sudo nano /etc/modprobe.d/alsa-base.conf

sudo kate /etc/modprobe.d/alsa-base.conf

gksudo gedit /etc/modprobe.d/alsa-base.conf

    ML (see the section "Links and Addresses").

    power_save and power_save_controller options are for power-saving
    mode.  See powersave.txt for details.

    Note 2: If you get click noises on output, try the module option
            position_fix=1 or 2.  position_fix=1 will use the SD_LPIB
            register value without FIFO size correction as the current
            DMA pointer.  position_fix=2 will make the driver to use
            the position buffer instead of reading SD_LPIB register.
            (Usually SD_LPIB register is more accurate than the
            position buffer.)

    NB: If you get many "azx_get_response timeout" messages at
    loading, it's likely a problem of interrupts (e.g. ACPI irq
    routing).  Try to boot with options like "pci=noacpi".  Also, you
    can try "single_cmd=1" module option.  This will switch the
    communication method between HDA controller and codecs to the
    single immediate commands instead of CORB/RIRB.  Basically, the
    single command mode is provided only for BIOS, and you won't get
    unsolicited events, too.  But, at least, this works independently
    from the irq.  Remember this is a last resort, and should be
    avoided as much as possible...
    
    MORE NOTES ON "azx_get_response timeout" PROBLEMS:
    On some hardwares, you may need to add a proper probe_mask option
    to avoid the "azx_get_response timeout" problem above, instead.
    This occurs when the access to non-existing or non-working codec slot
    (likely a modem one) causes a stall of the communication via HD-audio
    bus.  You can see which codec slots are probed by enabling
    CONFIG_SND_DEBUG_VERBOSE, or simply from the file name of the codec
    proc files.  Then limit the slots to probe by probe_mask option.
    For example, probe_mask=1 means to probe only the first slot, and
    probe_mask=4 means only the third slot.

    The power-management is supported.

  Module snd-hdsp
  ---------------

    Module for RME Hammerfall DSP audio interface(s)

    This module supports multiple cards.

    Note: The firmware data can be automatically loaded via hotplug
          when CONFIG_FW_LOADER is set.  Otherwise, you need to load
          the firmware via hdsploader utility included in alsa-tools
          package.
          The firmware data is found in alsa-firmware package.

:

sudo nano /etc/modprobe.d/alsa-base

DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=12.04
DISTRIB_CODENAME=precise
DISTRIB_DESCRIPTION="Ubuntu 12.04 LTS"

00:00.0 Host bridge: NVIDIA Corporation MCP79 Host Bridge (rev b1)
00:00.1 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1)
00:03.0 ISA bridge: NVIDIA Corporation MCP79 LPC Bridge (rev b3)
00:03.1 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1)
00:03.2 SMBus: NVIDIA Corporation MCP79 SMBus (rev b1)
00:03.3 RAM memory: NVIDIA Corporation MCP79 Memory Controller (rev b1)
00:03.5 Co-processor: NVIDIA Corporation MCP79 Co-processor (rev b1)
00:04.0 USB controller: NVIDIA Corporation MCP79 OHCI USB 1.1 Controller (rev b1)
00:04.1 USB controller: NVIDIA Corporation MCP79 EHCI USB 2.0 Controller (rev b1)
00:06.0 USB controller: NVIDIA Corporation MCP79 OHCI USB 1.1 Controller (rev b1)
00:06.1 USB controller: NVIDIA Corporation MCP79 EHCI USB 2.0 Controller (rev b1)
00:08.0 Audio device: NVIDIA Corporation MCP79 High Definition Audio (rev b1)
00:09.0 PCI bridge: NVIDIA Corporation MCP79 PCI Bridge (rev b1)
00:0b.0 SATA controller: NVIDIA Corporation MCP79 AHCI Controller (rev b1)
00:0c.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1)
00:10.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1)
00:15.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1)
00:16.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1)
00:17.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1)
00:18.0 PCI bridge: NVIDIA Corporation MCP79 PCI Express Bridge (rev b1)
03:00.0 VGA compatible controller: NVIDIA Corporation C79 [GeForce 9100M G] (rev b1)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 03)
07:00.0 Multimedia controller: Philips Semiconductors SAA7231 (rev ca)
08:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvB Wireless LAN Controller (rev 10)

laurent@laurent-MS-7621:~$ lspci | grep [Aa]udio && lsusb | grep [Aa]udio
00:08.0 Audio device: NVIDIA Corporation MCP79 High Definition Audio (rev b1)
laurent@laurent-MS-7621:~$ 

Advanced Linux Sound Architecture Driver Version 1.0.24.

Linux laurent-MS-7621 3.2.0-25-generic-pae #40-Ubuntu SMP Wed May 23 22:11:24 UTC 2012 i686 i686 i386 GNU/Linux