Sorry about not being clear, my english is not that much good =) By "Speaker audio channel" yes, I mean "Speaker" volume in alsamixer. It also mute the headphone output.
Seems that headphone ans speakers are muted/unmuted together by the sound card, by the same volume control. The strange thing is that only the mute/unmute affects the headphone, but the volume itself at the Speaker control does not affect the headphone. The headphone's volume is controlled by it's own control in alsamixer. I did more tests and here are some more curiosities: When the Speaker control goes mute in alsamixer, the mute led goes mute/orange (even if the master volume control is not muted). When I plug in the headphone only the Speaker control gets muted but not the master volume (witch is expected). If I go to the alsamixer and manually unmute the speaker volume, I get sound to headphone, but not to the speakers (witch is desired). Now there is no muted volume/channel in alsamixer. If I manually mute the Headphone volume while the headphone is plugged in, the master volume also gets muted and the led goes muted/orange. If then I unmute just the Headphone volume, the master volume don't get unmuted, there is no sound and mute led still mute/orange. Then if I unmute the master volume the led gets unmuted/gray ( witch is expected) but there is no sound to headphone, even with no channel muted: only when I change the Headphone's volume in alsamixer UP or LOW the sound comes back. If I can do more tests or get more hardware info please just tell me what to do. Thanks! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/921397 Title: Speaker audio channel goes mute after plugging in the headphone To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/921397/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
