Realtek ALC268 HDA sound will not accept input but the dmesg looks like it should.

[eculp]

This laptop is running an up to date amd64 Current.
pciconf -lv shows:

pcm0 at pci0:0:7:0:        class=0x040300 card=0x01261025 chip=0x055c10de  
rev=0xa1 hdr=0x00
     vendor     = 'Nvidia Corp'
     class      = multimedia

The verbose dmesg mentioned in the subject can be seen at  
http://encontacto.net/share/dmesg.txt

Any suggestions appreciated.

Thanks,

ed