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73416ba
(Get the code!)
Paulo:
I have no idea whether it saves any power or how much - I'll have to sit down and measure it. There might also be side effects but I haven't seen its effect on shutdown mentioned elsewhere.
Adam:
Are you sure? I have an EeePC 900 too and see the same results as Paulo. Remember it's not enough to "just" enable powersaving - you also have to set a timeout in seconds too. Since I have the ability to use modules compiled out of my kernel I can be sure snd_hda_intel is not being unloaded at any point and my machine powers off : )
On a related note my EeePC hits the C3 state for up to 100 ms (but then I'm using this timeout setting in sysfs/Kconfig for snd_hda). However according to my power meter this does not save me a watt of power (its resolution is only to a watt though so if it's saving 0.5W I wouldn't notice).