cpufreq doesn't recognise my pentium m

cpufreq doesn't recognise my pentium m

[Tim Butler]

Hello,

I recently ran into some trouble with CPU frequency scaling on my sony
vaio laptop. I'm running a fresh install of debian etch with a custom
kernel compiled from the latest 2.6.18 debian kernel sources, with:

CONFIG_X86_SPEEDSTEP_CENTRINO=y
CONFIG_X86_SPEEDSTEP_CENTRINO_TABLE=y

Here is the cpufreq debug output:

Jan  6 18:01:31 mitre kernel: Kernel command line: root=/dev/sda2 ro cpufreq.debug=7
Jan  6 18:01:32 mitre kernel: cpufreq-core: trying to register driver centrino
Jan  6 18:01:32 mitre kernel: cpufreq-core: adding CPU 0
Jan  6 18:01:32 mitre kernel: speedstep-centrino: found unsupported CPU with Enhanced SpeedStep: send /proc/cpuinfo to cpufreq@lists.linux.org.uk
Jan  6 18:01:32 mitre kernel: cpufreq-core: initialization failed
Jan  6 18:01:32 mitre kernel: cpufreq-core: no CPU initialized for driver centrino
Jan  6 18:01:32 mitre kernel: cpufreq-core: unregistering CPU 0

and here are the requested contents of /proc/cpuinfo:

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 13
model name	: Intel(R) Pentium(R) M processor 2.13GHz
stepping	: 8
cpu MHz		: 2128.241
cache size	: 2048 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu 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
bogomips	: 4260.33

Thanks,
Tim
-- 
************************************************************************
Tim Butler
Max Planck Institute for Chemistry     Tel: ++49/6131/305434
Department of Airchemistry             FAX: ++49/6131/305511
Postfach 3060                          email: tmb@mpch-mainz.mpg.de
55020 Mainz, Germany                   http://www.mpch-mainz.mpg.de
************************************************************************

Re: cpufreq doesn't recognise my pentium m

[Dominik Brodowski]

Hi,

On Sat, Jan 06, 2007 at 07:19:53PM +0100, Tim Butler wrote:
> I recently ran into some trouble with CPU frequency scaling on my sony
> vaio laptop. I'm running a fresh install of debian etch with a custom
> kernel compiled from the latest 2.6.18 debian kernel sources, with:
> 
> CONFIG_X86_SPEEDSTEP_CENTRINO=y
> CONFIG_X86_SPEEDSTEP_CENTRINO_TABLE=y

Does CONFIG_X86_ACPI_CPUFREQ work? Also, you might have more luck with a
more recent kernel...

	Dominik