What sound card physically installed:
# lspci -v | grep -A7 -i "audio"
00:06.1 Audio device: NVIDIA Corporation MCP55 High Definition Audio (rev a2)
Subsystem: Oracle/SUN Device 534d
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
Memory at d0000000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [44] Power Management version 2
Capabilities: [50] MSI: Enable- Count=1/1 Maskable+ 64bit+
Capabilities: [6c] HyperTransport: MSI Mapping Enable+ Fixed+
Kernel driver in use: snd_hda_intel
To get info on the driver:
# sudo modinfo snd-hda-intel
filename: /lib/modules/3.5.0-23-generic/kernel/sound/pci/hda/snd-hda-intel.ko
description: Intel HDA driver
license: GPL
srcversion: 20002E7359B75B638CAB30D
alias: pci:v00001022d*sv*sd*bc04sc03i00*
alias: pci:v00001002d*sv*sd*bc04sc03i00*
