Ubuntu

Too many channels with HDMI audio

Asked by Simon Fredriksson

Recently installed 10.04 after using ArchLinux for a long time. Now I've got trouble with audio through HDMI. I think the system believes I have more speakers than I actually do (2 speaker stereo). So some audio is not heard because the system tries to play it on a speaker that does not exist. I had this working properly before the re-install. Is it within ALSA or Pulse? What needs to change?

00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller
01:00.0 VGA compatible controller: nVidia Corporation G96 [GeForce 9500 GT] (rev a1)
Advanced Linux Sound Architecture Driver Version 1.0.23.
Linux fenrir 2.6.32-24-generic #39-Ubuntu SMP Wed Jul 28 06:07:29 UTC 2010 i686 GNU/Linux
Ubuntu 10.04 LTS

Question information

Language:
English Edit question
Status:
Solved
For:
Ubuntu Edit question
Assignee:
No assignee Edit question
Solved by:
Simon Fredriksson
Solved:
Last query:
Last reply:
Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#1

You could try adding this PPA:
https://launchpad.net/~ricotz/+archive/unstable

It may help.

Revision history for this message
Simon Fredriksson (simon-lan2k) said : 		#2

No difference after installing those updates. I get sound but it plays the wrong channels. Checked ALSA-mixer and I can only select 6 or 8 channels. I want 2.

Screenshots of my settings:
http://img217.imageshack.us/img217/6092/alsamixer.png
http://img24.imageshack.us/img24/1203/screenshotsoundprefereno.png
http://img835.imageshack.us/img835/1548/screenshotsoundpreferen.png

Revision history for this message
Simon Fredriksson (simon-lan2k) said : 		#3

Apparently TV was set to use only play channel A instead of Stereo. Odd, but now resolved.