[Help] I can't get Intel Speedstep working

[Help] I can't get Intel Speedstep working

[Robert Szalai]

Hello everybody,

I have a Shuttle K48 Barebone PC (Intel 945GC + ICH7 chipset) and a
Core 2 Duo E7300 CPU. I'm using Ubuntu 8.04 with 2.6.24-23-generic
kernel on my box. Everything works fine except Speedstep. When I try
to load acpi_cpufreq module, I get the following error:

$ sudo modprobe acpi_cpufreq
FATAL: Error inserting acpi_cpufreq
(/lib/modules/2.6.24-23-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko):
No such device

I've tried everything (other kernel versions, various patches) but the
result is the same.
I don't know if it is related to EIST or not but I've found these two
Exceptions in my dmesg:

[   20.675593] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
Processor Device is not present [20070126]
[   20.675599] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
Processor Device is not present [20070126]

After some research I've found that maybe a broken DSDT table is the
couse of my problem. I'm not an ACPI expert and I dont't know how to
locate and fix the problem in my DSDT. I've uploaded my dsdt.dsl to

http://www.easy-share.com/1903982677/dsdt.dsl

Any suggestions? I'd really like to use Speedstep on my Box.
You are my last hope Guys.

Thanks so much
Robert Szalai

Re: [Help] I can't get Intel Speedstep working

[Robert Hancock]

Robert Szalai wrote:
> Hello everybody,
> 
> I have a Shuttle K48 Barebone PC (Intel 945GC + ICH7 chipset) and a
> Core 2 Duo E7300 CPU. I'm using Ubuntu 8.04 with 2.6.24-23-generic
> kernel on my box. Everything works fine except Speedstep. When I try
> to load acpi_cpufreq module, I get the following error:
> 
> $ sudo modprobe acpi_cpufreq
> FATAL: Error inserting acpi_cpufreq
> (/lib/modules/2.6.24-23-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko):
> No such device
> 
> I've tried everything (other kernel versions, various patches) but the
> result is the same.
> I don't know if it is related to EIST or not but I've found these two
> Exceptions in my dmesg:
> 
> [   20.675593] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
> Processor Device is not present [20070126]
> [   20.675599] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
> Processor Device is not present [20070126]
> 
> After some research I've found that maybe a broken DSDT table is the
> couse of my problem. I'm not an ACPI expert and I dont't know how to
> locate and fix the problem in my DSDT. I've uploaded my dsdt.dsl to
> 
> http://www.easy-share.com/1903982677/dsdt.dsl
> 
> Any suggestions? I'd really like to use Speedstep on my Box.
> You are my last hope Guys.

Your system doesn't seem to have anything interesting regarding CPU 
frequency scaling in the DSDT, but it's often in the FADT instead. 
Posting a full acpidump might be more useful..

Also make sure that any BIOS settings to allow CPU frequency scaling are 
enabled.

Re: [Help] I can't get Intel Speedstep working

[Robert Hancock]

Robert Szalai wrote:
> Hello everybody,
> 
> I have a Shuttle K48 Barebone PC (Intel 945GC + ICH7 chipset) and a
> Core 2 Duo E7300 CPU. I'm using Ubuntu 8.04 with 2.6.24-23-generic
> kernel on my box. Everything works fine except Speedstep. When I try
> to load acpi_cpufreq module, I get the following error:
> 
> $ sudo modprobe acpi_cpufreq
> FATAL: Error inserting acpi_cpufreq
> (/lib/modules/2.6.24-23-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko):
> No such device
> 
> I've tried everything (other kernel versions, various patches) but the
> result is the same.
> I don't know if it is related to EIST or not but I've found these two
> Exceptions in my dmesg:
> 
> [   20.675593] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
> Processor Device is not present [20070126]
> [   20.675599] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
> Processor Device is not present [20070126]
> 
> After some research I've found that maybe a broken DSDT table is the
> couse of my problem. I'm not an ACPI expert and I dont't know how to
> locate and fix the problem in my DSDT. I've uploaded my dsdt.dsl to
> 
> http://www.easy-share.com/1903982677/dsdt.dsl
> 
> Any suggestions? I'd really like to use Speedstep on my Box.
> You are my last hope Guys.

