Public bug reported:
Output from: `lsb_release -rd`
Description: Ubuntu 11.10
Release: 11.10
Output from: `apt-cache policy alsa-base`
alsa-base:
Installed: 1.0.24+dfsg-0ubuntu2
Candidate: 1.0.24+dfsg-0ubuntu2
Version table:
*** 1.0.24+dfsg-0ubuntu2 0
500 http://nl.archive.ubuntu.com/ubuntu/ oneiric/main amd64 Packages
100 /var/lib/dpkg/status
Expected:
1) Plug-in headphones
2) Output switches automatically to 'Internal Audio Analog Stereo' port 'Analog
Headphones'
3) Speakers are muted
4) Sound resumes on headphones
What happens:
1) Plug-in headphones
2) Output switches automatically to 'Internal Audio Analog Stereo' port 'Analog
Headphones'
3) Speakers are muted
4) Headphones are muted as well!
Further notes:
* When switching back to the 'Analog Speakers' port sound works on the
headphones and speakers are muted.
* I have a second headphone socket which is marked as an S/PDIF output and
works on the PCM channel at `alsamixer`
* Setting Auto-Mute Mode in `alsamixer` to 'Disabled' prevents the automatic
switching (step 2) and lets sound play on both the speakers and headphones.
* When setting Auto-Mute Mode in `alsamixer` to 'Disabled' to have both
speakers and headphones output audio, the 'Headphone' and 'Speaker' channels
control both speaker and headphone volume and assumes the volume level of
whichever channel was changed last.
** Affects: alsa-driver (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 oneiric
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https://bugs.launchpad.net/bugs/913451
Title:
Headphone output on wrong port Dell XPS 15
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