but it didn't, it only ate up 20%. So ath that rate, it was using less than half the power as when in non-suspend mode. Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology When in doubt, mumble; when in trouble, delegate; when in charge, ponder ------------------------------------------------------------------------
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