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simuru

Member

Registered: 2008-07-13

Posts: 15

cpufreq on dell xps 1330 (core 2duo t8100)

Hey there,
cpufreq does not seem to work on my notebook, it never bothored me, but now its freaking hot outside and my notebook goes nuts...

output from /proc/cpuinfo:

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Intel(R) Core(TM)2 Duo CPU     T8100  @ 2.10GHz
stepping        : 6
cpu MHz         : 2094.732
cache size      : 3072 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips        : 4191.02
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 23
model name      : Intel(R) Core(TM)2 Duo CPU     T8100  @ 2.10GHz
stepping        : 6
cpu MHz         : 2094.732
cache size      : 3072 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
apicid          : 1
initial apicid  : 1
fpu             : yes
fpu_exception   : yes
cpuid level     : 10
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm tpr_shadow vnmi flexpriority
bogomips        : 4191.07
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual

output of modprobe:

@>:: sudo modprobe acpi-cpufreq
FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.34-ARCH/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko): No such device

Even after consulting google i can not find a solution.
Does anyone now whats missing?

Cheerio Simu

Varg

Member

From: Belgium

Registered: 2010-07-07

Posts: 272

Re: cpufreq on dell xps 1330 (core 2duo t8100)

This can probably help you [wiki]cpufrequtils[/wiki]

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stqn

Member

Registered: 2010-03-19

Posts: 1,191

Website

Re: cpufreq on dell xps 1330 (core 2duo t8100)

If it's the same problem as with my (Pentium-M) ASUS laptop, then your bios doesn't conform to what acpi-cpufreq expects. The kernel guys don't care about the thousands of people in that case and tell them just to upgrade their bios (even when there's no upgrade and there never will be) or fix it themselves. In my case I found out I could patch the (deprecated) speedstep-centrino module to make it work, but I don't know about core2duo cpus...

See DSDT on the wiki.

(And no, I don't think cpufreq-utils will be of any help.)

a_priori_mouse

Member

Registered: 2010-05-16

Posts: 38

Re: cpufreq on dell xps 1330 (core 2duo t8100)

Make sure that all  BIOS special modes for cpu are disabled (for example, energy saving). These BIOS options sometimes conflict with acpi-cpufreq