Speedstep doesn't work on Centrino notebooks for Fedora Core 6

Phil Knirsch pknirsch at redhat.com
Thu Oct 26 13:17:50 UTC 2006


Julian Yap wrote:
> Hi,
> 
> I have a Dell Inspiron 6000 notebook.
> 
> I'm running a Intel(R) Pentium(R) M processor 1.73GHz CPU.
> 
> I noticed during boot up, I get an error that can be reproduced when I 
> try and start up the cpuspeed service.
> 
> # /etc/init.d/cpuspeed start
> FATAL: Error inserting acpi_cpufreq 
> (/lib/modules/2.6.18-1.2798.fc6/kernel/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.ko): 
> No such device
> 
> I've noticed that Fedora doesn't include the speedstep-centrino.ko 
> module.  Normally it would be located in:
> /lib/modules/2.6.18-1.2798.fc6/kernel/arch/i386/kernel/cpu/cpufreq/
> 
> Would this be the issue?
> 
> There's a few bugs in Bugzilla if you search for acpi_cpufreq in Summary.
> 
> This bug prevents the CPU from stepping down the lower speed (thus 
> running all the time at the full speed).
> 
> Regards,
> Julian

Hm, thats a little strange. Probably Dave can better answer this as it's 
a kernel matter, but if this driver is by default in the upstream kernel 
i don't see a reason why i shouldn't be built except if it has some 
serious know issues.

Read ya, Phil

-- 
Philipp Knirsch      | Tel.:  +49-711-96437-470
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