I changed the alsa-base.conf to 3stack to use a USB speaker system (actually a Thompson/RCA lyra wireless transmitter), which worked fine.

Now I Moved the Lyra USB devise to an XP machine (long story, but to transmit audio and video of MLB TV to TVs around the house) and need to change back alsa-base.conf, I think, to get back to using the original, internal sound card.

@zareason:/etc/modprobe.d$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 3: NVIDIA HDMI [NVIDIA HDMI]
Subdevices: 0/1
Subdevice #0: subdevice #0

I did not backup als-base.conf or comment out the original line which now reads:

options snd-hda-intel probe_mask=8 model=3stack


Anyone know what I should replace "3stack" with? I do not see my card in the database. Also, what are the steps once you;ve successfully edited alsa-base.conf to get sound?

Alsamixer just shows the card info and IEC958, the screen is blank where one might expect to see volume bars. More output from terminal:

lspci -v
00:00.0 Host bridge: nVidia Corporation MCP79 Host Bridge (rev b1)
Subsystem: nVidia Corporation Device cb79
Flags: bus master, 66MHz, fast devsel, latency 0

00:00.1 RAM memory: nVidia Corporation MCP79 Memory Controller (rev b1)
Subsystem: nVidia Corporation Device cb79
Flags: bus master, 66MHz, fast devsel, latency 0

00:03.0 ISA bridge: nVidia Corporation MCP79 LPC Bridge (rev b2)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: bus master, 66MHz, fast devsel, latency 0
I/O ports at 4f00 [size=256]

00:03.1 RAM memory: nVidia Corporation MCP79 Memory Controller (rev b1)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: 66MHz, fast devsel

00:03.2 SMBus: nVidia Corporation MCP79 SMBus (rev b1)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: 66MHz, fast devsel, IRQ 11
I/O ports at 4900 [size=64]
I/O ports at 4d00 [size=64]
I/O ports at 4e00 [size=64]
Capabilities: <access denied>
Kernel driver in use: nForce2_smbus
Kernel modules: i2c-nforce2

00:03.3 RAM memory: nVidia Corporation MCP79 Memory Controller (rev b1)
Subsystem: nVidia Corporation Device cb79
Flags: 66MHz, fast devsel

00:03.5 Co-processor: nVidia Corporation MCP79 Co-processor (rev b1)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 9
Memory at fae80000 (32-bit, non-prefetchable) [size=512K]

00:04.0 USB Controller: nVidia Corporation MCP79 OHCI USB 1.1 Controller (rev b1) (prog-if 10)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
Memory at fae7f000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: ohci_hcd

00:04.1 USB Controller: nVidia Corporation MCP79 EHCI USB 2.0 Controller (rev b1) (prog-if 20)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
Memory at fae7ec00 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:06.0 USB Controller: nVidia Corporation MCP79 OHCI USB 1.1 Controller (rev b1) (prog-if 10)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22
Memory at fae7d000 (32-bit, non-prefetchable) [size=4K]
Capabilities: <access denied>
Kernel driver in use: ohci_hcd

00:06.1 USB Controller: nVidia Corporation MCP79 EHCI USB 2.0 Controller (rev b1) (prog-if 20)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 20
Memory at fae7e800 (32-bit, non-prefetchable) [size=256]
Capabilities: <access denied>
Kernel driver in use: ehci_hcd

00:08.0 Audio device: nVidia Corporation MCP79 High Definition Audio (rev b1)
Subsystem: PC Partner Limited Device 437b
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 23
Memory at fae78000 (32-bit, non-prefetchable) [size=16K]
Capabilities: <access denied>
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel

00:09.0 PCI bridge: nVidia Corporation MCP79 PCI Bridge (rev b1) (prog-if 01)
Flags: bus master, 66MHz, fast devsel, latency 0
Bus: primary=00, secondary=01, subordinate=01, sec-latency=32
Capabilities: <access denied>

00:0a.0 Ethernet controller: nVidia Corporation MCP79 Ethernet (rev b1)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
Memory at fae7c000 (32-bit, non-prefetchable) [size=4K]
I/O ports at d080 [size=8]
Memory at fae7e400 (32-bit, non-prefetchable) [size=256]
Memory at fae7e000 (32-bit, non-prefetchable) [size=16]
Capabilities: <access denied>
Kernel driver in use: forcedeth
Kernel modules: forcedeth

00:0b.0 SATA controller: nVidia Corporation MCP79 AHCI Controller (rev b1) (prog-if 01)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 29
I/O ports at d000 [size=8]
I/O ports at cc00 [size=4]
I/O ports at c880 [size=8]
I/O ports at c800 [size=4]
I/O ports at c480 [size=16]
Memory at fae76000 (32-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: ahci

00:0c.0 PCI bridge: nVidia Corporation MCP79 PCI Express Bridge (rev b1)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
Kernel modules: shpchp

00:10.0 PCI bridge: nVidia Corporation MCP79 PCI Express Bridge (rev b1)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
I/O behind bridge: 0000e000-0000efff
Memory behind bridge: faf00000-fbffffff
Prefetchable memory behind bridge: 00000000e0000000-00000000f9ffffff
Capabilities: <access denied>
Kernel modules: shpchp

00:15.0 PCI bridge: nVidia Corporation MCP79 PCI Express Bridge (rev b1)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
Kernel modules: shpchp

00:16.0 PCI bridge: nVidia Corporation MCP79 PCI Express Bridge (rev b1)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=05, subordinate=05, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
Kernel modules: shpchp

00:17.0 PCI bridge: nVidia Corporation MCP79 PCI Express Bridge (rev b1)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=06, subordinate=06, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
Kernel modules: shpchp

00:18.0 PCI bridge: nVidia Corporation MCP79 PCI Express Bridge (rev b1)
Flags: bus master, fast devsel, latency 0
Bus: primary=00, secondary=07, subordinate=07, sec-latency=0
Capabilities: <access denied>
Kernel driver in use: pcieport-driver
Kernel modules: shpchp

03:00.0 VGA compatible controller: nVidia Corporation ION VGA (rev b1)
Subsystem: ZOTAC International (MCO) Ltd. Device a108
Flags: bus master, fast devsel, latency 0, IRQ 20
Memory at fb000000 (32-bit, non-prefetchable) [size=16M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
Memory at f8000000 (64-bit, prefetchable) [size=32M]
I/O ports at ec00 [size=128]
[virtual] Expansion ROM at fafe0000 [disabled] [size=128K]
Capabilities: <access denied>
Kernel driver in use: nvidia
Kernel modules: nvidia, nvidiafb