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Date:      Sun, 30 Sep 2018 09:17:19 -0700 (PDT)
From:      "Rodney W. Grimes" <freebsd-rwg@pdx.rh.CN85.dnsmgr.net>
To:        Poul-Henning Kamp <phk@phk.freebsd.dk>
Cc:        current@freebsd.org
Subject:   Re: devmatch sideeffec: No sound
Message-ID:  <201809301617.w8UGHJZH087731@pdx.rh.CN85.dnsmgr.net>
In-Reply-To: <1121.1538293898@critter.freebsd.dk>

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> HW: Thinkpad T480 with T3 Dock.
> 
> SW: -current, r338952
> 
> With devmatch enabled in /etc/rc.conf (the default0, snd_uaudio
> gets loaded automatically and finds the audio stuff in the dock,
> which is connected to a screen output(s) I do not use.
> 
> Firefox ends up with /dev/dsp2.0 which goes there, and as a result
> I get no sound through the laptops speakers where I expect it.
> 
> Obvious workaround: Disable devmatch.

I have just the opposite issue on my x230,
as I use external speakers plugged into the audio jack,
and to get them on I have to do a:

sysctl hw.snd.default_unit=1

Or it may need to be:
sysctl hw.snd.default_unit=0

> Yet to be discovered workaround:  Prioritize sound devices, when
> there are multiple.
> 
> This kind of thing may cause some support-work when 12 comes out...
> 

-- 
Rod Grimes                                                 rgrimes@freebsd.org



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