CPUFreq and .pae.bfs kernel

[sling-shot]

On my AMD E-450 based notebook and standard .bfs kernel, I could get cpufreq to work. But on the same installation on switching to .pae.bfs kernel it does not seem to work.
Here is the cpufreq-info output:

Code: [Select]

cpufrequtils 008: 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.

No other settings have been changed.

I have set it up using the standard guidelines posted by Texstar. (I had to get the stepping values through online search)

[gseaman]

Is this the 2.6.38 or the 3.2 kernels?

Galen

[Yankee]

curious...

/etc/modprobe.preload.d/cpufreq

which is a text file, does it look lik this :

p4-clockmod (or some other cpu driver)
cpufreq_performance
cpufreq_powersave
cpufreq_conservative
cpufreq_ondemand


or the same included in $lsmod

[sling-shot]

Is this the 2.6.38 or the 3.2 kernels?

Galen

It is the 3.2 series.

[gseaman]

I will look at the configuration of the .bfs and .pae.bfs 3.2 kernels with regard to cpufreq modules. If there is a difference, I'll make sure the 3.4 kernels get it right.

Galen

[critter]

I have no problem with the 3.2 kernels

$ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq
1600000                                                                                         
$ uname -r                                                                               
3.2.18-pclos2.pae.bfs                                                         
$ cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
3601000

Abbreviated output from cpufreq-info:
$ cpufreq-info
analyzing CPU 0:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0 1 2 3
  hardware limits: 1.60 GHz - 3.60 GHz
  current CPU frequency is 1.60 GHz.

Color scheme © Old-Polack

[sling-shot]

I had a Intel Atom based netbook earlier and now have this AMD E450 based notebook. In both, I have noticed that the directory structure mentioned above does not exist.
There is /sys/devices/system/cpu/cpufreq/ which is blank and there is no "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq" (the bold part does not exist)

[critter]

Did you remember to start the cpufreq service in pcc?

If you did and you have installed  both packages as per Tex's instructions then you may need to install the pwernowd package. This will also need to be started and set to start at boot in pcc.

Look here http://pastebin.com/pQpan64H

HTH 

[Yankee]

I had a Intel Atom based netbook earlier and now have this AMD E450 based notebook. In both, I have noticed that the directory structure mentioned above does not exist.
There is /sys/devices/system/cpu/cpufreq/ which is blank and there is no "/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq" (the bold part does not exist)

My Atom has the second file "scaling_cur_freq" which is a one line text file with
the current cpu freq, of course.   

Trying loading cpufreq-set -r -g performance    manually from
the terminal.

[sling-shot]

I want to clarify that at present I do not have that Atom which gave up the ghost due to motherboard issues. Presently all of my posts concern the AMD E450 based notebook by Samsung listed in my signature.

Trying cpufreq-set -r -g performance as root results in Segmentation fault
Present kernel tested with is 3.2.18-pclos2.pae.bfs

[sling-shot]

Did you remember to start the cpufreq service in pcc?

If you did and you have installed  both packages as per Tex's instructions then you may need to install the pwernowd package. This will also need to be started and set to start at boot in pcc.

HTH 

Yes and no benefit.

[Yankee]

Trying cpufreq-set -r -g performance as root results in Segmentation fault
Present kernel tested with is 3.2.18-pclos2.pae.bfs

Sorry, well then I'd say that package is broke.   If a driver is installed, the config
file setup, sometimes it doesn't work, and I manually run the commands in
rc.local, which isn't exactly right, of course.   If it seg faults, never had that
event happen in rc.local.   

I wish install would let it run at max speed only rather than on-demand anyway, which
appears to be the default.

[sling-shot]

UPDATE:

Installed 3.4.11 BFS kernel from Testing.

cpufreq-info now shows :

Code: [Select]

cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
  driver: powernow-k8
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 1000 ns.
  hardware limits: 825 MHz - 1.65 GHz
  available frequency steps: 1.65 GHz, 1.32 GHz, 825 MHz
  available cpufreq governors: ondemand, userspace, performance
  current policy: frequency should be within 825 MHz and 1.65 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 825 MHz (asserted by call to hardware).
analyzing CPU 1:
  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: 1000 ns.
  hardware limits: 825 MHz - 1.65 GHz
  available frequency steps: 1.65 GHz, 1.32 GHz, 825 MHz
  available cpufreq governors: ondemand, userspace, performance
  current policy: frequency should be within 825 MHz and 1.65 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 825 MHz (asserted by call to hardware).

No other changes were done.

[gseaman]

I upload a link to a 3.4.25-pclos1.pae.bfs for you to test. Then, I realized that this is not the testing section, so I took it out. If you are interested in testing this, I can pm you a link.

Galen

[sling-shot]

Kindly do. I would be glad to test it out.