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Sun, 27 Jul 2025 23:18:45 -0700 (PDT) Received: from [10.138.10.6] ([89.187.178.201]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7e64387e2a3sm265977985a.60.2025.07.27.23.18.44 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 27 Jul 2025 23:18:45 -0700 (PDT) Message-ID: <949e8201-929e-4dd7-b1e7-7cb673314dcd@gmail.com> Date: Mon, 28 Jul 2025 02:18:31 -0400 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v7 2/2] img/app: Run PipeWire and WirePlumber in the VMs From: Demi Marie Obenour To: Spectrum OS Development References: <263f81f2-9e86-4bb1-be80-41f7731a9a63@gmail.com> <40464bdd-6326-4521-9ccd-bb5cf31439a1@gmail.com> Content-Language: en-US Autocrypt: addr=demiobenour@gmail.com; keydata= xsFNBFp+A0oBEADffj6anl9/BHhUSxGTICeVl2tob7hPDdhHNgPR4C8xlYt5q49yB+l2nipd aq+4Gk6FZfqC825TKl7eRpUjMriwle4r3R0ydSIGcy4M6eb0IcxmuPYfbWpr/si88QKgyGSV Z7GeNW1UnzTdhYHuFlk8dBSmB1fzhEYEk0RcJqg4AKoq6/3/UorR+FaSuVwT7rqzGrTlscnT DlPWgRzrQ3jssesI7sZLm82E3pJSgaUoCdCOlL7MMPCJwI8JpPlBedRpe9tfVyfu3euTPLPx wcV3L/cfWPGSL4PofBtB8NUU6QwYiQ9Hzx4xOyn67zW73/G0Q2vPPRst8LBDqlxLjbtx/WLR 6h3nBc3eyuZ+q62HS1pJ5EvUT1vjyJ1ySrqtUXWQ4XlZyoEFUfpJxJoN0A9HCxmHGVckzTRl 5FMWo8TCniHynNXsBtDQbabt7aNEOaAJdE7to0AH3T/Bvwzcp0ZJtBk0EM6YeMLtotUut7h2 Bkg1b//r6bTBswMBXVJ5H44Qf0+eKeUg7whSC9qpYOzzrm7+0r9F5u3qF8ZTx55TJc2g656C 9a1P1MYVysLvkLvS4H+crmxA/i08Tc1h+x9RRvqba4lSzZ6/Tmt60DPM5Sc4R0nSm9BBff0N m0bSNRS8InXdO1Aq3362QKX2NOwcL5YaStwODNyZUqF7izjK4QARAQABzTxEZW1pIE1hcmll IE9iZW5vdXIgKGxvdmVyIG9mIGNvZGluZykgPGRlbWlvYmVub3VyQGdtYWlsLmNvbT7CwXgE EwECACIFAlp+A0oCGwMGCwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJELKItV//nCLBhr8Q AK/xrb4wyi71xII2hkFBpT59ObLN+32FQT7R3lbZRjVFjc6yMUjOb1H/hJVxx+yo5gsSj5LS 9AwggioUSrcUKldfA/PKKai2mzTlUDxTcF3vKx6iMXKA6AqwAw4B57ZEJoMM6egm57TV19kz PMc879NV2nc6+elaKl+/kbVeD3qvBuEwsTe2Do3HAAdrfUG/j9erwIk6gha/Hp9yZlCnPTX+ VK+xifQqt8RtMqS5R/S8z0msJMI/ajNU03kFjOpqrYziv6OZLJ5cuKb3bZU5aoaRQRDzkFIR 6aqtFLTohTo20QywXwRa39uFaOT/0YMpNyel0kdOszFOykTEGI2u+kja35g9TkH90kkBTG+a EWttIht0Hy6YFmwjcAxisSakBuHnHuMSOiyRQLu43ej2+mDWgItLZ48Mu0C3IG1seeQDjEYP tqvyZ6bGkf2Vj+L6wLoLLIhRZxQOedqArIk/Sb2SzQYuxN44IDRt+3ZcDqsPppoKcxSyd1Ny 2tpvjYJXlfKmOYLhTWs8nwlAlSHX/c/jz/ywwf7eSvGknToo1Y0VpRtoxMaKW1nvH0OeCSVJ itfRP7YbiRVc2aNqWPCSgtqHAuVraBRbAFLKh9d2rKFB3BmynTUpc1BQLJP8+D5oNyb8Ts4x Xd3iV/uD8JLGJfYZIR7oGWFLP4uZ3tkneDfYzsFNBFp+A0oBEAC9ynZI9LU+uJkMeEJeJyQ/ 8VFkCJQPQZEsIGzOTlPnwvVna0AS86n2Z+rK7R/usYs5iJCZ55/JISWd8xD57ue0eB47bcJv VqGlObI2DEG8TwaW0O0duRhDgzMEL4t1KdRAepIESBEA/iPpI4gfUbVEIEQuqdqQyO4GAe+M kD0Hy5JH/0qgFmbaSegNTdQg5iqYjRZ3ttiswalql1/iSyv1WYeC1OAs+2BLOAT2NEggSiVO