[Bug 692953] alsa modules are silent or noisy after several hours of use

Tue Sep 10 09:24:29 PDT 2013

https://bugzilla.gnome.org/show_bug.cgi?id=692953
  GStreamer | gst-plugins-base | 1.0.9

--- Comment #127 from Thomas DEBESSE <thomas.debesse at rcf.fr> 2013-09-10 16:24:04 UTC ---
This pipeline:

gst-launch-1.0 -v jackaudiosrc name=sink client-name=julia connect=none !
capsfilter caps="audio/x-raw, format=F32LE, rate=48000, channels=1" !
audioconvert ! audioresample ! capsfilter caps="audio/x-raw, format=S32LE,
rate=48000, channels=2" ! alsasink device=hw:Juli sync=true

Prints logs like that:

16:11:48.480893109  6273  0x833ecf0 WARN           audiobasesink
gstaudiobasesink.c:1273:gst_audio_base_sink_skew_slaving:<alsasink0> correct
clock skew 2550623562 > 20000000
16:11:48.502229196  6273  0x833ecf0 WARN           audiobasesink
gstaudiobasesink.c:1273:gst_audio_base_sink_skew_slaving:<alsasink0> correct
clock skew 2550624909 > 20000000
16:11:48.523561613  6273  0x833ecf0 WARN           audiobasesink
gstaudiobasesink.c:1273:gst_audio_base_sink_skew_slaving:<alsasink0> correct
clock skew 2550626213 > 20000000
16:11:48.544898602  6273  0x833ecf0 WARN           audiobasesink
gstaudiobasesink.c:1273:gst_audio_base_sink_skew_slaving:<alsasink0> correct
clock skew 2550627477 > 20000000

It occurs dozens of times per second.

The pipeline is silent.

--------------

This pipeline:

gst-launch-1.0 -v alsasrc device=hw:XFi ! capsfilter caps="audio/x-raw,
format=S16LE, rate=48000, channels=2" ! audioconvert ! audioresample !
capsfilter caps="audio/x-raw, format=F32LE, rate=48000, channels=2" !
jackaudiosink name=src client-name=xfi connect=none sync=true

Prints logs like that:

16:10:31.350295130  6266  0x821acf0 WARN           audiobasesink
gstaudiobasesink.c:1273:gst_audio_base_sink_skew_slaving:<src> correct clock
skew 20190099 > 20000000
16:10:31.370219568  6266  0x821acf0 WARN           audiobasesink
gstaudiobasesink.c:1295:gst_audio_base_sink_skew_slaving:<src> correct clock
skew -20159812 < -20000000
16:10:31.500289722  6266  0x821acf0 WARN           audiobasesink
gstaudiobasesink.c:1273:gst_audio_base_sink_skew_slaving:<src> correct clock
skew 20008864 > 20000000
16:10:31.510157289  6266  0x821acf0 WARN           audiobasesink
gstaudiobasesink.c:1295:gst_audio_base_sink_skew_slaving:<src> correct clock
skew -20022663 < -20000000

It seems not predictable, it happens from time to time.

The pipeline is running nicely, recording sound without distortion.
This pipeline is running since more than 22 hours.

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