Date: Fri, 22 Dec 2006 05:27:43 +1100 From: Peter Jeremy <peterjeremy@optushome.com.au> To: Scot Hetzel <swhetzel@gmail.com> Cc: freebsd-stable@freebsd.org, FreeBSD Questions <freebsd-questions@freebsd.org>, freebsd-mobile@freebsd.org Subject: Re: Acer Aspire WLMi 5102 with AMD Turion 64 X2 system hanging with powerd on 6.2-RC1 and 6.2-PRERELEASE Message-ID: <20061221182743.GE41566@turion.vk2pj.dyndns.org> In-Reply-To: <790a9fff0612201504h2af9affufd27a18954d52cbf@mail.gmail.com> References: <499c70c0612200040w246c8cfcu9047463cb98bcff9@mail.gmail.com> <790a9fff0612201504h2af9affufd27a18954d52cbf@mail.gmail.com>
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[-- Attachment #1 --] On Wed, 2006-Dec-20 15:04:31 -0800, Scot Hetzel wrote: >Had the same problem where powerd would hang my HP Pavilion dv8000 >system. I worked arround the problem by using the following in >rc.conf: > >powerd_enable="YES" >powerd_flags="-a maximum -b maximum" > >Of course this makes powered do nothing when on battery. You might as well have powerd_enable="NO" > What I think >is happening is that powered is too aggressive in downgrading the >clock speed, that it eventually sets the clock to a value that is so >low that the system stops responding. I have an HP nx6125 that will randomly hang if powerd is enabled and if you search back through the mailing lists, there are a few other people with similar problems. I've done some experimenting and in my case, it's the clock speed transitions that cause a hang. The actual clock speed is irrelevant. I believe it's a race condition or a timing bug. -- Peter Jeremy [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFFitIf/opHv/APuIcRAidDAJ9buD1UhHRSzk6sEpgrn1JxuivV/wCcDjt/ CJa+6V24g36Rvm759JuMCGk= =yX/i -----END PGP SIGNATURE-----
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