Your system doesn't seem to have anything interesting regarding CPU 
frequency scaling in the DSDT, but it's often in the FADT instead. 
Posting a full acpidump might be more useful..

Also make sure that any BIOS settings to allow CPU frequency scaling are 
enabled.

Re: [Help] I can't get Intel Speedstep working

[Len Brown]

On Fri, 10 Apr 2009, Robert Hancock wrote:

> Robert Szalai wrote:
> > Hello everybody,
> > 
> > I have a Shuttle K48 Barebone PC (Intel 945GC + ICH7 chipset) and a
> > Core 2 Duo E7300 CPU. I'm using Ubuntu 8.04 with 2.6.24-23-generic
> > kernel on my box. Everything works fine except Speedstep. When I try
> > to load acpi_cpufreq module, I get the following error:

Please try 2.6.29.

> > $ sudo modprobe acpi_cpufreq
> > FATAL: Error inserting acpi_cpufreq
> > (/lib/modules/2.6.24-23-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko):
> > No such device
> > 
> > I've tried everything (other kernel versions, various patches) but the
> > result is the same.
> > I don't know if it is related to EIST or not but I've found these two
> > Exceptions in my dmesg:
> > 
> > [   20.675593] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
> > Processor Device is not present [20070126]
> > [   20.675599] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
> > Processor Device is not present [20070126]

This is actually sort of curious, but I'm too lazy to see why 2.6.24
blurts this.  Let me know if 2.6.29 still does.

> > After some research I've found that maybe a broken DSDT table is the
> > couse of my problem. I'm not an ACPI expert and I dont't know how to
> > locate and fix the problem in my DSDT. I've uploaded my dsdt.dsl to
> > 
> > http://www.easy-share.com/1903982677/dsdt.dsl
> > 
> > Any suggestions? I'd really like to use Speedstep on my Box.
> > You are my last hope Guys.
> 
> Your system doesn't seem to have anything interesting regarding CPU frequency
> scaling in the DSDT, but it's often in the FADT instead. Posting a full
> acpidump might be more useful..

yes, and the full dmesg please.
It is common for _PSS etc. to be dynamically loaded (though your DSDT has 
no Load's in it, so not in this case), or it could be included in an SSDT
that we'd see in the acpidump.

> Also make sure that any BIOS settings to allow CPU frequency scaling are
> enabled.

As it is a bare-bones system, you might also want to verify that you've
got the latest BIOS for the board.  It is possible that the BIOS 
you have doesn't know about the processor you have.

thanks,
-Len Brown, Intel Open Source Technology Center

Re: [Help] I can't get Intel Speedstep working

[Robert Szalai]

Thank you for your reply.

I'm using the latest kernel now (2.6.30 rc3) but the situation hasn't changed.
Actually I have no Speedstep option in my BIOS at all, but according to the
manufacturer it should work out of box (and it really works in Windows).
I've flashed the latest BIOS of course and my CPU is supported by the
manufacturer
according to their website. (It's a Shuttle K48 by the way).

Here is my dmesg and full acpidump:

http://www.easy-share.com/1904779435/dmesg.txt
http://www.easy-share.com/1904779378/acpidump.txt

It is strange that I can't find any FADT table after extracting my
acpidump (with acpixtract -a).
Is there any hope for fixing Speedstep on my box?

