Could you please run
GST_NO_COLOR=1 GST_DEBUG=3 gst-launch -v alsasrc ! alsasink &> gst-launch.log
and attach the gst-launch.log file that is created?
** Changed in: gstreamer0.10 (Ubuntu)
Assignee: (unassigned) => Sebastian Dröge
Status: Unconfirmed => Needs Info
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gstreamer alsasrc problem
https://launchpad.net/bugs/42998