At Wed, 11 Jul 2012 12:50:20 +0200, David Henningsson wrote:
It seems like on one machine the "Speaker Playback Volume" was part of the headphone path, in combination with PulseAudio this is leading to muted headphones.
One of my colleagues wrote a workaround for that specific machine - I'm providing links in case you're interested:
The patch: https://launchpadlibrarian.net/109499922/restrict_bass.patch
Alsa-info: https://launchpadlibrarian.net/109251353/bad-kernel-yes-headphones.txt
Bug link: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/994685
This doesn't happen with the recent kernel, right?
As far as I've tested with hda-emu, 3.6 kernel picks up the headphone path as the primary, as this has the least badness value.
thanks,
Takashi