[pulseaudio-discuss] hda intel + Line-In + ext. mic

[Lennart Poettering]

On Thu, 11.02.10 00:23, Николай Коротинский (magedon.zt at gmail.com) wrote:

> Hi all,
> 
> I have a laptop Amilo Si 3655 and Ubuntu 9.10 64

Please read this before reporting bugs upstream.

http://pulseaudio.org/wiki/UbuntuBugs

> I have 2 mic: internal and external.
> Internal mic work successfully.
> But external Mic and Line-In work as outputs.
> 
> Line-In output surround channel.
> Mic output Center and LFE channels.
> 
> But sometime I need external Mic and Line-In.
> How I can change channels on Line-In and Mic?

This is called "Jack Retasking".

Most likely you have some kind of low-level ALSA mixer control that
allows you to retask your jacks. Please check whether you can find one
with "alsamixer -c0".

If you find a control like this and it is apparently not set properly
when PA changes device profiles then this is probably something that
should be fixed in alsa.

i.e. when the "surround51:x" device string is opened ALSA should toggle the
retasking controls to enable 6ch mode, and when the device is closed
again or opened as "front:x" ALSA should toggle the retasking control
back to 2ch duplex mode.

This would then work similarly to how the SPDIF low-level controls are
toggled when "spdif:xxx" is opened/closed.

Lennart

-- 
Lennart Poettering                        Red Hat, Inc.
lennart [at] poettering [dot] net
http://0pointer.net/lennart/           GnuPG 0x1A015CC4