Kernel Bug Tracker – Bug 12862
No headphone control in Sigmatel HDA
Last modified: 2009-03-14 11:16:45 UTC
Latest working kernel version: 2.6.28
Earliest failing kernel version: 2.6.29-rc7?
Distribution: Ubuntu Jaunty
Hardware Environment: Dell Vostro 1400
Software Environment: Alsa/Audacious
Problem Description: Inserting a headphone does not kill sound on built-in speakers, there is no separate headphone volume/mute control in alsamixer under 2.6.29-rc7
Steps to reproduce: boot 2.6.29-rc7, play audio, plug headphone: still sound from internal speakers (AND sound from headphones). No headphones volume/mute in kmix or alsamixer.
Try the very latest Linus git tree. A couple of fixes for Dell laptops are in after rc7.
If it still doesn't work, try sound git tree (master branch)
Anyway, please run alsa-info.sh with --no-upload option and attach the generated file. This will contain more detailed hardware information. The script is found at:
Created attachment 20515 [details]
alsa-info (ran as user)
This is the requested info. I'd prefer to stick with rc's when possible. They're on-the-edge enough for me as I'm running rc7 on a "production" laptop.
Then try rc8 released yesterday :)
It's fixed in rc8.