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Date: Thu, 24 Feb 2005 12:59:42 -0800
From: Nate Lawson <nate@root.org>
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To: Morten Rodal <morten@rodal.no>
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cc: acpi@freebsd.org
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Subject: Re: HEADSUP: cpufreq import complete, acpi_throttling changed
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Morten Rodal wrote:
> On Wednesday 23 February 2005 20:24, Nate Lawson wrote:
> The issue is partly fixed.  I now see the following frequency levels if, 
> and only if, I booted the laptop on battery power:
> 
> # sysctl dev.cpu.0.freq_levels
> dev.cpu.0.freq_levels: 1200/0 1050/0 900/0 787/0 750/0 656/0 600/0 562/0 
> 525/0 450/0 393/0 337/0 300/0 262/0 225/0 187/0 150/0 112/0 75/0 37/0
> 
> Note that the native processor speed (1700 MHz) is not listed, and setting 
> the speed below 150 hard-hangs/freezes the laptop.

Not sure we can fix this one.  It appears some very low clock rates hang 
some systems.  Can you test with SCHED_4BSD?

> When booting with AC-power the laptop does not report any freq{,_levels}.  
> It does not matter if I remove the AC-power once the computer is up and 
> running, I always get this:
> 
> # sysctl dev.cpu.0.freq
> dev.cpu.0.freq: -1

I just committed a fix for this.

-- 
Nate