[Bug 7514] No centrino-speedstepping w/ HP nx7400 (rh402et)

[Bug 7514] No centrino-speedstepping w/ HP nx7400 (rh402et)

[bugme-daemon]

http://bugzilla.kernel.org/show_bug.cgi?id=7514





------- Additional Comments From public.email@web.de  2006-11-13 12:10 -------
Created an attachment (id=9487)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=9487&action=view)
acpidump of nx7400


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[Bug 7514] No centrino-speedstepping w/ HP nx7400 (rh402et)

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http://bugzilla.kernel.org/show_bug.cgi?id=7514





------- Additional Comments From public.email@web.de  2006-11-13 12:10 -------
Created an attachment (id=9488)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=9488&action=view)
dmesg of nx7400


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[Bug 7514] No centrino-speedstepping w/ HP nx7400 (rh402et)

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http://bugzilla.kernel.org/show_bug.cgi?id=7514





------- Additional Comments From public.email@web.de  2006-11-13 12:11 -------
Created an attachment (id=9489)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=9489&action=view)
kernconfig of my nx7400


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[Bug 7514] No centrino-speedstepping w/ HP nx7400 (rh402et)

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http://bugzilla.kernel.org/show_bug.cgi?id=7514





------- Additional Comments From public.email@web.de  2006-11-13 12:28 -------
Created an attachment (id=9490)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=9490&action=view)
lshw output of nx7400


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[Bug 7514] No centrino-speedstepping w/ HP nx7400 (rh402et)

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------- Additional Comments From venkatesh.pallipadi@intel.com  2006-11-13 16:21 -------
Can you try modprobe of 'acpi-cpufreq' and check whether that one has any luck?


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[Bug 7514] No centrino-speedstepping w/ HP nx7400 (rh402et)

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------- Additional Comments From public.email@web.de  2006-11-14 09:51 -------
Nope, cpufreq doesn't come up:

root@backofen:~$ modprobe acpi-cpufreq
FATAL: Error inserting acpi_cpufreq 
(/lib/modules/2.6.17-10-generic/kernel/arch/i386/kernel/cpu/cpufreq/acpi-cpufreq.ko): 
No such device

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[Bug 7514] No centrino-speedstepping w/ HP nx7400 (rh402et)

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------- Additional Comments From meskes@debian.org  2006-11-18 03:12 -------
Created an attachment (id=9557)
 --> (http://bugzilla.kernel.org/attachment.cgi?id=9557&action=view)
Unknown cpu

The problem is that the CPU is not known to the speedstep-centrino driver. It
is model 15 but there is no entry for a model number 15 in the driver. However,
even adding this model number doesn't make it work, but hopefully this
additional info will help. Attached is my cpuinfo file as I seem to have the
same notebook.

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[Bug 7514] No centrino-speedstepping w/ HP nx7400 (rh402et)

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http://bugzilla.kernel.org/show_bug.cgi?id=7514

venkatesh.pallipadi@intel.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
              Owner|cpufreq@www.linux.org.uk    |venkatesh.pallipadi@intel.co
                   |                            |m
             Status|NEW                         |ASSIGNED



------- Additional Comments From venkatesh.pallipadi@intel.com  2006-11-18 19:44 -------
Model numbers in speedstep-centrino are for legacy reasons. Models numbers are 
not required for all CPUs that the driver supports. Kernel ideally gets all 
the required information from BIOS using ACPI and enable speedstep. That is 
how speedstep is designed to work. Just that BIOS folks messes up things from 
time to time. I haven't yet actually looked at acpidump in this case to figure 
out whether the BIOS is the problem here. Will do it soon.

I the mean time can you make sure that you are running with latest BIOS and 
also check whether there are any speedstep related option in BIOS and if it is 
there make sure they are enabled. They are typically called as Enhanced 
Speedstep, EIST, Intel Speedstep or similar names.

Also, does any of the driver (acpi_cpufreq or speedstep_centrino) used to work 
on this system with any of the earlier kernels?

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