Comment 15 for bug 17770

I have attached two test cases. The problem only happens when the dmix plugin is
used in $HOME/.asoundrc.

Here is what I have:

pcm.mymix {
        type dmix
        ipc_key 1024
        slave {
                pcm "hw:0,0"
                period_time 0
                period_size 1024
                buffer_size 4096
                rate 48000
        }
}
pcm.!default {
        type plug
        slave.pcm "mymix"
}
pcm.dsp {
        type plug
        slave.pcm "mymix"
}
ctl.mixer0 {
    type hw
    card 0
}