Binary package hint: pulseaudio
If this bug looks familiar, it is because it was fixed in Lucid under bug 451635. The changes made then were not carried forward to Maverick.
When testing Maverick Beta release, audio is available on rear RCA jacks only. No way to enable audio on headphones.
ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: pulseaudio 1:0.9.22~0.9.21+stable-queue-32-g8478-0ubuntu19
ProcVersionSignature: User Name 2.6.32-409.25-dove 2.6.32.15+drm33.5
Uname: Linux 2.6.32-409-dove armv7l
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: armel
Date: Mon Sep 20 18:39:02 2010
InstallationMedia: Ubuntu-Netbook 10.10 "Maverick Meerkat" - Alpha armel+dove (20100920)
ProcEnviron:
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: pulseaudio
The pulseaudio package still has the patch to fix the bug you referred to. So at a glance, my guess is that mixer element names have changed in the driver. I'll need to check 451635 and this bug to compare mixer elements.
affects ubuntu/pulseaudio
status triaged