I guess it's snd-hda-intel - here is it's message when it loads: HDA Intel 0000:00:1b.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19 This is what oss says about the chip: 1: oss_hdaudio0 Intel HD Audio interrupts=55013 (55013) HD Audio controller Intel HD Audio Vendor ID 0x808627d8 Subvendor ID 0x10438249 Codec 0: ALC883 (0x10ec0883/0x1043c603) Thanks Michal