txEfgewsQtCWi8H1SoirakIfo45Hz0tk/Ad9ZWh2PvOGt97Ka85o4TLJxgJJqGEnqcFUZnJJ riwoaRIS8N2C8/nEM53jb1sH0gYddMU3QxY7dYNLIUrRKQeNkF30dK7V6JRH7pleRlf+wQcN fRAIUrNlatj9TxwivQrKnC9aIFFHEy/0mAgtrQShcMRmMgVlRoOA5B8RTulRLCmkafvwuhs6 dCxN0GNAORIVVFxjx9Vn7OqYPgwiofZ6SbEl0hgPyWBQvE85klFLZLoj7p+joDY1XNQztmfA rnJ9x+YV4igjWImINAZSlmEcYtd+xy3Li/8oeYDAqrsnrOjb+WvGhCykJk4urBog2LNtcyCj kTs7F+WeXGUo0NDhbd3Z6AyFfqeF7uJ3D5hlpX2nI9no/ugPrrTVoVZAgrrnNz0iZG2DVx46 x913pVKHl5mlYQARAQABwsFfBBgBAgAJBQJafgNKAhsMAAoJELKItV//nCLBwNIP/AiIHE8b oIqReFQyaMzxq6lE4YZCZNj65B/nkDOvodSiwfwjjVVE2V3iEzxMHbgyTCGA67+Bo/d5aQGj gn0TPtsGzelyQHipaUzEyrsceUGWYoKXYyVWKEfyh0cDfnd9diAm3VeNqchtcMpoehETH8fr RHnJdBcjf112PzQSdKC6kqU0Q196c4Vp5HDOQfNiDnTf7gZSj0BraHOByy9LEDCLhQiCmr+2 E0rW4tBtDAn2HkT9uf32ZGqJCn1O+2uVfFhGu6vPE5qkqrbSE8TG+03H8ecU2q50zgHWPdHM OBvy3EhzfAh2VmOSTcRK+tSUe/u3wdLRDPwv/DTzGI36Kgky9MsDC5gpIwNbOJP2G/q1wT1o Gkw4IXfWv2ufWiXqJ+k7HEi2N1sree7Dy9KBCqb+ca1vFhYPDJfhP75I/VnzHVssZ/rYZ9+5 1yDoUABoNdJNSGUYl+Yh9Pw9pE3Kt4EFzUlFZWbE4xKL/NPno+z4J9aWemLLszcYz/u3XnbO vUSQHSrmfOzX3cV4yfmjM5lewgSstoxGyTx2M8enslgdXhPthZlDnTnOT+C+OTsh8+m5tos8 HQjaPM01MKBiAqdPgksm1wu2DrrwUi6ChRVTUBcj6+/9IJ81H2P2gJk3Ls3AVIxIffLoY34E +MYSfkEjBz0E8CLOcAw7JIwAaeBT In-Reply-To: <40464bdd-6326-4521-9ccd-bb5cf31439a1@gmail.com> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="------------fP9E5Rj0WvBA8M7V2YyQxYYr" Message-ID-Hash: HKBJQTOEQREKT3J7PIZ26SYY7PAN5XYE X-Message-ID-Hash: HKBJQTOEQREKT3J7PIZ26SYY7PAN5XYE X-MailFrom: demiobenour@gmail.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; header-match-devel.spectrum-os.org-0; header-match-devel.spectrum-os.org-1; header-match-devel.spectrum-os.org-2; header-match-devel.spectrum-os.org-3; header-match-devel.spectrum-os.org-4; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: Alyssa Ross X-Mailman-Version: 3.3.9 Precedence: list List-Id: Patches and low-level development discussion Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --------------fP9E5Rj0WvBA8M7V2YyQxYYr Content-Type: multipart/mixed; boundary="------------96eZqyPRXoccDmOjSmBWX6v8"; protected-headers="v1" From: Demi Marie Obenour To: Spectrum OS Development Cc: Alyssa Ross Message-ID: <949e8201-929e-4dd7-b1e7-7cb673314dcd@gmail.com> Subject: Re: [PATCH v7 2/2] img/app: Run PipeWire and WirePlumber in the VMs References: <263f81f2-9e86-4bb1-be80-41f7731a9a63@gmail.com> <40464bdd-6326-4521-9ccd-bb5cf31439a1@gmail.com> In-Reply-To: <40464bdd-6326-4521-9ccd-bb5cf31439a1@gmail.com> --------------96eZqyPRXoccDmOjSmBWX6v8 Content-Type: multipart/mixed; boundary="------------Yxiaxjr0KPkUHFTG7cXvw1Go" --------------Yxiaxjr0KPkUHFTG7cXvw1Go Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On 