Cpufrequtils module won't load [SOLVED]

Question

Hi All,
Am trying to get some power management working on my HTPC .
I have installed cpufrequtils and find I have the following modules available ..
ls /lib/modules/2.6.33-ARCH/kernel/arch/x86/kernel/cpu/cpufreq/
acpi-cpufreq.ko longhaul.ko powernow-k7.ko speedstep-smi.ko
cpufreq-nforce2.ko longrun.ko powernow-k8.ko
e_powersaver.ko p4-clockmod.ko speedstep-ich.ko
gx-suspmod.ko powernow-k6.ko speedstep-lib.ko
However when I try to load any of these modules I get a failure ..
modprobe acpi-cpufreq
FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.33-ARCH/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko): No such device
I have tried re-booting the box to make the modules visible .. but no difference ... I seem to remember a loader command to update the cache, can anyone remind me what it is?
NB: I have an Intel Core2 Duo E7300 CPU, and would like to underclock/undervolt it to get some power savings, as I am running at less than 20% cpu most of the time, even with 720p content. I thought I would do the frequency stuff in the OS and do the undervoltage stuff in the BIOS (unless someone can tell how to undervoltage in the OS).
Thanks.
Last edited by bmentink (2010-05-12 06:45:37)

Answer 1

[fabio@hp2735b ~]$ ls /lib/modules/$(uname -r)/kernel/drivers/cpufreq/
acpi-cpufreq.ko.gz          e_powersaver.ko.gz  pcc-cpufreq.ko.gz
cpufreq_conservative.ko.gz  freq_table.ko.gz    powernow-k6.ko.gz
cpufreq-nforce2.ko.gz       gx-suspmod.ko.gz    powernow-k7.ko.gz
cpufreq_ondemand.ko.gz      longhaul.ko.gz      powernow-k8.ko.gz
cpufreq_powersave.ko.gz     longrun.ko.gz       speedstep-ich.ko.gz
cpufreq_stats.ko.gz         mperf.ko.gz         speedstep-lib.ko.gz
cpufreq_userspace.ko.gz     p4-clockmod.ko.gz   speedstep-smi.ko.gz
[fabio@hp2735b ~]$ sudo modprobe acpi-cpufreq
FATAL: Error inserting acpi_cpufreq (/lib/modules/3.0-ARCH/kernel/drivers/cpufreq/acpi-cpufreq.ko.gz): No such device
same with powernow-k7
[fabio@hp2735b ~]$ sudo /etc/rc.d/cpufreq start
:: Setting cpufreq governing rules                                       [BUSY] grep: /sys/devices/system/cpu/cpu*/cpufreq/scaling_available_governors: No such file or directory
                                   , cpu 0Error 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?
                                                                         [DONE]
also updating my BIOS nothing changed.. I've a AMD Sempron processor
Last edited by fabioamd87 (2011-09-24 15:35:09)