sonido 5.1

[Samuel Betancourt Tom]

Saludos lista

Tengo problemas con el sonido 5.1, pues sale solo como sonido 2.1

Tengo una tarjeta de sonido Sound Blaster 5.1 live modelo 0220 al dar 
lspci -vv reporta:

Les agradezco cualquier orientación sobre que configuración se debe hacer

01:07.1 Input device controller: Creative Labs SB Live! MIDI/Game Port (rev 
0a)
        Subsystem: Creative Labs Gameport Joystick
        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 32
        Region 0: I/O ports at a800 [size=8]
        Capabilities: <access denied>

05:00.0 VGA compatible controller: nVidia Corporation Unknown device 0160 (rev 
a1) (prog-if 00 [VGA])
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- 
Stepping- SERR- FastB2B-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- 
<TAbort- <MAbort- >SERR- <PERR-
        Latency: 0
        Interrupt: pin A routed to IRQ 5
        Region 0: Memory at fa000000 (32-bit, non-prefetchable) [size=16M]
        Region 1: Memory at d0000000 (64-bit, prefetchable) [size=256M]
        Region 3: Memory at fb000000 (64-bit, non-prefetchable) [size=16M]
        [virtual] Expansion ROM at fc000000 [disabled] [size=128K]
        Capabilities: <access denied>

Gracias anticipadas por su colaboración