No sound from snd_hda
Damian Gerow
dgerow at afflictions.org
Mon Dec 22 16:46:39 UTC 2008
(I've been meaning to send this in for a while...)
I've got an Intel HDA device that is sort-of detected, but I get no sound
from it:
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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)
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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?
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% ls -lat /dev | head
total 12
30 crw-rw-rw- 1 root wheel - 0, 30 22 Dec 11:33 null
104 crw-rw-rw- 1 root wheel - 0, 104 22 Dec 11:33 dsp0.0
100 crw-rw-rw- 1 root wheel - 0, 100 22 Dec 11:25 midistat
102 crw-rw-rw- 1 root wheel - 0, 102 22 Dec 11:25 mixer0
103 crw-rw-rw- 1 root wheel - 0, 103 22 Dec 11:25 mixer1
99 cr--r--r-- 1 root wheel - 0, 99 22 Dec 11:25 sndstat
6 crw------- 1 root wheel - 0, 6 22 Dec 11:25 console
43 crw------- 1 root tty - 0, 43 22 Dec 01:01 ttyv0
101 dr-xr-xr-x 2 root wheel - 512 22 Dec 00:47 msdosfs
% ls -ld /dev/dsp /dev/mixer
107 crw-rw-rw- 1 root wheel - 0, 107 22 Dec 11:35 /dev/dsp
102 crw-rw-rw- 1 root wheel - 0, 102 22 Dec 11:25 /dev/mixer
%
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(I do find it curious that the dsp and mixer devices exist, but only if I
list them explicitly.)
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% mixer
Mixer vol is currently set to 75:75
Mixer pcm is currently set to 75:75
Mixer speaker is currently set to 75:75
Mixer mic is currently set to 0:0
Mixer rec is currently set to 0:0
Recording source: mic
% mplayer -v test.mp3
MPlayer 1.0rc2-4.2.1 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Core(TM)2 Duo CPU P8600 @ 2.40GHz (Family: 6, Model: 23,
Stepping: 6)
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
<snip>
==> Found audio stream: 0
demux_audio: seeking from 0x14F0F1 to start pos 0x0
demux_audio: audio data 0x0 - 0x14F16E
Audio file file format detected.
==========================================================================
Opening audio decoder: [mp3lib] MPEG layer-2, layer-3
dec_audio: Allocating 4608 + 65536 = 70144 bytes for output buffer.
mp3lib: using SSE optimized decore!
MP3lib: init layer2&3 finished, tables done
MPEG 2.0, Layer III, 22050 Hz 56 kbit Single-Channel, BPF: 183
Channels: 1, copyright: No, original: No, CRC: Yes, emphasis: 0
AUDIO: 22050 Hz, 2 ch, s16le, 56.0 kbit/7.94% (ratio: 7000->88200)
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
==========================================================================
Building audio filter chain for 22050Hz/2ch/s16le -> 0Hz/0ch/??...
[libaf] Adding filter dummy
[dummy] Was reinitialized: 22050Hz/2ch/s16le
[dummy] Was reinitialized: 22050Hz/2ch/s16le
ao2: 22050 Hz 2 chans s16le
audio_setup: using '/dev/dsp' dsp device
audio_setup: using '/dev/mixer' mixer device
audio_setup: using 'pcm' mixer device
audio_setup: sample format: s16le (requested: s16le)
audio_setup: using 2 channels (requested: 2)
audio_setup: using 22050 Hz samplerate (requested: 22050)
audio_setup: frags: 32/32 (1024 bytes/frag) free: 32768
AO: [oss] 22050Hz 2ch s16le (2 bytes per sample)
AO: Description: OSS/ioctl audio output
AO: Author: A'rpi
Building audio filter chain for 22050Hz/2ch/s16le -> 22050Hz/2ch/s16le...
[dummy] Was reinitialized: 22050Hz/2ch/s16le
[dummy] Was reinitialized: 22050Hz/2ch/s16le
Video: no video
Freeing 0 unused video chunks.
Starting playback...
A: 0.8 (00.7) of 196.0 (03:16.0) 0.2%
^C
MPlayer interrupted by signal 2 in module: play_audio
Uninit audio filters...
[libaf] Removing filter dummy
Uninit audio: mp3lib
vo: x11 uninit called but X11 not inited..
%
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