ACPI on HP Pavilion dv2765tx, c-states problems

ACPI on HP Pavilion dv2765tx, c-states problems

[Michael Sotnikov]

Hi,

I hope, that I'm writing to the correct group. I've tried to find the
reason behind my problem, but didn't manage to.

The problem:
Can't start acpi_cpufreq ("No such device"), but p4_cpuclock driver
works well. In this case there is no c-state management (cpu is always
in C0).

I've decompiled dsdt - only some warnings about methods related to pci.
Checked _OSI() - nothing special.

There are errors in dmesg, related to cpu's info (truncated):
-----
[ 17.045653] ACPI Warning (tbutils-0217): Incorrect checksum in table 
[SSDT] -  E6, should be 38 [20070126]
....
[ 19.458760] ACPI Error (psargs-0355): [TS0T] Namespace lookup failure,
AE_NOT_FOUND
[ 19.458765] ACPI Error (psparse-0537): Method parse/execution failed
[\_PR_.CPU0._PDC] (Node f7c51b88), AE_NOT_FOUND
[ 19.459076] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
[ 19.459278] ACPI: SSDT 7FED09A4, 00C8 (r1 PmRef Cpu1Ist 3000 INTL 20061109)
[ 19.459465] ACPI: SSDT 7FED06E7, 0085 (r1 PmRef Cpu1Cst 3000 INTL 20061109)
[ 19.459641] ACPI Error (psargs-0355): [\_PR_.CPU0._PPC] Namespace
lookup failure, AE_NOT_FOUND
[ 19.459645] ACPI Error (psparse-0537): Method parse/execution failed
[\_PR_.CPU1._PPC] (Node f7ccf180), AE_NOT_FOUND
[ 19.459895] ACPI Error (psargs-0355): [\_PR_.CPU0._CST] Namespace
lookup failure, AE_NOT_FOUND
[ 19.459899] ACPI Error (psparse-0537): Method parse/execution failed
[\_PR_.CPU1._CST] (Node f7ccf1f8), AE_NOT_FOUND
[ 19.459979] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
--------

I've checked it with 2.6.25 kernel - same errors.
My main system (ubuntu 8.04):

$ uname -a
Linux astar-laptop 2.6.24-16-generic #1 SMP Thu Apr 10 13:23:42 UTC 2008 
i686 GNU/Linux

Is there any solutions, except waiting firmware update from laptop vendor?

Best regards,
Michael

Re: ACPI on HP Pavilion dv2765tx, c-states problems

[Michael Sotnikov]

"p4_cpuclock" means p4-clockmod.

Sorry.

Re: ACPI on HP Pavilion dv2765tx, c-states problems

[Alexey Starikovskiy]

Michael Sotnikov wrote:
> "p4_cpuclock" means p4-clockmod.
Don't use it. It does not save you any power, just makes your system slower.

Regards,
Alex.
>
> Sorry.
>
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Re: ACPI on HP Pavilion dv2765tx, c-states problems

[Alexey Starikovskiy]

Michael Sotnikov wrote:
> Hi,
>
> I hope, that I'm writing to the correct group. I've tried to find the
> reason behind my problem, but didn't manage to.
>
> The problem:
> Can't start acpi_cpufreq ("No such device"), but p4_cpuclock driver
> works well. In this case there is no c-state management (cpu is always
> in C0).
>
It might be that support for EST (enhanced speed-step) is disabled in BIOS.
In this case BIOS does not export PDC/PPC methods and acpi_cpufreq does 
not load.

Please check if your BIOS has EST  enabled.
If yes and you still can not load acpi_cpufreq, please provide acpidump 
output and /proc/cpuinfo.
> I've decompiled dsdt - only some warnings about methods related to pci.
> Checked _OSI() - nothing special.
>
> There are errors in dmesg, related to cpu's info (truncated):
> -----
> [ 17.045653] ACPI Warning (tbutils-0217): Incorrect checksum in table 
> [SSDT] -  E6, should be 38 [20070126]
> ....
> [ 19.458760] ACPI Error (psargs-0355): [TS0T] Namespace lookup failure,
> AE_NOT_FOUND
> [ 19.458765] ACPI Error (psparse-0537): Method parse/execution failed
> [\_PR_.CPU0._PDC] (Node f7c51b88), AE_NOT_FOUND
> [ 19.459076] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
> [ 19.459278] ACPI: SSDT 7FED09A4, 00C8 (r1 PmRef Cpu1Ist 3000 INTL 
> 20061109)
> [ 19.459465] ACPI: SSDT 7FED06E7, 0085 (r1 PmRef Cpu1Cst 3000 INTL 
> 20061109)
> [ 19.459641] ACPI Error (psargs-0355): [\_PR_.CPU0._PPC] Namespace
> lookup failure, AE_NOT_FOUND
> [ 19.459645] ACPI Error (psparse-0537): Method parse/execution failed
> [\_PR_.CPU1._PPC] (Node f7ccf180), AE_NOT_FOUND
> [ 19.459895] ACPI Error (psargs-0355): [\_PR_.CPU0._CST] Namespace
> lookup failure, AE_NOT_FOUND
> [ 19.459899] ACPI Error (psparse-0537): Method parse/execution failed
> [\_PR_.CPU1._CST] (Node f7ccf1f8), AE_NOT_FOUND
> [ 19.459979] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
> --------
>
> I've checked it with 2.6.25 kernel - same errors.
> My main system (ubuntu 8.04):
>
> $ uname -a
> Linux astar-laptop 2.6.24-16-generic #1 SMP Thu Apr 10 13:23:42 UTC 
> 2008 i686 GNU/Linux
>
> Is there any solutions, except waiting firmware update from laptop 
> vendor?
>
> Best regards,
> Michael
>
>
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> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: ACPI on HP Pavilion dv2765tx, c-states problems

