Playback working randomly with Intel ALC892

[^rooker]

Running Xubuntu Oneiric (11.10) on an Intel DH67BL mainboard, my Ubuntu randomly disables the rear-output of my onboard-soundcard (Intel HDA ALC892). Flickering the audio levels and mute-state of the Master output, before turning mute.

I've found out, that it seems to be related to whether the front audio-panel is enable in my BIOS or not.

When I enable the front-audio, the volume meters for "Headphone", "Front" and "Master" seem relate to the same output: Front.
This "mute-problem" seems to only affect the rear output. When I playback music, and cannot hear sound on my rear-output, the front-output is working fine.

Disabling the front-audio panel in my BIOS prevents triggering this issue.

[^rooker (rooker)]

This linux-kernel mailing list entry sounds similar:
http://lkml.indiana.edu/hypermail/linux/kernel/1201.1/00016.html

[Marcus Tomlinson (marcustomlinson)]

This release of Ubuntu is no longer receiving maintenance updates. If this is still an issue on a maintained version of Ubuntu please let us know.

[Launchpad Janitor (janitor)]

[Expired for alsa-driver (Ubuntu) because there has been no activity for 60 days.]