Execute o comando (como root):
# lspci -v
Isso listará todos os dispositivos PCI no seu sistema. Um deles será a placa de som:
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01)
Subsystem: Dell Device 01d2
Flags: bus master, fast devsel, latency 0, IRQ 43
Memory at efffc000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [130] Root Complex Link
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
Depois, você pode procurar aqui para ver se está na lista de hardware suportada.