Intel Celeron M 530 cpu not recognized by cpufreq nor p4_clockmod

Intel Celeron M 530 cpu not recognized by cpufreq nor p4_clockmod

[adaca]

Hi,
on my new Toshiba A20 laptop I've never been able to see cpufreq working, so the cpu is always at max speed (1.73GHz); this applies to kernel 2.6.23 on both Ubuntu 7.10 and Fedora 8, and now 2.6.24 on Fedora (2.6.24.4-64.fc8).
This post says I need the p4_clockmod driver: 
http://lists.opensuse.org/opensuse-bugs/2008-03/msg05714.html
So I compiled the p4_clockmod module from the kernel sources but when I do:
modprobe p4_clockmod
I get:
FATAL: Error inserting p4_clockmod (/lib/modules/2.6.24.4-64.fc8/kernel/arch/x86/kernel/cpu/cpufreq/p4-clockmod.ko): No such device
Here's what I found in the syslog:
Apr  5 10:51:12 amc kernel: p4-clockmod: Unknown p4-clockmod-capable CPU. Please send an e-mail to <cpufreq@lists.linux.org.uk>
And here's my /proc/cpuinfo output:
[root@amc 2.6.24.4-64.fc8]# cat /proc/cpuinfo 
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 22
model name      : Intel(R) Celeron(R) CPU          530  @ 1.73GHz
stepping        : 1
cpu MHz         : 1729.036
cache size      : 1024 KB
fdiv_bug        : no
hlt_bug         : no
f00f_bug        : no
coma_bug        : no
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx lm constant_tsc up arch_perfmon pebs bts pni monitor ds_cpl tm2 ssse3 cx16 xtpr lahf_lm
bogomips        : 3460.44
clflush size    : 64

Please help!
Thank you
Adalberto M. Caccia


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Re: Intel Celeron M 530 cpu not recognized by cpufreq nor p4_clockmod

[Dominik Brodowski]

Hi,

On Sat, Apr 05, 2008 at 11:04:38AM +0200, adaca@tiscali.it wrote:
> on my new Toshiba A20 laptop I've never been able to see cpufreq working, so the cpu is always at max speed (1.73GHz); this applies to kernel 2.6.23 on both Ubuntu 7.10 and Fedora 8, and now 2.6.24 on Fedora (2.6.24.4-64.fc8).
> This post says I need the p4_clockmod driver: 
> http://lists.opensuse.org/opensuse-bugs/2008-03/msg05714.html

Well, the p4 clockmod driver is only useful in rare corner cases unlikely to
be relevant on your system, and the hardware you own (Celeron) doesn't
support proper CPU frequency scaling.

	Dominik