This appears to be caused by some common element of xfce4-volumed and xfce4-mixer. In the same scenario as comment #3, I start xfce4-mixer from the command line instead of xfce4-volumed and the same behavior occurs: Master and PCM are both muted.
I don't have any more information at this time. I just wanted to register that the problem is not specific to xfce4-volumed. I will investigate further when I have the opportunity.
This appears to be caused by some common element of xfce4-volumed and xfce4-mixer. In the same scenario as comment #3, I start xfce4-mixer from the command line instead of xfce4-volumed and the same behavior occurs: Master and PCM are both muted.
I don't have any more information at this time. I just wanted to register that the problem is not specific to xfce4-volumed. I will investigate further when I have the opportunity.