Sound support issues
Before i started using dedicated socket, audio support was not reliable. VM was using device which was main device when launching. The solutions is creatin
Solution
Use pulseaudio socket created by pipewire-pulse compatibility layer.
Guide
- Install pipewire, replace pulseaudio if asked
sudo pacman -S pipewire-pulse
sudo usermod -aG audio $USER
- Logout and login
Manually generate config (recommended)
Create mkdir -p ~/.config/pipewire directory
- Create diff file
pipewire-pulse.conf.diff
--- a.conf 2023-11-13 13:39:07.178316250 +0100
+++ b.conf 2023-11-13 13:43:12.856968101 +0100
@@ -50,6 +50,7 @@
# Extra scripts can be started here. Setup in default.pa can be moved in
# a script or in pulse.cmd below
context.exec = [
+ { path = "/bin/chgrp" args = "libvirt-shared /tmp/pulse" }
#{ path = "pactl" args = "load-module module-always-sink" }
#{ path = "pactl" args = "upload-sample my-sample.wav my-sample" }
#{ path = "/usr/bin/sh" args = "~/.config/pipewire/default.pw" }
@@ -85,6 +86,7 @@
# the addresses this server listens on
server.address = [
"unix:native"
+ "unix:/tmp/pulse"
#"unix:/tmp/something" # absolute paths may be used
#"tcp:4713" # IPv4 and IPv6 on all addresses
#"tcp:[::]:9999" # IPv6 on all addresses
and create config file patch /usr/share/pipewire/pipewire-pulse.conf -o ~/.config/pipewire/pipewire-pulse.conf < pipewire-pulse.conf.diff
Use provided config
- Create user-local pipewire configuration. As this configuration is local, machine will work only for current user (otherwise it will fail to boot as it did not found
/tmp/pulsesocket), that was not an issue for me, but potential fix is easy - making this config global.
~/.config/pipewire/pipewire-pulse.conf [644]
# PulseAudio config file for PipeWire version "0.3.84" #
#
# Copy and edit this file in /etc/pipewire for system-wide changes
# or in ~/.config/pipewire for local changes.
#
# It is also possible to place a file with an updated section in
# /etc/pipewire/pipewire-pulse.conf.d/ for system-wide changes or in
# ~/.config/pipewire/pipewire-pulse.conf.d/ for local changes.
#
context.properties = {
## Configure properties in the system.
#mem.warn-mlock = false
#mem.allow-mlock = true
#mem.mlock-all = false
#log.level = 2
#default.clock.quantum-limit = 8192
}
context.spa-libs = {
audio.convert.* = audioconvert/libspa-audioconvert
support.* = support/libspa-support
}
context.modules = [
{ name = libpipewire-module-rt
args = {
nice.level = -11
#rt.prio = 88
rt.prio = 65
#rt.time.soft = -1
#rt.time.hard = -1
}
flags = [ ifexists nofail ]
}
{ name = libpipewire-module-protocol-native }
{ name = libpipewire-module-client-node }
{ name = libpipewire-module-adapter }
{ name = libpipewire-module-metadata }
{ name = libpipewire-module-protocol-pulse
args = {
# contents of pulse.properties can also be placed here
# to have config per server.
}
}
]
# Extra scripts can be started here. Setup in default.pa can be moved in
# a script or in pulse.cmd below
context.exec = [
{ path = "/bin/chgrp" args = "libvirt-shared /tmp/pulse" }
#{ path = "pactl" args = "load-module module-always-sink" }
#{ path = "pactl" args = "upload-sample my-sample.wav my-sample" }
#{ path = "/usr/bin/sh" args = "~/.config/pipewire/default.pw" }
]
