[pulseaudio-discuss] 'Failed to find a working profile' for firewire sound devices
o-takashi at sakamocchi.jp
Wed Jan 15 06:54:21 PST 2014
I tried your idea with my devices:
1. $ LANG=C pulseaudio -vvvv --log-time=1 > ~/pulseverbose.log 2>&1
2. plug-in devices (repeat)
3. $ aplay/arecord -L
All of my devices are detected automatically.
$ cat /proc/asound/cards
0 [F410 ]: BeBoB - FW 410
M-AUDIO FW 410 (id:2, rev:1), GUID
000d6c01000af510 at fw1.0, S400
1 [Solo ]: BeBoB - FW Solo
M-Audio FW Solo (id:144, rev:0), GUID
000d6c0b00c256a4 at fw2.0, S400
2 [Audiophile ]: BeBoB - FW Audiophile
M-Audio FW Audiophile (id:13, rev:1), GUID
000d6c03002b7e2e at fw3.0, S400
3 [GO46 ]: BeBoB - GO46
YAMAHA GO46 (id:12, rev:1), GUID 00a0de00000283e7
at fw4.0, S400
4 [AudioFirePre8 ]: Fireworks - AudioFirePre8
Echo Digital Audio AudioFirePre8 v5.8, GUID
0014860a5b6bdb9b at fw5.0, S400
5 [AudioFire4 ]: Fireworks - AudioFire4
Echo Digital Audio AudioFire4 v5.5, GUID
0014860f5a616e83 at fw6.0, S400
6 [FCA202 ]: OXFW - FCA202
Behringer FCA202 (OXFW970 0104), GUID
00156402009a70d8 at fw7.0, S400
When I playback with 2ch application, then the samples are going to
every available channels.
And I mind that PulseAudio tries the same times as the number of
settings in multichannels.conf. Each trial call snd_pcm_prepare() in the
end of snd_pcm_hw_params().
This is a bit problem for the devices because the drivers start stream
when snd_pcm_prepare() is called.
There are some devices which are not designed to start/stop streams so
frequently. If possible, I want to reduce the time to start/stop stream.
There are some devices which need much time to start stream (300-600
msec). So with such device, PulseAudio need much time to finish its
In theory, I must hide these quirks against user-land. But considering
user-land driver (FFADO), I cannot make the drivers to keep streams
> ...but we might want a better match than just "firewire" in order not to
> catch the firewire speakers (if they have normal alsa mixers instead of
> hwdep control).
Firewire speakers are just three models.
(Vendor ID/Model ID)
So we can write udev rules for them to distinguish from the others.
Please refer to '60-ffado.rules'.
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