Bug 357553 - acpi-cpufreq fails to load on an Intel Core 2 Duo T7250 with kernel 2.6.22-16
Summary: acpi-cpufreq fails to load on an Intel Core 2 Duo T7250 with kernel 2.6.22-16
Status: RESOLVED DUPLICATE of bug 357516
Alias: None
Product: openSUSE 10.3
Classification: openSUSE
Component: Kernel (show other bugs)
Version: Final
Hardware: x86-64 Other
: P5 - None : Major (vote)
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Reported: 2008-01-31 11:01 UTC by Jonas Balderud
Modified: 2008-02-01 08:58 UTC (History)
3 users (show)

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Found By: Customer
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Description Jonas Balderud 2008-01-31 11:01:54 UTC 
Using the online update service that comes bundled with OpenSUSE 10.3 I recently upgraded my kernel from 2.6.22-13-0.3 to 2.6.22-16. After doing so the acpi-cpufreq module no longer loads, resulting in a loss of CPU frequency scaling.  I have subsequently downgraded the kernel to 2.6.22-13-0.3 and that seems to have resolved the problem. I therefore conclude that a bug must have been introduced in the ACPI sub system between kernel 2.6.22-13-0.3 and 2.6.22-16 (both are the default kernels for the x86_64 architecture)

Using kernel 2.6.22-16 and manually trying to load the acpi-cpufreq module results in an error message that states "no such device".

I am running a Compaq 6510b laptop with Centrino chipset and 1 GB of ram. Please advice if more information is needed
Comment 1 Pal Korossy 2008-01-31 14:33:45 UTC 
The same problem on my Acer TM6291 with Core 2 Duo T5500.
Comment 2 Jonas Balderud 2008-01-31 15:13:43 UTC 
I forgot to add that I also tried to load the acpi-cpufreq module from the 2.6.22-13-0.3 kernel into the 2.6.22-16 kernel. This too resulted in an error message stating "no such device".
Comment 3 Michael Keyl 2008-01-31 16:47:40 UTC 
I have the same problem with a Thinkpad R61 (89196VG) with a Core 2 Duo T7300. In addition there are several ACPI boot.msg which are probably related (cf. attachment).
Comment 4 Michael Keyl 2008-01-31 16:55:31 UTC 
Oops, just seen that this is a duplicate of bug # 357516. All info I could provide are already posted there.
Comment 5 Greg Kroah-Hartman 2008-01-31 17:13:27 UTC 

*** This bug has been marked as a duplicate of bug 357516 ***
Comment 6 Robert Gartler 2008-02-01 08:58:31 UTC 
Same problem on Dell Latitude D820 with Core Duo.