Please add alsa-firmware. Thats the very first recommendation in the troubleshooting guide. I’m very surprised you missed that. Then restart your PC and test. I may not help, but it might.
What happened to your pulse apps?
OK, this is typically the case with KDE4. No problems here.
Hmmm … I see you have an old kernel, and have not applied any of the security updates to your 11.0 kernel.
I’m a bit concerned here by this old kernel, because if we fix your sound, and you then update your kernel, that update could end up breaking the sound and you would have to use the knowledge you learned from this thread to do things over again.
Anyway, from the diagnostic script I see this in your mixer:
Simple mixer control ‘Master’,0
Capabilities: pvolume pvolume-joined pswitch pswitch-joined
Mono: Playback 88 [69%] -29.25dB] [on]
Simple mixer control ‘PCM’,0
Capabilities: pvolume
Front Left: Playback 128 [50%] -25.40dB]
Front Right: Playback 128 [50%] -25.40dB]
when testing sound, I recommend around 95%, and then once one has sound, back off to a lower level to avoid distortion, In some not too common cases the sound volume control is not linear, and one gets no sound to 75% or so. I have no idea if you have one of those cases, but maybe it is prudent to try a higher volume setting?
Anyway, from the script I see you have a STAC9205. Searching the alsa web site for that codec I get this:
Search results for stac9205 - AlsaProject
I note this list in the ALSA-Configuration.txt file for 1.0.16 of alsa:
STAC9205/9254
ref Reference board
dell-m42 Dell (unknown)
dell-m43 Dell Precision
dell-m44 Dell Inspiron
Do you have a Dell ? Lets say you have a Dell Inspiron, … then what you could do is modify your /etc/modprobe.d/sound file (adding another line after the first) such that it looks like this:
options snd slots=snd-hda-intel
options snd-hda-intel model=dell-m44
# u1Nb.PtEgHHcFBEE:82801H (ICH8 Family) HD Audio Controller
alias snd-card-0 snd-hda-intel
and then restart your PC and test your sound. Check your mixer.
If “dell-m44” in that /etc/modprobe.d/sound file does not work, replace it with “dell-m42” , restart, and try again. The same goes for “dell-m43”.
If that does not work, we can look at an alsa update (I can give you some commands for that to make it easy) but I have read no indication that an alsa update is absolutely necessary.