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This is an HP TouchSmart 320, model number 320-1200m. I'm using Ubuntu 11.04.

Hardware information:

root@hp320:/home/mpower# aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Generic [HD-Audio Generic], device 0: STAC92xx Analog [STAC92xx Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

root@hp320:~$ cat /proc/asound/card0/codec#0 | grep Codec
Codec: IDT 92HD91BXX

Sound to headphone jack works properly, but sound to built-in speakers does not work. I have installed Windows, and with Windows 7 installed, all audio hardware works properly, so this isn't a hardware fault.

I've looked at https://help.ubuntu.com/community/HdaIntelSoundHowto and have been unable to find my card in http://www.kernel.org/doc/Documentation/sound/alsa/HD-Audio-Models.txt .

I have tried adding almost every conceivable model in the line "options snd-hda-intel model=MODEL" line I added to /etc/modprobe.d/alsa-base.conf.

Update 2011-11-09 2:31 PM PST: I've gone to Control Center -> Sound Preferences to attempt settings that make sound work. The "Hardware" tab shows one device: "Internal Audio 1 Output / 1 Input Analog Stereo Duplex." There are two output profiles listed in the selection box at the bottom of the tag: Analog Stereo Duplex and Analog Stereo Output. Neither cause sound to emit from the speakers.

I've also run alsamixer on the command-line and ensured that everything is set to maximum and nothing is muted.

Update 2011-11-09 5:15 PM PST: I've replicated the exact same symptoms in 11.10.

Update 2011-11-10 11:31 AM PST: I've filed a bug in launchpad: https://launchpad.net/ubuntu/+source/alsa-driver/+bug/888703

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This question should instead be filed as a bug report, and as such is off-topic, thanks! Instructions on filing a bug report are here. Oops you already have filed it as a bug, sorry! – coversnail Apr 26 '12 at 7:19

closed as off topic by Marco Ceppi♦ Apr 26 '12 at 7:24

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2 Answers

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Have you tried different combinations of settings in Sound Menu > Sound Preferences? The fix will probably be in there.

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Thanks, William! Yes, I have. Details in update to my original question. – Schof Nov 9 '11 at 22:31
Hmm... That's strange. File a detailed bug report on launchpad.net. That's the best way to get a problem like this solved, I've found. – William Nov 9 '11 at 23:03
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You can fix this by changing output to Analogue speakers instead of Analogue Headphones, in Sound Settings >> Output

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The two choices are "Analog Output" and "Analog Headphones." Both have the same symptoms. – Schof Nov 10 '11 at 19:04

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