CPU disappeared

[Search4Lancer]

Last night, I finally found a fix to my overheating problems - by reducing the max CPU speed in whatever that file name was in /sys/devices/system/cpu/cpu0/cpufreq/

Anyway, after unintentional reboot (power outage), now all of a sudden I have no processor! Power Manager shows nothing, and /sys/devices/system/cpu/cpu0/ is empty. So now, I can't do anything to regulate my invisible CPU's speed, which is causing frequent overheating. How can I get it back?

Thanks

[gnowak]

Re: CPU disappeared

You can try to reinstall cpufreq.

sudo aptitude reinstall cpufreqd

You could also try to install some other software by searching with:

apt-cache search cpufreq

[Search4Lancer]

Re: CPU disappeared

Upon installing cpufreqd (not reinstalling, but installing in general), I got this:

Setting up cpufreqd (2.2.1-2) ...
No cpufreq interface found, not starting cpufreqd.

Remember, my problem isn't the lack of a program to regulate my processor speed, my problem is the system/OS not knowing the processor is there in the first place, hence /sys/devices/system/cpu/cpu0/ being empty and Power Manager not showing it as well.

KSysGuard shows it running at a constant 1734 (MHz?)

[gnowak]

Re: CPU disappeared

Hmm

If you get output about the cpu here, the system must know about the cpu.

sudo lshw -C cpu

Maybe you can search for cpu here:
http://ubuntuguide.org/wiki/Ubuntu:Feisty
or
http://doc.gwos.org/index.php/CPUFreq

Don't really know what else to do?

[SheeEttin]

Re: CPU disappeared

Which kernel are you using? And which processor (i.e. maker, model)?

[Search4Lancer]

Re: CPU disappeared

Kernel is 2.6.20-16-386.

lshw command returns the following:

 *-cpu
    description: CPU
    product: Intel(R) Pentium(R) M processor 1.73GHz
    vendor: Intel Corp.
    physical id: 4
    bus info: cpu@0
    version: 6.13.8
    slot: CPU 1
    size: 1729MHz
    capacity: 1729MHz
    width: 32 bits
    clock: 532MHz
    capabilities: fpu fpu_exception wp vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx est tm2

[Search4Lancer]

Re: CPU disappeared

Okay, apparently that directory was empty because cpufreqd wasn't running. So now it is (though it'd be nice if it would start on boot). I tweaked /etc/cpufreqd.conf a bit to knock down some numbers and such... so far, everything seems to be working fine. Fired up Kopete (which is always hard on my system) and the temp peaked at 88C, which in my experience with this laptop, is pretty great. So, the only thing missing yet is the Power Manager showing anything regarding my current frequency, or letting me change my frequency... which shouldn't be a problem anymore, since I knocked the max freq down.


So... how do I make cpufreqd start on boot?

[TedNig]

Re: CPU disappeared

So... how do I make cpufreqd start on boot?


Make a script and put it in /home/<user>/.kde/Autostart

Something like...

#!/bin/bash
cpufreqd


Just a thought...

GL!

[SheeEttin]

Re: CPU disappeared

That'd certainly do it if you wanted to run it as yourself, but if it needs root privileges, read /etc/init.d/README and look at the scripts there for reference. (Putting it in there won't execute it; it needs a symlink in at least one of the rc?.d directories. (Usual runlevel is 2, so you'd need rc2.d.))