[gentoo-user] Do I need PM_AUTOSLEEP?

[Mick]

I am configuring the 3.5.7 kernel and it brought this up:
========================================================
CONFIG_PM_AUTOSLEEP:

Allow the kernel to trigger a system transition into a global sleep
state automatically whenever there are no active wakeup sources.

Symbol: PM_AUTOSLEEP [=n]
Type : boolean
Prompt: Opportunistic sleep
Defined at kernel/power/Kconfig:106
Depends on: PM_SLEEP [=y]
Location:
-> Power management and ACPI options
========================================================

but I am not sure what the impact of it will be. In particular, I would like
to avoid sluggishness in the off chance the laptop is thinking that it should
start placing devices into sleep, when I am still using the machine. I recall
some laptop option/service causing mplayer stopping and restarting when
running on battery in the past, so I am keen to avoid something similar.

Have you any experience of how this behaves?
--
Regards,
Mick

[Florian Philipp]

That's meant for smartphone-like devices. It's an alternative to
Android's suspend system. https://lwn.net/Articles/479841/

Regards,
Florian Philipp

[Mick]

Thanks Florian, perhaps that's why all I found searching was about android ...

--
Regards,
Mick