I looked at your guide, but I got stuck pretty quickly because I couldn't even successfully open the volume/sound control in the top system tray without getting errors.
Originally Posted by markbuntu
I fixed my sound problem though (running a Toshiba A215-???? laptop, kernel 2.6.27-4), by more or less directly following this guide -
Essentially, I updated to the latest version of ALSA (by directly following the steps in the section "Update to the Latest Version of ALSA"). Note on that step - the latest version of ALSA will of course have the latest "Last Modified" date near it when you are downloading the files. After downloading the thee archives I proceeded to open the file "alsa-base" in gedit -
...ensuring the line
sudo gedit /etc/modprobe.d/alsa-base
was at the bottom. If you're looking at this post are trying to troubleshoot for your laptop/desktop, you'll probably need to change the model you put in the file. The process for finding out your model is by running the following command to get the codec -
options snd-hda-intel model=toshiba
Next to Codec: will be the name of your soundcard. (For instance, I found Realtek ALC268, so I remembered "ALC268" and went on)
cat /proc/asound/card0/codec#* | grep Codec
Then the guide says to run through a file and look for a reference to this codec.
The file (updated continuously I believe) is online, here -
or locally on your machine it may be here -
Safe bet is to use the one online.
Open it up and search for references to the codec you found before. You should get a result, at which point you'll see a list of models that are associated with the codec. Pick the one that best describes your machine (in my caes, "toshiba" because my laptop is Toshiba ).
Then I went to System -> Preferences -> Sound and made sure everything was on Autodetect.
Then I rebooted. Everything worked at that point.