Sound device keeps reverting from hdmi2 to stereo

[Richard Shaw]

I have a F23 system which I use as a HTPC and occasionally the audio
reverts from hdmi2 in the devices to the on-board stereo sound card.

I'm not sure what keywords to use to see if this has been reported in
bugzilla but I wasn't able to find anything I thought relevant.

Anyone have any ideas?

Thanks,
Richard

[stan]

On Wed, 22 Jun 2016 14:28:00 -0500
Richard Shaw  wrote:
> I have a F23 system which I use as a HTPC and occasionally the audio
> reverts from hdmi2 in the devices to the on-board stereo sound card.
> Anyone have any ideas?

The kernel loads drivers in parallel, so sometimes the order of audio
devices is different because of different load order.  You can put a
file in /etc/modprobe.d specifying the position of the devices, and this
shouldn't happen any more.

A sample of what I use in a file called soundcard.conf.

options snd cards_limit=8
options slots=snd-hda-intel,snd-ice1724,snd-ca0106,snd-hda-intel
alias snd-card-0 snd-hda-intel id="SB"
options snd-hda-intel index=0
alias snd-card-1 snd-ca0106 id="CA0106"
options snd-ca0106 index=1
alias snd-card-2 snd-ice1724 id="Revolution51"
options snd-ice1724 index=2
#alias snd-card-3 snd-cmipci
#options snd_cmipci index=3
alias snd-card-3 snd-hda-intel id="HDMI"
options snd-hda-intel index=3
alias snd-card-7 snd-usb-audio
options snd-usb-audio index=7

You'll probably have to tweak it, a search should find something closer
to your setup.

[Richard Shaw]

On Wed, Jun 22, 2016 at 7:21 PM, stan  wrote:
> On Wed, 22 Jun 2016 14:28:00 -0500
> Richard Shaw  wrote:
> > I have a F23 system which I use as a HTPC and occasionally the audio
> > reverts from hdmi2 in the devices to the on-board stereo sound card.
> > Anyone have any ideas?
>
> The kernel loads drivers in parallel, so sometimes the order of audio
> devices is different because of different load order.  You can put a
> file in /etc/modprobe.d specifying the position of the devices, and this
> shouldn't happen any more.

I may have a look into this when I have time but I haven't noticed that
this issue occurs during reboots but mythtv uses the sound device directly
while chrome utilizes pulseaudio. Either way though, it should remember the
setting between reboots. The only thing I can think of is that at some
point it's choosing the device before the hdmi audio device is ready and
reverting to the builtin audio but that's purely conjecture on my part.

Thanks,
Richard

[Samuel Sieb]

On 06/22/2016 07:41 PM, Richard Shaw wrote:
> I may have a look into this when I have time but I haven't noticed that
> this issue occurs during reboots but mythtv uses the sound device
> directly while chrome utilizes pulseaudio. Either way though, it should
> remember the setting between reboots. The only thing I can think of is
> that at some point it's choosing the device before the hdmi audio device
> is ready and reverting to the builtin audio but that's purely conjecture
> on my part.

If you won't have any use for the builtin audio, then try blacklisting 
the module for it.