Hi there! Well, I guessed it was a typo but you know, with software u barely know, one is a little bit more careful (: Ok, I tested the activated() routine, it works quite well for deactivating, those controls aren't available in mixer user apps as well as deactivating a control which is necessary for sound output like "Left Mixer Playback Switch" (on WM8750) mutes the device (: However, I tried the following: - deactivate control - activate same control (right after deactivating) with the effect that the control wasn't accessible via mixer nor did the related path seem to work Greez, Harry _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel