bright lattices of logic unfolding across that colorless void…

1. Create ice1712-pulseaudio-workaround.rules and copy to /etc/udev/rules.d/

SUBSYSTEM!=”sound”, GOTO=”ice1712_end”
ACTION!=”change”, GOTO=”ice1712_end”
KERNEL!=”card*”, GOTO=”ice1712_end”

SUBSYSTEMS==”pci”, ATTRS{vendor}==”0×1412″, ATTRS{device}==”0×1712″, ATTRS{subsystem_vendor}==”0×1412″, ATTRS{subsystem_device}==”0xd634″, ENV{PULSE_PROFILE_SET}=”via-ice1712.conf”

LABEL=”ice1712_end”

2. Create via-ice1712.conf and copy to /usr/share/pulseaudio/alsa-mixer/profile-sets/

# This file is part of PulseAudio.
#
# PulseAudio is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation; either version 2.1 of the
# License, or (at your option) any later version.
#
# PulseAudio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with PulseAudio; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.

; Via ICE1712 multi-channel audio chipset
;
; This chipset has up to four stereo pairs of input and four stereo pairs of
; output, named channels 1 to 8. Also available are separate S/PDIF stereo
; channels (input and output), and a separate “system-out” stereo jack that
; supports 6-channel hardware mixing.
;
; The S/PDIF stereo channels can be controlled via the mixer for hw:0, and
; additionally, the 8 main outputs can be loop-routed to a separate stereo
; input pair, available as channels 11 and 12.
;
; Many cards available from vendors do not expose all channels from this chip
; to an external port, which effectively reduces the number of channels that
; are useful to the user. However, the ALSA driver still exposes all channels
; even if they are not connected.
;
; We knowingly only define a subset of the theoretically possible
; mapping combinations as profiles here.
;
; See default.conf for an explanation on the directives used here.

[General]
auto-profiles = no

[Mapping analog-mch-in]
description = Analog Multi-Channel Main Input
device-strings = hw:%f,0
#channel-map = front-left,front-right,rear-left,rear-right,front-center,lfe,side-left,side-right,aux0,aux1,aux2,aux3
channel-map = aux0,aux1,front-left,front-right,aux2,aux3,aux4,aux5,aux6,aux7,aux8,aux9
direction = input

[Mapping analog-mch-out]
description = Analog Multi-Channel Main Output
device-strings = hw:%f,0
#channel-map = front-left,front-right,rear-left,rear-right,front-center,lfe,side-left,side-right,aux0,aux1
channel-map = front-left,front-right,aux0,aux1,aux2,aux3,aux4,aux5,aux6,aux7
direction = output

[Mapping digital-stereo]
description = Digital Stereo Input/Output
#device-strings = hw:%f,1
device-strings = iec958:%f
channel-map = left,right
direction = any

[Mapping analog-system-out]
description = Analog Stereo System-Out
device-strings = hw:%f,2
channel-map = left,right
direction = output

[Profile output:mch]
description = Multi-Channel Output Active (Digital Disabled)
output-mappings = analog-mch-out analog-system-out
input-mappings =
priority = 90
skip-probe = yes

[Profile output:mch+input:mch]
description = Multi-Channel Input/Output (Digital Disabled)
output-mappings = analog-mch-out analog-system-out
input-mappings = analog-mch-in
priority = 100
skip-probe = yes

[Profile output:spdif]
description = Digital Output (Multi-Channel Disabled)
output-mappings = digital-stereo analog-system-out
input-mappings =
priority = 80
skip-probe = yes

[Profile output:spdif+input:spdif]
description = Digital Input/Output (Multi-Channel Disabled)
output-mappings = digital-stereo analog-system-out
input-mappings = digital-stereo
priority = 90
skip-probe = yes

[Profile output:system]
description = System Output Only
output-mappings = analog-system-out
input-mappings =
priority = 60
skip-probe = yes

3. Permissions on each file should be -rw-r–r–
4. Reboot for the udev changes to take effect.

Solution found in redhat buzilla:

https://bugzilla.redhat.com/show_bug.cgi?id=499435#c29

Edit your /usr/share/alsa/cards/ICE1712.conf and change the following:

–snip–

ICE1712.pcm.front.0 {
@args [ CARD ]
@args.CARD {
type string
}
type route
ttable.0.0 1
ttable.1.1 1
slave.pcm {
type hw
card $CARD
}
slave.format S32_LE
slave.channels 10
}

–snip–

NOTE: The only change in my ICE1712.conf was the addition of these two lines:

slave.format S32_LE
slave.channels 10

note: this change may be obsoleted by the next post