Comment 21 for bug 364706

Hi all,

Please try this workaround procedure which worked in https://answers.launchpad.net/ubuntu/+question/69080

1. copy-paste the following command into the Terminal:

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

2. and add these lines to the end of the /etc/modprobe.d/alsa-base.conf file:

# Keep snd-pcsp from beeing loaded as first soundcard
options snd-pcsp index=-2
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

3. Then navigate to System>Preferences>Sound and change everything to ALSA

4. copy-paste the following command into the Terminal:

gksudo gedit /etc/group

5. replace the following line (or something very similar to it):

audio:x:29:pulse

with this line:

audio:x:29:<your Ubuntu logon name>,pulse

6. reboot and retest sound

7. In the Mixer control panel, make sure to unmute all channels and increase the volume on all channels

8. If the dell-m4-1 alsa-base.conf option does not work, please try one of the following, reboot your pc and retest sound:

 STAC9200
   ref Reference board
   dell-d21 Dell (unknown)
   dell-d22 Dell (unknown)
   dell-d23 Dell (unknown)
   dell-m21 Dell Inspiron 630m, Dell Inspiron 640m
   dell-m22 Dell Latitude D620, Dell Latitude D820
   dell-m23 Dell XPS M1710, Dell Precision M90
   dell-m24 Dell Latitude 120L
   dell-m25 Dell Inspiron E1505n
   dell-m26 Dell Inspiron 1501
   dell-m27 Dell Inspiron E1705/9400
   gateway Gateway laptops with EAPD control
   panasonic Panasonic CF-74

 STAC9205/9254
   ref Reference board
   dell-m42 Dell (unknown)
   dell-m43 Dell Precision
   dell-m44 Dell Inspiron

 STAC9220/9221
   ref Reference board
   3stack D945 3stack
   5stack D945 5stack + SPDIF
   intel-mac-v1 Intel Mac Type 1
   intel-mac-v2 Intel Mac Type 2
   intel-mac-v3 Intel Mac Type 3
   intel-mac-v4 Intel Mac Type 4
   intel-mac-v5 Intel Mac Type 5
   intel-mac-auto Intel Mac (detect type according to subsystem id)
   macmini Intel Mac Mini (equivalent with type 3)
   macbook Intel Mac Book (eq. type 5)
   macbook-pro-v1 Intel Mac Book Pro 1st generation (eq. type 3)
   macbook-pro Intel Mac Book Pro 2nd generation (eq. type 3)
   imac-intel Intel iMac (eq. type 2)
   imac-intel-20 Intel iMac (newer version) (eq. type 3)
   dell-d81 Dell (unknown)
   dell-d82 Dell (unknown)
   dell-m81 Dell (unknown)
   dell-m82 Dell XPS M1210

 STAC9202/9250/9251
   ref Reference board, base config
   m2-2 Some Gateway MX series laptops
   m6 Some Gateway NX series laptops
   pa6 Gateway NX860 series

 STAC9227/9228/9229/927x
   ref Reference board
   3stack D965 3stack
   5stack D965 5stack + SPDIF
   dell-3stack Dell Dimension E520
   dell-bios Fixes with Dell BIOS setup

 STAC92HD71B*
   ref Reference board
   dell-m4-1 Dell desktops
   dell-m4-2 Dell desktops

Regards,

Mark