[alsa-devel] Best (non zero) CONFIG_SND_HDA_POWER_SAVE_DEFAULT value ?

[Takashi Iwai]

On Mon, 11 Dec 2017 11:37:04 +0100,
Hans de Goede wrote:
> 
> Hi All,
> 
> Recently I've changed the value for CONFIG_SND_HDA_POWER_SAVE_DEFAULT for Fedora
> from 0 to 1. Someone pointed me to:
> https://www.kernel.org/doc/html/latest/sound/designs/powersave.html
> 
> Which advises 10 seconds, but that seems quite long IMHO, also for Fedora
> I would expect all users to go through pulseaudio and AFAIK pulseaudio itself
> already has a timeout where it keeps the device open for a while when idle?
> 
> So any advise on to what would be the best non zero value for
> CONFIG_SND_HDA_POWER_SAVE_DEFAULT ?

Heh, it's only a question of how patient you are :)

1 should be fine for modern machines, I suppose, especially when PA is
deployed.  The longer timeout is useful for the case without PA where
you might open/close really frequently.


Takashi