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Date:      Fri, 22 Dec 2006 05:27:43 +1100
From:      Peter Jeremy <>
To:        Scot Hetzel <>
Cc:, FreeBSD Questions <>,
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:  <>
In-Reply-To: <>
References:  <> <>

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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
>powerd_flags=3D"-a maximum -b maximum"
>Of course this makes powered do nothing when on battery.

You might as well have

>  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

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