Acer Aspire 4315 - CPU Freq Scaling not working.

[luddite666]

Hi all,

My CPU Frequency Scaling Monitor says that CPU Frequency Scaling is unsupported on this CPU. I have seen that others with Celeron M 530's and 540's can get frequncy scaling to work but i have had no such luck.

I have tried these threads and nada.

http://ubuntuforums.org/showthread.php?t=248867
http://www.uluga.ubuntuforums.org/sh...d.php?t=431331
http://www.howtoforge.com/cpu_frequency_scaling_ubuntu
CPU Specs: Celeron M 540 1.86 GHz

I have done :

luddite@ACER:~$ sudo modprobe p4_clockmod
[sudo] password for luddite:
FATAL: Error inserting p4_clockmod (/lib/modules/2.6.27-7-generic/kernel/arch/x86/kernel/cpu/cpufreq/p4-clockmod.ko): No such device
luddite@ACER:~$
luddite@ACER:~$ cpufreq-info
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to linux@brodo.de, please.
analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU
luddite@ACER:~$
luddite@ACER:~$ cpufreq-info
cpufrequtils 002: cpufreq-info (C) Dominik Brodowski 2004-2006
Report errors and bugs to linux@brodo.de, please.
analyzing CPU 0:
no or unknown cpufreq driver is active on this CPU

I know others running 8.10 and celeron M's can get the scaling working.

I have tried uninstalling powernod cpudyn and installing the other ones.

Currently i have this installed:

cpufrequtils
cpufreqd
kpowersave
powertop
lipowersave10
licpufreq0
laptop-mode-tools
powermgmnt-base
acpid

Thanks.
luddite

[benander]

Hi I have the exact same problem with my Acer Aspire 5315 running 8.10. I have tried: powernowd, powersaved, emifreq-applet, but none of them will work since I can't load the module.

Did you find a solution or figure out why we don't have /cpufreq in our cpu directory?

[luddite666]

Nope still looking into this every so often.

[ngsupb]

guys, do you know what to do?

I have the same problem

[benem3000]

Try this...

http://ubuntuforums.org/showthread.php?t=190921

Worked for me.
Hope it does for you.