[Solved] cpufreq not working

[kolosus]

I've recently installed 2010.12. It is a fresh install on a HP TC4400. Intel 2.0 dual processor. Nothing fancy.

cpufreq doesn't seem to be working. I've tried setting cpufreq to not start at boot in pcc. I will unselect the "start at boot" option but at next boot up it is ticked again. I tried stopping it and restarting it... but I cannot seem to stop it. Clicking on start gives me the stop=ok, start=ok dialog... but freq stays at 2.0. In 2009 and other iterations of 2010 it would drop to 1.0 and go up to 2.0 as necessary.

I tried
[root@localhost ~]# cpufreq-info
cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
  no or unknown cpufreq driver is active on this CPU
  maximum transition latency: 0.00 ms.
analyzing CPU 1:
  no or unknown cpufreq driver is active on this CPU
  maximum transition latency: 0.00 ms.

Any ideas folks?

[coffeetime]

Driver problem. Mine [using 2.6.33.7-pclos5.pae]:

$ cpufreq-info
cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009                                                                                                                          
Report errors and bugs to cpufreq@vger.kernel.org, please.                                                                                                                              
analyzing CPU 0:                                                                                                                                                                        
  driver: acpi-cpufreq                                                                                                                                                                  
  CPUs which run at the same hardware frequency: 0 1                                                                                                                                    
  CPUs which need to have their frequency coordinated by software: 0                                                                                                                    
  maximum transition latency: 10.0 us.                                                                                                                                                  
  hardware limits: 800 MHz - 2.67 GHz                                                                                                                                                  
  available frequency steps: 2.67 GHz, 2.67 GHz, 2.13 GHz, 1.60 GHz, 800 MHz                                                                                                            
  available cpufreq governors: ondemand, conservative, powersave, userspace, performance                                                                                                
  current policy: frequency should be within 800 MHz and 2.67 GHz.                                                                                                                      
                  The governor "ondemand" may decide which speed to use                                                                                                                
                  within this range.                                                                                                                                                    
  current CPU frequency is 800 MHz.                                                                                                                                                    
analyzing CPU 1:                                                                                                                                                                        
  driver: acpi-cpufreq                                                                                                                                                                  
  CPUs which run at the same hardware frequency: 0 1                                                                                                                                    
  CPUs which need to have their frequency coordinated by software: 1                                                                                                                    
  maximum transition latency: 10.0 us.                                                                                                                                                  
  hardware limits: 800 MHz - 2.67 GHz
  available frequency steps: 2.67 GHz, 2.67 GHz, 2.13 GHz, 1.60 GHz, 800 MHz
  available cpufreq governors: ondemand, conservative, powersave, userspace, performance
  current policy: frequency should be within 800 MHz and 2.67 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 800 MHz.

Konsole/su:

Code:

modprobe acpi-cpufreq

Try again cpufreq-info.

[kolosus]

Thanks coffeetime. That worked.

unfortunately it doesn't survive reboots. Suggestions?

Add "modprobe acpi-cpufreq" to rc.local?

[menotu]

There is an updated version of - cpufrequtils 007-2 - in the testing section of the repos which you may want to try.

Remember of course that as it's still in the testing section it may not be fully functional

[coffeetime]

Konsole:

Code:

kdesu dolphin /etc/modprobe.preload

and add acpi-cpufreq
Save! Reboot.

If it won't work, try to add in /etc/modprobe.preload:

acpi-cpufreq
cpufreq_ondemand
cpufreq_powersave
cpufreq_conservative

Go to /etc/sysconfig/cpufreq and uncomment #GOVERNOR=.... [remove the ”#” character from the beginning of the line]. It should read like this:

GOVERNOR=ondemand

Save! Reboot.

[kolosus]

Thanks again Coffeetime. Adding the line acpi-cpufreq to modprobe.preload worked. I didn't try the next.

Menotu. I didn't try your suggestion from the testing section of the repo. Thanks anyway.