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<b><a class="bz_bug_link
bz_status_NEW "
title="NEW - Focusrite Scarlett forced to Multichannel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93163#c6">Comment # 6</a>
on <a class="bz_bug_link
bz_status_NEW "
title="NEW - Focusrite Scarlett forced to Multichannel"
href="https://bugs.freedesktop.org/show_bug.cgi?id=93163">bug 93163</a>
from <span class="vcard"><a class="email" href="mailto:vogelchr@vogel.cx" title="Christian Vogel <vogelchr@vogel.cx>"> <span class="fn">Christian Vogel</span></a>
</span></b>
<pre>Same problem with a Behringer X18R mixer as a 18ch input/output device, this
workaround only works when running in 18ch mode. Operation mode is selectable
in the Windows/Linux/Mac/Android mixing application to be 2 or 18ch in/out.
<a href="http://www.music-group.com/Categories/Behringer/Mixers/Digital-Mixers/XR18/p/P0BI8">http://www.music-group.com/Categories/Behringer/Mixers/Digital-Mixers/XR18/p/P0BI8</a>
By default line-level returns are on channels 17/18, so it makes sense to put
front-left/front-right there. So a routing of 16 "aux" channels, then
left/right is used.
My /usr/share/pulseaudio/alsa-mixer/profile-sets/behringer_xr18.conf:
: ;
: ; Behringer XR18: 18 inputs, 18 outputs when in 18ch mode
: ;
: ; left,right comes at the end, because in 18ch mode the last two
: ; channels are routed to/from aux-input which is most likely where
: ; you want to have your mp3 player input or jingles or ...
: ;
:
: [General]
: auto-profiles = no
:
: [Mapping analog-out]
: description = Analog Outputs
: device-strings = hw:%f
: channel-map =
aux0,aux1,aux2,aux3,aux4,aux5,aux6,aux7,aux8,aux9,aux10,aux11,aux12,aux13,aux14,aux15,left,right
:
: [Mapping analog-in]
: description = Analog Inputs
: device-strings = hw:%f
: channel-map =
aux0,aux1,aux2,aux3,aux4,aux5,aux6,aux7,aux8,aux9,aux10,aux11,aux12,aux13,aux14,aux15,left,right
: direction = input
:
: [Profile output:analog-out+input:analog-in]
: description = Analog Duplex
: output-mappings = analog-out
: input-mappings = analog-in
: priority = 100
: skip-probe = yes
$ lsusb
(...)
Bus 001 Device 014: ID 1397:00d4 BEHRINGER International GmbH</pre>
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