No sound from snd_hda
franks at rudbek.com
Mon Dec 22 23:02:29 UTC 2008
On Mon, Dec 22, 2008 at 11:49 AM, Alexander Motin <mav at freebsd.org> wrote:
> Damian Gerow wrote:
>> I've got an Intel HDA device that is sort-of detected, but I get no sound
>> from it:
>> FreeBSD Audio Driver (newpcm: 64bit 2007061600/amd64)
>> Installed devices:
>> pcm0: <HDA Conexant (Unknown) PCM #0 Analog> at cad 0 nid 1 on hdac0 kld
>> snd_hda [MPSAFE] (1p:1v/1r:1v channels duplex default)
>> pcm1: <HDA Conexant (Unknown) PCM #1 Analog> at cad 0 nid 1 on hdac0 kld
>> snd_hda [MPSAFE] (1p:1v/1r:1v channels duplex)
>> The same device looked almost exactly the same on a 7.1-BETA build, but I
>> actually had audio output.
>> I've checked the mixer device, tried muting and unmuting various channels,
>> all to no avail. The audio devices are created, and every program I've
>> tried opens them successfully, but I get no actual sound.
>> I've tried searching around, but I haven't been able to turn anything up.
>> Is there something I'm missing? Something I should be doing that I'm not?
> You are missing new snd_hda man page reading. RTFM. :)
> 1) Read new man page;
> 2) Driver provides you two pcm devices for different purposes, so try to use
> both (as man page recommends);
> 3) If your system has several audio connectors - try all of them, they are
> not equal any more.
> 4) Boot with verbose logs enabled to get much more information about your
> codec and driver operation (as man page recommends);
> 5) Connexant audio codecs are rare, so send your verbose output to me, I
> would like to see it.
> Alexander Motin
> freebsd-current at freebsd.org mailing list
> To unsubscribe, send any mail to "freebsd-current-unsubscribe at freebsd.org"
Should I be asking you about the old snd_hda? I'm having this same
problem and ignoring it for some time (no sound), but on
FreeBSD aire.franks-development.dyndns.biz 6.4-STABLE FreeBSD
6.4-STABLE #9: Sat Dec 13 18:25:36 MST 2008
root at aire.franks-development.dyndns.biz:/usr/obj/usr/src/sys/GENERIC
instead of current. I read the warning:
A few Hardware/OEM vendors tend to screw up BIOS settings, thus rendering
the snd_hda driver useless, which usually results in a state where the
snd_hda driver seems to attach and work, but without any sound.
In the man page, and I suspect that may be my problem. Chipset is
Intel. I played with the bios, but only got it to be worse (snd_hda
not detected at all).
[steve at aire ~]$ cat /dev/sndstat
FreeBSD Audio Driver (newpcm)
pcm0: <Intel 82801G High Definition Audio Controller> at memory
0xfdff8000 irq 16 kld snd_hda [20071129_0050] (1p/1r/1v channels
Is there any further info that would help? I've been limping along on
a usb dongle and it's a bit sad ;)
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