Thank you very much
Robert Szalai

2009/4/11 Len Brown <lenb@kernel.org>:
>
>
> On Fri, 10 Apr 2009, Robert Hancock wrote:
>
>> Robert Szalai wrote:
>> > Hello everybody,
>> >
>> > I have a Shuttle K48 Barebone PC (Intel 945GC + ICH7 chipset) and a
>> > Core 2 Duo E7300 CPU. I'm using Ubuntu 8.04 with 2.6.24-23-generic
>> > kernel on my box. Everything works fine except Speedstep. When I try
>> > to load acpi_cpufreq module, I get the following error:
>
> Please try 2.6.29.
>
>> > $ sudo modprobe acpi_cpufreq
>> > FATAL: Error inserting acpi_cpufreq
>> > (/lib/modules/2.6.24-23-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko):
>> > No such device
>> >
>> > I've tried everything (other kernel versions, various patches) but the
>> > result is the same.
>> > I don't know if it is related to EIST or not but I've found these two
>> > Exceptions in my dmesg:
>> >
>> > [   20.675593] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
>> > Processor Device is not present [20070126]
>> > [   20.675599] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
>> > Processor Device is not present [20070126]
>
> This is actually sort of curious, but I'm too lazy to see why 2.6.24
> blurts this.  Let me know if 2.6.29 still does.
>
>> > After some research I've found that maybe a broken DSDT table is the
>> > couse of my problem. I'm not an ACPI expert and I dont't know how to
>> > locate and fix the problem in my DSDT. I've uploaded my dsdt.dsl to
>> >
>> > http://www.easy-share.com/1903982677/dsdt.dsl
>> >
>> > Any suggestions? I'd really like to use Speedstep on my Box.
>> > You are my last hope Guys.
>>
>> Your system doesn't seem to have anything interesting regarding CPU frequency
>> scaling in the DSDT, but it's often in the FADT instead. Posting a full
>> acpidump might be more useful..
>
> yes, and the full dmesg please.
> It is common for _PSS etc. to be dynamically loaded (though your DSDT has
> no Load's in it, so not in this case), or it could be included in an SSDT
> that we'd see in the acpidump.
>
>> Also make sure that any BIOS settings to allow CPU frequency scaling are
>> enabled.
>
> As it is a bare-bones system, you might also want to verify that you've
> got the latest BIOS for the board.  It is possible that the BIOS
> you have doesn't know about the processor you have.
>
> thanks,
> -Len Brown, Intel Open Source Technology Center
>
>
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Re: [Help] I can't get Intel Speedstep working

[Robert Szalai]

Could somebody check what's wrong with my DSDT table please?
CPU throttling works on Windows, but I can't get it work on Linux :(((

Here is my dsdt.dsl:
http://www.easy-share.com/1903982677/dsdt.dsl

> Hello everybody,
>
> I have a Shuttle K48 Barebone PC (Intel 945GC + ICH7 chipset) and a
> Core 2 Duo E7300 CPU. I'm using Ubuntu 8.04 with 2.6.24-23-generic
> kernel on my box. Everything works fine except Speedstep. When I try
> to load acpi_cpufreq module, I get the following error:
>
> $ sudo modprobe acpi_cpufreq
> FATAL: Error inserting acpi_cpufreq
> (/lib/modules/2.6.24-23-generic/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko):
> No such device
>
> I've tried everything (other kernel versions, various patches) but the
> result is the same.
> I don't know if it is related to EIST or not but I've found these two
> Exceptions in my dmesg:
>
> [   20.675593] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
> Processor Device is not present [20070126]
> [   20.675599] ACPI Exception (processor_core-0822): AE_NOT_FOUND,
> Processor Device is not present [20070126]
>
> After some research I've found that maybe a broken DSDT table is the
> couse of my problem. I'm not an ACPI expert and I dont't know how to
> locate and fix the problem in my DSDT. I've uploaded my dsdt.dsl to
>
> http://www.easy-share.com/1903982677/dsdt.dsl
>
> Any suggestions? I'd really like to use Speedstep on my Box.
> You are my last hope Guys.
>
> Thanks so much
> Robert Szalai
>