Date: Mon, 24 Dec 2007 12:43:19 +0000 From: Rui Paulo <rpaulo@fnop.net> To: Aragon Gouveia <aragon@phat.za.net> Cc: freebsd-acpi@FreeBSD.org Subject: Re: powerd doesn't decrease CPU frequency in some cases Message-ID: <86hci8mffc.wl%rpaulo@fnop.net> In-Reply-To: <20071224091511.GA25786@phat.za.net> References: <476E8674.5000303@gmail.com> <20071224091511.GA25786@phat.za.net>
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At Mon, 24 Dec 2007 11:15:11 +0200, Aragon Gouveia wrote: > > Hi, > > I recently experienced the exact same behaviour as you are experiencing. > I'm running an HP Pavilion dv2610ei. In my case, dev.cpu.0.freq_levels > shows frequencies 2201 and 2200 (2.2 GHz Core2Duo CPU), and setting > frequency to 2200 jumps to 2201. This was completely messing with powerd as > it does not expect a frequency change to jump to another level. > > I wrote a powerd patch a while ago which adds a check condition and removes > a frequency level if it fails to get set. It's attached. Please feel free > to test it and report back. :) Isn't it better to teach est(4) to ignore values that differ in, say, +/- 5Mhz ? -- Rui Paulo
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