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SubjectRe: cpufreq stops working after a while
On Fri, Aug 11, 2006 at 04:01:23PM -0400, Mark Lord wrote:
> Mark Lord wrote:
> > Dave Jones wrote:
> >>
> >> boot with cpufreq.debug=7, and capture dmesg output after it fails
> >> to transition. This might be another manifestation of the mysterious
> >> "highest frequency isnt accessable" bug, that seems to come from
> >> some recent change in acpi.
> >
> > booting with that option doesn't seem to give me any new messages
> > in dmesg (or /var/log/messages). I also tried editing cpufreq.c
> > and hardcoding debug = 7 on the variable declaration.
> > Still no new messages.
>
> Mmm.. that's interesting.. this time, the scaling_max_freq went back up
> to 1100000 all by itself after a longish idle period, before which it had
> dropped to 800000 and got "stuck" there.
>
> Currently using the "ondemand" governor -- it doesn't seem to call the
> central cpufreq_debug_printk() thingie from cpufreq.c.
>
> I did hack cpufreq_debug_printk() to force output anytime it gets called,
> but still no new output in the logs.

Do you have CONFIG_CPU_FREQ_DEBUG enabled ?

Dave
--
http://www.codemonkey.org.uk
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