linux-kernel - Re: cpufreq longhaul locks up

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Date:	Fri, 04 May 2007 13:37:32 -0700
From:	john stultz <johnstul@...ibm.com>
To:	Jan Engelhardt <jengelh@...ux01.gwdg.de>
Cc:	davej@...emonkey.org.uk,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	cpufreq@...ts.linux.org.uk
Subject: Re: cpufreq longhaul locks up

On Fri, 2007-05-04 at 12:16 +0200, Jan Engelhardt wrote:
> Hi,
> 
> 
> I found that setting the cpufreq governor to ondemand making the box 
> lock up solid in 2.6.20.2 and 2.6.21 after a few seconds. Sysrq 
> does not work anymore, and the last messages are:
> 
> May  3 19:16:58 cn kernel: longhaul: VIA C3 'Nehemiah C' [C5P] CPU 
> detected.  Powersaver supported.
> May  3 19:16:58 cn kernel: longhaul: Using northbridge support.
> May  3 19:17:22 cn kernel: Time: acpi_pm clocksource has been installed.
> May  3 19:17:22 cn kernel: Clocksource tsc unstable (delta = -136422685 
> ns)

What happens if you boot wihtout the ondemand governor but w/ clocksource=acpi_pm ? 


thanks
-john


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