I have an HP Pavillion tx2000z, and from a fresh install the audio was completely nonfunctional. After a goodly amount of work I have gotten pretty much everything working. Here’s how:
Firstly, we need to change our sound server. Intrepid (and presumably Jaunty) uses PulseAudio as the default audio server, but pulseaudio is not properly compatible with the realtek audio card in HP’s tx series. ALSA (Advanced Linux Sound Architecture) works much better.
Open up the Sound Preferences (System>Preferences>Sound) and change all the options to ALSA. For default mixer tracks, you want HDA NVidia (Alsa Mixer). Highlight the master track.
Next, a little bit of tweaking to ensure that all of our volume controls are on the same page.
Right click the volume control icon in the status tray and select preferences. Make sure it says HDA NVidia (Alsa Mixer) and that master is highlighted. Close that dialogue box and double click on the volume control icon to open up the channel mixer. “Headphone,” “PCM,” and “Front” should all be at max. The “Master” channel is the variable, that is when you want your audio soft you turn it down and when you want your audio loud you turn it up. The volume control icon in your status tray controls the master channel.
Finally, just a little bit of command line work and we’ll be ready to jam.
sudo gedit /etc/modprobe.d/alsa-base
Scroll to the very bottom and add this string:
options snd-hda-intel model=hp
Save the file and restart your computer. When it’s back in the land of the living, your built-in speakers and headset jacks will be working, and it will automatically switch between them when you plug something in. I haven’t tested the built in mic- never had a reason to use it.
Happy Clicking!
sarai@Sarai-Laptop: ~$ 