Sound in Ubuntu 9.10 - Intel 82801G

The sound on my Medion MD96290 didn't work after upgrading to Ubuntu 9.10 (Karmik Koala). I experience this glitch on every Ubuntu upgrade - see my previous post.

My sound chip:

$ sudo lspci -v
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
Subsystem: Wistron Corp. Device 4071
Flags: bus master, fast devsel, latency 0, IRQ 21
Memory at d8440000 (64-bit, non-prefetchable) [size=16K]
Capabilities: [50] Power Management version 2
Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable-
Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
Capabilities: [100] Virtual Channel
Capabilities: [130] Root Complex Link
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
...

Fixing is easy:

• gksudo gedit /etc/modprobe.d/alsa-base
• add one line to the end of the file:
  options snd-hda-intel model=6stack-dig
• save and reboot
• rightclick on the volume icon and select Sound Preferences
• in the hardware tab, select a profile with "Surround" in it.

update 6/6/2010: this tip also works for ubuntu 10.4.

Sound in Ubuntu

On one of my laptops (Medion MD96290) I noticed that the sound wasn't working any more under Ubuntu 8.04. A while ago, I managed to get sound going in Ubuntu7.10 (http://forum.ubuntu-fr.org/viewtopic.php?pid=1290804)

After some research (http://ubuntuforums.org/archive/index.php/t-765671.html) I added the following line to /etc/modprobe.d/alsa_base:
options snd-hda-intel model=6stack-dig

This didn't help. In the same forum, they suggest to enable surround. In Edit/Preferences you can display the Surround slider.

And the magic happened: the sound workz :-). Setting up sound can be quite complex in Ubuntu...

update 15/11/2008: I had to repeat the same actions after upgrading to Ubuntu 8.10: add line to alsa-base file and enable the surround slider.