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CMUS Error: can't change volume: mixer is not open

Hello Daniel, I have used HiFiBerry DAC module in Raspberry PI2 with CMUS and ALSAMIXER, all works fine.

But when I tried to use the sounds card on PI3 new model (Raspbian OS) the PCM in ALSAMIXER doesn't appear and I can not change the volume level in CMUS music player.

The audio is present. I noticed that if I set true the soft volume (in CMUS) I can change the volume level. The delay is too long and I wouldn't use this solution.

I have three sounds card all with same problem with PI3, on contrary with PI2 work fine.

Thank for your support

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