ACPI on HP Pavilion dv2765tx, c-states problems

DISCUSSION Michael Sotnikov 3 participants 7 messages Apr 23, 2008 – Apr 24, 2008 ACPI

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Michael Sotnikov

author

2008-04-23 15:15 UTC #0 lore raw

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

Michael Sotnikov

author

2008-04-23 15:57 UTC #1 lore raw

"p4_cpuclock" means p4-clockmod.

Sorry.

Alexey Starikovskiy

2008-04-23 17:55 UTC #2 lore raw

Quoted 1 line · Michael Sotnikov

"p4_cpuclock" means p4-clockmod.

Don't use it. It does not save you any power, just makes your system slower.

Regards,
Alex.

Quoted 7 lines

Sorry.

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Alexey Starikovskiy

2008-04-23 18:00 UTC #3 lore raw

In reply to Michael Sotnikov

Quoted 10 lines · 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).

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.

Quoted 41 lines

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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Zhao Yakui

2008-04-24 00:48 UTC #5 lore raw

In reply to Michael Sotnikov

Quoted 10 lines · 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).

Quoted 8 lines

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,

Quoted 35 lines

[ 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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Michael Sotnikov

author

2008-04-24 02:02 UTC #6 lore raw

Hi,

Zhao Yakui пишет:

Quoted 6 lines

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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Michael Sotnikov

author

2008-04-24 02:12 UTC #4 lore raw

In reply to Alexey Starikovskiy

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

Alexey Starikovskiy:

Quoted 1 line

Please check if your BIOS has EST enabled.

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

Quoted 1 line

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

Signature · 2 lines

Best Regards,
Michael