Re: [Mactel-linux-devel] C4 state problem

[Sven A. <an...@an...>]

Ludovic Rousseau schrieb:

>> active state:            C3
>> max_cstate:              C8
>> bus master activity:     00000000
>> maximum allowed latency: 8000 usec
>> states:
>>     C1:                  type[C1] promotion[C2] demotion[--] latency[001]
>> usage[00002590] duration[00000000000000000000]
>>     C2:                  type[C2] promotion[C3] demotion[C1] latency[001]
>> usage[00002086] duration[00000000000006795863]
>>    *C3:                  type[C3] promotion[--] demotion[C2] latency[055]
>> usage[00003633] duration[00000000000009200376]
> 
> I don't know if it is of any interest but I have a different result:
> 
> $ cat /proc/acpi/processor/CPU0/power
> active state:            C2
> max_cstate:              C8
> bus master activity:     00000000
> states:
>     C1:                  type[C1] promotion[C2] demotion[--]
> latency[000] usage[00000010] duration[00000000000000000000]
>    *C2:                  type[C2] promotion[--] demotion[C1]
> latency[001] usage[01409563] duration[00000000005313483434]
> 
> I have a MacBook Pro with Core1Duo and using the Debian Etch
> 2.6.18-4-686 kernel (no additional patch)

Do you experiencing short battery-time and loud fans?
What does your dmesg output show?

Mine is as follows:

[    1.673189] ACPI (exconfig-0455): Dynamic SSDT Load - OemId [APPLE ] OemTable
Id [ Cpu0Ist] [20060707]
[    1.673606] ACPI (exconfig-0455): Dynamic SSDT Load - OemId [APPLE ] OemTable
Id [ Cpu0Cst] [20060707]
[    1.674063] Monitor-Mwait will be used to enter C-1 state
[    1.674065] Monitor-Mwait will be used to enter C-2 state
[    1.674066] Monitor-Mwait will be used to enter C-3 state
[    1.674071] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
[    1.674512] ACPI: Processor [CPU0] (supports 8 throttling states)
[    1.675097] ACPI (exconfig-0455): Dynamic SSDT Load - OemId [APPLE ] OemTable
Id [ Cpu1Ist] [20060707]
[    1.675496] ACPI (exconfig-0455): Dynamic SSDT Load - OemId [APPLE ] OemTable
Id [ Cpu1Cst] [20060707]
[    1.675985] ACPI: CPU1 (power states: C1[C1] C2[C2] C3[C3])
[    1.676434] ACPI: Processor [CPU1] (supports 8 throttling states)

Regards
 Sven

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