snd_hda blues

Bob Johnson fbsdlists at
Mon Jan 4 16:03:08 UTC 2010

It is likely that whomever is able to help you will need additional
information. You can get this information by rebooting your system and
selecting "Boot FreeBSD with verbose logging" from the boot menu.
After it boots, use "grep hdac /var/run/dmesg.boot" to extract the
detailed information about your sound system configuration and post it
back to freebsd-questions.

If I have time I will try to look through the info and come up with a
suggestion, but I must warn you in advance that I am unlikely to find
the time in the next few days, so post the info to the list to give
others a chance to look at it.

- Bob

On 1/4/10, Sandra Kachelmann <s.kachelmann at> wrote:
> I am trying to get my HDA based soundcard work on both output jacks
> (back by the card and on the jack on top of the tower).
> With earlier FreeBSD versions I was able to have my speakers plugged in
> on the back of my soundcard and whenever I would plug in the headphones
> on the top of the tower the speakers would mute and the sound would
> play on the headphones.
> Now this doesn't work anymore. The speakers work but plugging in the
> "top tower jack" won't do anything.
> Looking at man snd_hda I tried all the examples (adding stuff
> to /boot/device.hints). None of the examples did what I wanted.
> By googling a little bit I found a dude who had the same problem so I
> simply copied the device.hints lines that solved his problem.
> The following lines make my headphones work:
> hint.hdac.0.cad0.nid22.config="as=1 seq=15"
> hint.hdac.0.cad0.nid24.config="as=3"
> hint.hdac.0.cad0.nid26.config="as=1"
> hint.hdac.0.cad0.nid29.config="as=2"
> However, after that my speakers are mute, all the time. If anyone could
> help me restoring the old snd_hda behaviour I would be very thankful
> since I don't quite understand what the snd_hda manpage is trying to
> tell me (sorry, I really tried...).
> Here are the information I think might help:
> $ cat /dev/sndstat
> FreeBSD Audio Driver (newpcm: 64bit 2009061500/amd64)
> Installed devices: pcm0: <HDA Realtek ALC883 PCM #0 Analog> at cad 0
> nid 1 on hdac0 kld snd_hda [MPSAFE] (1p:1v/1r:1v channels duplex
> default)
> Any help is gratefully apreciated.
> Sandra
> _______________________________________________
> freebsd-questions at mailing list
> To unsubscribe, send any mail to "freebsd-questions-unsubscribe at"

-- Bob Johnson
   fbsdlists at

More information about the freebsd-questions mailing list