https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1302090
follow his step
the multi channel speakers must have same def assosication and ascending sequence number
HP Mic need to use 0xc sequence number and parser_flags=4
https:/ /bugs.launchpad .net/ubuntu/ +source/ alsa-driver/ +bug/1302090
follow his step
the multi channel speakers must have same def assosication and ascending sequence number
HP Mic need to use 0xc sequence number and parser_flags=4