chances are high that the older version also printed a message to dmesg saying that it was deprecated, and going away in favor of acpi-cpufreq
Try using that module instead.

Thanks for info, getting too late in CH, should have dmesg'ed the old kernel.
acpi-cpufreq resolves the problem.
I'm suggesting to mark the module in the kernel config ui as deprecated.

Reply-To: akpm@linux-foundation.org

On Wed, 22 Aug 2007 15:12:09 -0700 (PDT)
bugme-daemon@bugzilla.kernel.org wrote:

> http://bugzilla.kernel.org/show_bug.cgi?id=8924
> 
>            Summary: module speedstep-centrino does not load
>            Product: Drivers
>            Version: 2.5
>      KernelVersion: 2.6.23-rc3
>           Platform: All
>         OS/Version: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Other
>         AssignedTo: drivers_other@kernel-bugs.osdl.org
>         ReportedBy: frank@harenberg.ch
> 
> 
> Most recent kernel where this bug did not occur:2.6.22
> Distribution:gentoo
> Hardware Environment: Intel Centrino Duo, cpu family 6, model 14, Model Name
> T2300 In a Dell Inspiron 9400.
> Software Environment: i386
> Problem Description: modprobe speedstep-centrino quits with error "no such
> device"
> same module loads successfully with older versions on the same computer.
> Steps to reproduce:
> modprobe speedstep-centrino
> 

I'd have thought that a lot of people would be seeing this?

Oh well.  Michal, can we please track this as a post-2.6.22 regression?

Thanks.

This isn't a regression. It's intentional deprecation that has been warned about since October 2006.

The speedstep-centrino driver itself will remain however for systems that don't have working/present ACPI tables.

On Wed, 22 Aug 2007 16:44:51 -0700
Andrew Morton <akpm@linux-foundation.org> wrote:
> > Problem Description: modprobe speedstep-centrino quits with error
> > "no such device"


does the acpi-cpufreq driver work? on such new hardware that really
should be used rather than the legacy-hw speedstep-centrino

On Thursday 23 August 2007 02:44:51 Andrew Morton wrote:
> On Wed, 22 Aug 2007 15:12:09 -0700 (PDT)
>
> bugme-daemon@bugzilla.kernel.org wrote:
> > http://bugzilla.kernel.org/show_bug.cgi?id=8924
> >
> >            Summary: module speedstep-centrino does not load
> >            Product: Drivers
> >            Version: 2.5
> >      KernelVersion: 2.6.23-rc3
> >           Platform: All
> >         OS/Version: Linux
> >               Tree: Mainline
> >             Status: NEW
> >           Severity: normal
> >           Priority: P1
> >          Component: Other
> >         AssignedTo: drivers_other@kernel-bugs.osdl.org
> >         ReportedBy: frank@harenberg.ch
> >
> >
> > Most recent kernel where this bug did not occur:2.6.22
> > Distribution:gentoo
> > Hardware Environment: Intel Centrino Duo, cpu family 6, model 14, Model
> > Name T2300 In a Dell Inspiron 9400.
> > Software Environment: i386
> > Problem Description: modprobe speedstep-centrino quits with error "no
> > such device"
> > same module loads successfully with older versions on the same computer.
> > Steps to reproduce:
> > modprobe speedstep-centrino
>
> I'd have thought that a lot of people would be seeing this?
>
> Oh well.  Michal, can we please track this as a post-2.6.22 regression?

Also can be reproduced on "Intel(R) Core(TM)2 Duo CPU     T7300  @ 2.00GHz, 
cpu family 6, model 15" . Btw acpi-cpufreq works fine.

Regards,
ismail