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

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On Wed, Nov 21, 2018 at 11:44 AM João Paulo Rechi Vita
<jprvita@xxxxxxxxx> wrote:
>
> On Tue, Oct 9, 2018 at 2:23 AM Tanu Kaskinen <tanuk@xxxxxx> wrote:
> >
> > 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.
> >
>
> Yes, once something is plugged again on the card its profile is
> updated to reflect the new port availability.
>
> I'm going to re-send this as a MR for inclusion.
>

Now on https://gitlab.freedesktop.org/pulseaudio/pulseaudio/merge_requests/34,
in case anyone else is interested.

--
João Paulo Rechi Vita
http://about.me/jprvita
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