On Sunday, March 31, 2013 07:16:54 PM Viresh Kumar wrote:
> On 31 March 2013 17:40, Simon Kalteis <skalteis@xxxxxxxxxxxxxx> wrote:
> > cpufreq-info:
> >
> > cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
> > Report errors and bugs to cpufreq@xxxxxxxxxxxxxxx, please.
> >
> > analyzing CPU 0:
> > driver: acpi-cpufreq
> > CPUs which run at the same hardware frequency: 0
> > CPUs which need to have their frequency coordinated by software: 0
> > maximum transition latency: 10.0 us.
> > hardware limits: 600 MHz - 900 MHz
> > available frequency steps: 900 MHz, 600 MHz
> > available cpufreq governors: userspace, conservative, powersave,
> >
> > ondemand, performance current policy: frequency should be within 600
> > MHz and 900 MHz. The governor "ondemand" may decide which speed to use
> >
> > within this range.
> >
> > current CPU frequency is 900 MHz (asserted by call to hardware).
> > cpufreq stats: 900 MHz:49.48%, 600 MHz:50.52% (204)
> >
> > analyzing CPU 1:
> > driver: acpi-cpufreq
> > CPUs which run at the same hardware frequency: 1
> > CPUs which need to have their frequency coordinated by software: 1
> > maximum transition latency: 10.0 us.
> > hardware limits: 600 MHz - 900 MHz
> > available frequency steps: 900 MHz, 600 MHz
> > available cpufreq governors: userspace, conservative, powersave,
> >
> > ondemand, performance current policy: frequency should be within 600
> > MHz and 900 MHz. The governor "ondemand" may decide which speed to use
> >
> > within this range.
> >
> > current CPU frequency is 900 MHz (asserted by call to hardware).
> > cpufreq stats: 900 MHz:22.56%, 600 MHz:77.44% (377)
>
> So your hardware has communicated only two frequencies to cpufreq-core:
> 600 and 900 MHz.. Don't know what that could be on a x86..
>
> Lets see if others added in Cc can help you.
Is there a bugzilla.kernel.org bug for this one already?
If not, best create one, set the component to cpufreq and add me to CC.
This may boild down to an ACPI thing, though.
The CPU frequencies are passed to the kernel via ACPI BIOS parts.
You may want to look out for BIOS settings in this area as well, but something
seem to go really wrong.
Please make sure you have the latest BIOS installed and attach dmesg to the
bug.
Thomas
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