Ubuntu 12.04 audio problems

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redpost
Posts: 59
Joined: Tue Apr 21, 2009 2:06 pm

Ubuntu 12.04 audio problems

Post by redpost »

Tested on two Intense PC entry models, to rule out hardware problems. I started by installing Ubuntu 12.04, ran system update (to 12.04.1).

There is just one audio output, "Digital Output (S/PDIF) Built-in Audio" (photo attached).

Audio doesn't work. If I pull the audio connector out and hold it at just the right spot, I can hear sound that's quiet and it's very distorted. Oddly, if I turn the volume down (while holding the connector at just the right spot), the audio gets less distorted but is still really quiet.

If I plug in a USB audio speaker, audio works perfectly fine.

The output of aplay -l (without the USB audio speaker plugged in) is:

Code: Select all

**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC888 Analog [ALC888 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: ALC888 Digital [ALC888 Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
I tried updating to the latest kernel, 3.6.5, which had the same problem as 3.2.0-30 (the 12.04.1 kernel). 3.6.5 would not reboot successfully for me, so I removed it.

Any suggestions? Is there no headphone level output on the IPC?
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redpost
Posts: 59
Joined: Tue Apr 21, 2009 2:06 pm

Re: Ubuntu 12.04 audio problems

Post by redpost »

I tried a bunch of other Pulseaudio and other suggestions I found online...nothing seems to work. It looks like the analog interface is just not found by the system. Everything else appears to function. Any ideas?

gabrielh
Site Admin
Posts: 1260
Joined: Thu Jun 02, 2011 1:13 pm

Re: Ubuntu 12.04 audio problems

Post by gabrielh »

1. Please open PulseAudio
2. Navigate to Configuration tab
3. Choose "Analog Stereo Duplex" from the Profile dropbox
4. Double check that you use the audio output connector (the left one) on the back of the Intense PC
5. Test you audio
Gabriel Heifets

Fit-PC2/3/IntensePC support.

redpost
Posts: 59
Joined: Tue Apr 21, 2009 2:06 pm

Re: Ubuntu 12.04 audio problems

Post by redpost »

I needed to first install the PulseAudio Volume Control application from Ubuntu's Software Center. Launched the application, went to the Configuration tab and selected "Analog Stereo Duplex". Audio now works!

However, when I go to system settings, the audio reverts to digital output and stops working with headphones. I need to go back into Volume Control and reset to Analog to get audio back. Weird.

Sounds like an Ubuntu so PulseAudio bug (or both!).

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