HP Pavilion dv7

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Music Adapter

   Model - 3D Sound Blaster Pro compatible sound 16 bit integrated
   Status - Works after fix. See below for solution
   lshw (Hardware Lister)
   **** List of PLAYBACK Hardware Devices ****
   card 0: SB [HDA ATI SB], device 0: STAC92xx Analog [STAC92xx Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
   card 0: SB [HDA ATI SB], device 1: STAC92xx Digital [STAC92xx Digital]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
   card 1: HDMI [HDA ATI HDMI], device 3: ATI HDMI [ATI HDMI]
   Subdevices: 1/1
   -multimedia
   description: Audio device
   product: R700 Audio Device [Radeon HD 4000 Series]
   vendor: ATI Technologies Inc
   physical id: 0.1
   bus info: pci@0000:01:00.1
   version: 00
   width: 32 bits
   clock: 33MHz
   capabilities: pm pciexpress msi bus_master cap_list
   configuration: driver=HDA Intel latency=0 module=snd_hda_intel
   *-multimedia
   description: Audio device
   product: SBx00 Azalia (Intel HDA)
   vendor: ATI Technologies Inc
   physical id: 14.2
   bus info: pci@0000:00:14.2
   version: 00
   width: 64 bits
   clock: 33MHz
   capabilities: pm bus_master cap_list
   configuration: driver=HDA Intel latency=64 module=snd_hda_intel
   Codec: IDT 92HD75B3X5

Solution

1. Update you alsa drivers, lib, utilities to version 1.0.20. 2. Edit /etc/modprobe.d/alsa-base.conf

Comment out 3 lines in there, so it does like like that#

# Workaround at bug #499695 (reverted in Ubuntu see LP #319505)
#install snd-pcm /sbin/modprobe --ignore-install snd-pcm $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-pcm-oss ; : ; }
#install snd-mixer /sbin/modprobe --ignore-install snd-mixer $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-mixer-oss ; : ; }
#install snd-seq /sbin/modprobe --ignore-install snd-seq $CMDLINE_OPTS && { /sbin/modprobe --quiet --use-blacklist snd-seq-midi ; /sbin/modprobe --quiet --use-blacklist snd-seq-oss ; : ; }
#

and on the end of this docuemtn add these:

alias snd-card-0 snd-hda-intel
alias sound-slot-0 snd-hda-intel
options snd-hda-intel model=dell-m4-1
options snd-hda-intel enable_msi=1

Job done and I got sound

http://ubuntuforums.org/showthread.php?p=7761340