Hallo,
I use a mini2440 with 128 mb ram and the actual pengutronix bsp with kernel 3.7.7-ptx-master. To the ptxconfig.qt I add an apache2 webserver and an openssh server. The rest is the standard configuration. If I try to play or record audio with alsa (aplay/arecord) the result is scrambled. There is a continuous clicking noise with an interval of approximate 500ms . Between the clicking noise the audio is ok.

What I do is the following:
- alsamixer -> set input mux to both, higher mic & mic sensitivity controller
 - arecord -f S16_LE -r 8000 -c 1 test.wav

If I play the recorded file on my pc I have that clicking noise (I can upload an example - it has app. 80kB but I'm not sure if this is allowed).

top ( and also the qt test app) means, that arecord uses app. 3.5% mem and 2.0 % cpu.

Does anyone have an idea what the problem is?

Regards,
Thomas

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