[Solved] cpufreq won't work... wrong or unhandled cpu

Question

I have installed Arch 86_64 on my HP Notebook DV6 2120ED with a AMD Turion II M520 2,3Ghz CPU, but it will not do frequency scaling.
I use my laptop on the go and it's not needed for it to run at 2,3ghz all the time.
I installed cpufrequtils pmutils acpi libacpi.
i set the rights in
i edited /etc/conf.d/cpufreq so that i now looks like this:
#configuration for cpufreq control
# valid governors:
# ondemand, performance, powersave,
# conservative, userspace
governor="ondemand"
# limit frequency range (optional)
# valid suffixes: Hz, kHz (default), MHz, GHz, THz
min_freq="1.10GHz"
max_freq="2.3GHz"
# use freq to set up the exact cpu frequency using it with userspace governor
#freq=
I did a "modprobe cpufreq_ondemand" and it gives me no errors, this is the same for performance, powersave, userspace aswell.
however when i try to "sudo /etc/rc.d/cpufreq start" it gives me this error:
grep: /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_governors: No such file or directory
, cpu 0wrong, unknown or unhandled CPU?
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not available,
for example because of hardware which cannot be set to a specific frequency
or because the userspace governor isn't loaded?
1wrong, unknown or unhandled CPU?
Error setting new values. Common errors:
- Do you have proper administration rights? (super-user?)
- Is the governor you requested available and modprobed?
- Trying to set an invalid policy?
- Trying to set a specific frequency, but userspace governor is not available,
for example because of hardware which cannot be set to a specific frequency
or because the userspace governor isn't loaded?
and cpufreq-info gives me
driver: powernow-k8
CPUs which run at the same hardware frequency: 1
CPUs which need to have their frequency coordinated by software: 1
maximum transition latency: 8.0 us.
hardware limits: 800 MHz - 2.30 GHz
available frequency steps: 2.30 GHz, 2.10 GHz, 1.50 GHz, 1.10 GHz, 800 MHz
available cpufreq governors: ondemand, performance
current policy: frequency should be within 800 MHz and 2.30 GHz.
The governor "performance" may decide which speed to use
within this range.
current CPU frequency is 2.30 GHz (asserted by call to hardware).
Under ubuntu it works just fine so the processor supports it, what am i doing wrong here ? anyone got any suggestion ?
Last edited by Dennis Beekman (2011-01-22 16:23:20)

Answer 1

i seems to have gotten it to frequency scale... but it is not working correctly yet.
I was starting acpi_cpufreq as the driver when should have been using powernow-k8 so now it scales...
I used the command
echo "95" > /sys/devices/system/cpu/cpufreq/ondemand/up_threshold
Edit:
It turns out that the ondemand option it very unstable, i now use conservative and this seems fine for now.
So this problem has been solved !!
Last edited by Dennis Beekman (2011-01-22 16:22:55)