[Michael Sotnikov]

I can't find my previous answer to group, just rewrite it.

Alexey Starikovskiy:
> Please check if your BIOS has EST  enabled.

there isn't any options about cpu, except C4 on/off

> If yes and you still can not load acpi_cpufreq, please provide acpidump 
> output and /proc/cpuinfo.

some information and attachments is here:
http://bugzilla.kernel.org/show_bug.cgi?id=10513

-- 
Best Regards,
Michael

Re: ACPI on HP Pavilion dv2765tx, c-states problems

[Zhao Yakui]

On Thu, 2008-04-24 at 00:02 +0900, Michael Sotnikov wrote:
> Hi,
> 
> I hope, that I'm writing to the correct group. I've tried to find the
> reason behind my problem, but didn't manage to.
> 
> The problem:
> Can't start acpi_cpufreq ("No such device"), but p4_cpuclock driver
> works well. In this case there is no c-state management (cpu is always
> in C0).
> 
> I've decompiled dsdt - only some warnings about methods related to pci.
> Checked _OSI() - nothing special.
> 
> There are errors in dmesg, related to cpu's info (truncated):
> -----
> [ 17.045653] ACPI Warning (tbutils-0217): Incorrect checksum in table 
> [SSDT] -  E6, should be 38 [20070126]
> ....
It seems that there are some errors in ACPI tables.
Will you please attach the output of acpidump?

It would be great if you can open a bug at
http://bugzilla.kernel.org/enter_bug.cgi?product=ACPI
and attach the acpidump/.config/dmesg/lspci -vxxx as attachments there.

thanks,
> [ 19.458760] ACPI Error (psargs-0355): [TS0T] Namespace lookup failure,
> AE_NOT_FOUND
> [ 19.458765] ACPI Error (psparse-0537): Method parse/execution failed
> [\_PR_.CPU0._PDC] (Node f7c51b88), AE_NOT_FOUND
> [ 19.459076] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
> [ 19.459278] ACPI: SSDT 7FED09A4, 00C8 (r1 PmRef Cpu1Ist 3000 INTL 20061109)
> [ 19.459465] ACPI: SSDT 7FED06E7, 0085 (r1 PmRef Cpu1Cst 3000 INTL 20061109)
> [ 19.459641] ACPI Error (psargs-0355): [\_PR_.CPU0._PPC] Namespace
> lookup failure, AE_NOT_FOUND
> [ 19.459645] ACPI Error (psparse-0537): Method parse/execution failed
> [\_PR_.CPU1._PPC] (Node f7ccf180), AE_NOT_FOUND
> [ 19.459895] ACPI Error (psargs-0355): [\_PR_.CPU0._CST] Namespace
> lookup failure, AE_NOT_FOUND
> [ 19.459899] ACPI Error (psparse-0537): Method parse/execution failed
> [\_PR_.CPU1._CST] (Node f7ccf1f8), AE_NOT_FOUND
> [ 19.459979] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
> --------

> I've checked it with 2.6.25 kernel - same errors.
> My main system (ubuntu 8.04):
> 
> $ uname -a
> Linux astar-laptop 2.6.24-16-generic #1 SMP Thu Apr 10 13:23:42 UTC 2008 
> i686 GNU/Linux
> 
> Is there any solutions, except waiting firmware update from laptop vendor?
> 
> Best regards,
> Michael
> 
> 
> --
> To unsubscribe from this list: send the line "unsubscribe linux-acpi" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at  http://vger.kernel.org/majordomo-info.html

Re: ACPI on HP Pavilion dv2765tx, c-states problems

[Michael Sotnikov]

Hi,

Zhao Yakui пишет:
> It seems that there are some errors in ACPI tables.
> Will you please attach the output of acpidump?
> 
> It would be great if you can open a bug at
> http://bugzilla.kernel.org/enter_bug.cgi?product=ACPI
> and attach the acpidump/.config/dmesg/lspci -vxxx as attachments there.

http://bugzilla.kernel.org/show_bug.cgi?id=10513

all stuff is attached.



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