# Extra commands can be executed here.
# load-module : loads a module with args and flags
# args = "<module-name> <module-args>"
# ( flags = [ nofail ] )
pulse.cmd = [
{ cmd = "load-module" args = "module-always-sink" flags = [ ] }
#{ cmd = "load-module" args = "module-switch-on-connect" }
#{ cmd = "load-module" args = "module-gsettings" flags = [ nofail ] }
]
stream.properties = {
#node.latency = 1024/48000
#node.autoconnect = true
#resample.quality = 4
#channelmix.normalize = false
#channelmix.mix-lfe = true
#channelmix.upmix = true
#channelmix.upmix-method = psd # none, simple
#channelmix.lfe-cutoff = 150
#channelmix.fc-cutoff = 12000
#channelmix.rear-delay = 12.0
#channelmix.stereo-widen = 0.0
#channelmix.hilbert-taps = 0
#dither.noise = 0
}
pulse.properties = {
# the addresses this server listens on
server.address = [
"unix:native"
"unix:/tmp/pulse"
#"unix:/tmp/something" # absolute paths may be used
#"tcp:4713" # IPv4 and IPv6 on all addresses
#"tcp:[::]:9999" # IPv6 on all addresses
#"tcp:127.0.0.1:8888" # IPv4 on a single address
#
#{ address = "tcp:4713" # address
# max-clients = 64 # maximum number of clients
# listen-backlog = 32 # backlog in the server listen queue
# client.access = "restricted" # permissions for clients
#}
]
#server.dbus-name = "org.pulseaudio.Server"
#pulse.min.req = 128/48000 # 2.7ms
#pulse.default.req = 960/48000 # 20 milliseconds
#pulse.min.frag = 128/48000 # 2.7ms
#pulse.default.frag = 96000/48000 # 2 seconds
#pulse.default.tlength = 96000/48000 # 2 seconds
#pulse.min.quantum = 128/48000 # 2.7ms
#pulse.idle.timeout = 0 # don't pause after underruns
#pulse.default.format = F32
#pulse.default.position = [ FL FR ]
# These overrides are only applied when running in a vm.
vm.overrides = {
pulse.min.quantum = 1024/48000 # 22ms
}
}
# client/stream specific properties
pulse.rules = [
{
matches = [
{
# all keys must match the value. ! negates. ~ starts regex.
#client.name = "Firefox"
#application.process.binary = "teams"
#application.name = "~speech-dispatcher.*"
}
]
actions = {
update-props = {
#node.latency = 512/48000
}
# Possible quirks:"
# force-s16-info forces sink and source info as S16 format
# remove-capture-dont-move removes the capture DONT_MOVE flag
# block-source-volume blocks updates to source volume
# block-sink-volume blocks updates to sink volume
#quirks = [ ]
}
}
{
# skype does not want to use devices that don't have an S16 sample format.
matches = [
{ application.process.binary = "teams" }
{ application.process.binary = "teams-insiders" }
{ application.process.binary = "skypeforlinux" }
]
actions = { quirks = [ force-s16-info ] }
}
{
# firefox marks the capture streams as don't move and then they
# can't be moved with pavucontrol or other tools.
matches = [ { application.process.binary = "firefox" } ]
actions = { quirks = [ remove-capture-dont-move ] }
}
{
# speech dispatcher asks for too small latency and then underruns.
matches = [ { application.name = "~speech-dispatcher.*" } ]
actions = {
update-props = {
pulse.min.req = 512/48000 # 10.6ms
pulse.min.quantum = 512/48000 # 10.6ms
pulse.idle.timeout = 5 # pause after 5 seconds of underrun
}
}
}
#{
# matches = [ { application.process.binary = "Discord" } ]
# actions = { quirks = [ block-source-volume ] }
#}
]
Reload settings
- Restart pipewire and pipewire-pulse to reload settings
systemctl restart --user pipewire.service pipewire-pulse.service
- Add relevant xml to GUEST configuration.
<devices>
<sound ...>
<audio id="1"/> <!-- important-->
...
</sound>
<audio id="1" type="pulseaudio" serverName="/tmp/pulse"/>
...
<devices>