Not working sound on HP 2133

[Alex Keda]

hdac0 at pci0:128:1:0:     class=0x040300 card=0x3030103c chip=0x32881106 
rev=0x10 hdr=0x00
    vendor     = 'VIA Technologies Inc'
    device     = '??? VIA VT8251/8237A High Definition Audio Controller 
- HDA Codec Realtek ALC660'
    class      = multimedia
    subclass   = HDA

all detected, but - no sound =((