Gstreamer master - Could not open audio device for playback

[Yong Xin]

Hi gstreamer team,

I've just built the source from gstreamer master on Ubuntu 20.04 and want
to run a simple test to verify the build. The pipeline "gst-launch-1.0
videotestsrc ! autovideosink" to play the sample video is working fine. But
the pipeline to play the sample audio is not working

[gst-master] convedia at Ubuntu1:~/gst-build$ gst-launch-1.0 audiotestsrc !
autoaudiosink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...



*WARNING: from element
/GstPipeline:pipeline0/GstAutoAudioSink:autoaudiosink0: Could not open
audio device for playback.Additional debug
info:../subprojects/gst-plugins-good/sys/oss4/oss4-sink.c(513):
gst_oss4_sink_open (): /GstOss4Sink:autoaudiosink0-actual-sink-oss4:system
error: No such file or directory*
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock

If I exit from the development environment and run the same pipeline on the
host (which have official gstreamer 1.16.2 release installed), it works
fine. Can anyone help?

Thanks,
Yong
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