[pulseaudio-discuss] [RFC PATCH 3/4] alsa-card: Switch profile when the active one becomes unavailable

[Tanu Kaskinen]

On Tue, 2018-08-07 at 22:00 -0700, João Paulo Rechi Vita wrote:
> When the active profile of a card becomes unavailable and no other
> module changes it to a better profile (i.e. there are no available ports
> that module-switch-on-port-available could switch to) the card will be
> stuck on an unavailable profile with a non-working sink/source and any
> active streams connected to that sink/source will remain connected.
> 
> This commit switches to a different profile when the active profile
> becomes unavailble, looking for a profile with availability yes or
> unknown with the highest priority, and ultimately fall-backing to the
> OFF profile.
> 
> With this fix a card that only has one port can have the streams
> connected to its sink/source moved away by module-rescue-stream when
> that port becomes unavailable. This has been seen on machines with AMD
> graphics, where the HDMI port lives on a separate ALSA card that only
> has that port.

Sounds good, but have you checked that the profile gets restored back
to something else than off once you plug the device back in? At least
at some point this was an issue, and I think it hasn't been fixed. If
this is still an issue, module-switch-on-port-available needs to be
fixed first to do the profile switch away from off when something gets
plugged in.

-- 
Tanu

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