Re: [Mactel-linux-devel] C4 state - Status report

[Nicolas B. <ni...@bo...>]

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Hi,

(switched to mactel-devel list, more appropriate I think)

Sven Anders wrote:
> Hello!
> 
> Some data of my machine (for reference):
> 
> # dmidecode | egrep '(Version|Release)'
>         Version:    MBP22.88Z.00A5.B01.0611031551
>         Release Date: 11/03/06
>         Version: 1.0
>         Version: PVT
>         Version: Mac-F42187C8
>         Version: Intel(R) Core(TM)2 CPU
>         Version: Intel(R) Core(TM)2 CPU
> 
> 
> This is what I found out:
> -------------------------

Wow, impressive report, that's really unfortunate and frustrating it
doesn't really helps us to improve power management on Linux...

> The following hopes I have:
> 
>  1) The auto USB suspend framework will solve the too-many interrupts problems.

Have you tried this kernel option?
CONFIG_USB_SUSPEND: USB selective suspend/resume and wakeup (EXPERIMENTAL)

Looks interesting... You might be able to disable some devices and see
if it improves power consumption...

>  2) The dyn-ticks patches will allow the processor to sleep longer.

At least in the current version, it doesn't help at all unfortunately.

Best regards,

Nicolas
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