Change number of channels at runtime

[shogun_panda]

Hi! I have an Acer laptop which ships an Intel HDA sound card.

This cards support both 5.1 and 2.0 output (which I can manage with channels option), but in former case I have to use all 3 jacks (output, line-in and mic-in) to obtain 5.1 output. When I want to plug a mic or any other device in mic-in or line-in jacks, I have to switch to 2.0 mode.

With ALSA, this could be done with a switch in the mixer. Unfortunately, PA doesn't seems to support this and I have to restart the server (or reload the module) every time to reflect this change. Should be channels numbers be modifiable at runtime?

Best regards!

Shogun

[shogun_panda]

I just notice I report a little error. ALSA mixer switch only changes jacks' routing, not the channel count. Sorry for the mistake!

[lennart]

Closing this then.

[shogun_panda]

Hi!

I think you set this to invalid by reading my second comment. But when I talked about my mistake I didn't refer to entire ticket but only on what I have written.

What I mean is that this ticket should be read as: "Should you add the possibility to change sink's channels' number at runtime?"

Sorry for misunderstanding. Best regards!

Shogun

[rodrigo]

Patch from openSUSE to allow changing speaker setup on the fly

[rodrigo]

For this patch we just kill and restart the pulseaudio daemon, but it doesn't work very well, so there should be a better solution

[lennart]

PA in git now allows "hot" changing of input/output profiles of sound cards. i.e. you can switch between "Analog Stereo", "Digital Stereo", "Analog 5.1" on-the-fly.