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[Mark Rijckenberg <question78571@xxxxxxxxxxxxxxxxxxxxx>]

Question #78571 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/78571

    Status: Open => Answered

Mark Rijckenberg proposed the following answer:
Hi,

Please keep the C-Media USB Headphone Set unplugged and disconnected
from your pc while performing the following procedure.

In System/Administration/Users and Groups , make sure that your user and
the root user are members of the following groups:

 pulse
 pulse-access
 pulse-rt

Then please try this procedure:

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 being 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=hp-dc7600
options snd-hda-intel enable_msi=1

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

4. reboot and retest sound on the speakers

5. If sound still does not work, then replace hp-dc7600 with one of the
following  model options:

	ALC260
	  hp		HP machines
	  hp-3013	HP machines (3013-variant)
	  hp-dc7600	HP DC7600
	  fujitsu	Fujitsu S7020
	  acer		Acer TravelMate
	  will		Will laptops (PB V7900)
	  replacer	Replacer 672V
	  basic		fixed pin assignment (old default model)
	  test		for testing/debugging purpose, almost all controls can
			adjusted.  Appearing only when compiled with
			$CONFIG_SND_DEBUG=y
	  auto		auto-config reading BIOS (default)

6. You will have to reboot and retest sound after every model option
change to the alsa-base.conf file

Regards,

Mark

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