Hello,
I'm not entirely sure about if pulseaudio is the culprit here, but I'm out of
ideas and need some advise.
Connecting _the_same_usb _sound_card_ to my laptop or to the raspberry makes
pulseaudio detect different rate capabilities. Unfortunatelly the raspberry
detects the wrong rate (480
, mailing lists wrote:
Subject: pulseaudio (V5) incorrect rate detection on usb sound card with
raspberry
To: pulseaudio-discuss@lists.freedesktop.org
Date: Wednesday, October 22, 2014, 1:23 PM
Hello,
I'm not entirely sure about if pulseaudio is the culprit
here, but I'm out of
> I had to put something like
>
> pcm.!default {
> type hw
> card 0
> }
>
> in my /etc/asound.conf in order to get a default rate of 44100.
>
> Laurentiu
it doesn't make any difference, the core problem is that pulseaudio detects
diferent capabilities on diferent architectures
>Your usb audio seem support mono, stereo, 8 bits and 16 bits
>
>and some endpoint support 8000,11025,16000,22025Hz
>
>Seem like driver bug if you can only use 32000 44100 and 48000Hz
The 8000, 11025, 16000 and 22050 values are capture samplerates (see below
/proc/asound/card1/stream0 output), fo
Hello Tanu,
> I'm not sure if you mentioned this already before (sorry for not
> bothering to check), but is the PA version the same between the
> machines? If not, then something may have been fixed in PA, but in any
> case it seems more likely to me that there was some change in the kernel
> dri
Alexander, thank you very much for the detailed explanation.
> The theory is very simple. It probes at startup whether the configured
> sample rate and the alternate sample rate (both can be seen in
> /etc/pulse/daemon.conf) are supported. If none is supported, PulseAudio
> picks a somewhat-ra
> Upon reading your log further, I have a better guess. It looks like your
> sound card supports only 48 kHz for capture, and, while capture is
> active, also requires playback to be open at 48 kHz.
>
> You can work around this limitation by setting the card profile to
> "output:analog-stereo"
>Sorry for the spam, but you have a very serious smoking gun in your log:
I like this type of (instructive) spam ;-)
> D: [pulseaudio] alsa-util.c: Plug PCM: Direct Stream Mixing PCM
>
> PulseAudio must not be running on top of dmix. dmix is the thing that,
> by default, uses 48 kHz and does n
> To debug the issue, I need the output of these two commands:
>
> aplay -vv -d 1 -f cd -D hw:0 /dev/zero
>
> aplay -vv -d 1 -f cd -D front:0 /dev/zero
I'm sorry, here they are:
root@rpi:~# aplay -vv -d 1 -f cd -D hw:0 /dev/zero
Playing raw data '/dev/zero' : Signed 16 bit Little Endian, Rate 4
> And this is wrong. However, the strace from the previous email did not
> find any custom ALSA configuration files that could affect the outcome.
> Thus, I conclude that you, or maybe some stupid script that you ran,
> modified some file in /usr/share/alsa in a bad way in the past. Please
> r
> And this is wrong. However, the strace from the previous email did not
> find any custom ALSA configuration files that could affect the outcome.
> Thus, I conclude that you, or maybe some stupid script that you ran,
> modified some file in /usr/share/alsa in a bad way in the past. Please
> r
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