7/28/25 02:03, Demi Marie Obenour wrote: > WirePlumber is completely overkill as a session manager here, and > ideally a trivial session manager would be used instead. PipeWire is > configured to listen on the PulseAudio socket, so PulseAudio > compatibility works. pw-record and pw-play both work, and if PulseAudi= o > is installed paplay and parecord also work. This does install a lot of= > unnecessary files into the VMs, which will hopefully be removed > later as part of a debloating effort. >=20 > If WirePlumber is allowed to enable monitor nodes for the ALSA output > device, WirePlumber prefers the monitor over the ALSA input device [1].= > This breaks audio recording. To work around this, set > node.features.audio.monitor-ports to false. >=20 > Only run-qemu has had a virtio-sound device added, as crosvm and Cloud > Hypervisor require a virtio-user sound device and that is more complex > to set up. >=20 > [1]: https://gitlab.freedesktop.org/pipewire/wireplumber/-/issues/829 >=20 > Signed-off-by: Demi Marie Obenour > --- > Changes since v6: >=20 > - Fix spelling errors in commit message. > - Sort lines in Makefile. > - Don't disable support.settings as a comment in wireplumber.conf says > to not do that. Instead, tell WirePlumber to not create monitor > nodes. This is a workaround for WirePlumber bug 829. > - Don't remove "-cpu host" from make run-qemu's QEMU command line. Thi= s > was needed for local testing with KVM disabled but should not have > been submitted upstream. Hardware with KVM support should be used > instead. >=20 > The copyright notice on the WirePlumber drop-in was kept because it is > based on fragments in the upstream config file and because when in doub= t, > keeping the copyright notice is always safer. >=20 > Changes since v5: >=20 > - Remove "directories" service in favor of creating the directories fro= m > rc.init. > - Use a drop-in configuration file for WirePlumber instead of overridin= g > wireplumber.conf. This should be more robust to future WirePlumber > changes. > --- > img/app/Makefile | 16 +- > img/app/default.nix | 3 + > img/app/etc/mdev.conf | 1 + > img/app/etc/pipewire/pipewire.conf | 199 ++++++++++++++++++= > .../etc/s6-rc/app/dependencies.d/wireplumber | 0 > .../etc/s6-rc/pipewire/dependencies.d/dbus | 0 > img/app/etc/s6-rc/pipewire/notification-fd | 1 + > .../s6-rc/pipewire/notification-fd.license | 2 + > img/app/etc/s6-rc/pipewire/run | 23 ++ > img/app/etc/s6-rc/pipewire/type | 1 + > img/app/etc/s6-rc/pipewire/type.license | 2 + > .../etc/s6-rc/wireplumber/dependencies.d/dbus | 0 > .../s6-rc/wireplumber/dependencies.d/pipewire | 0 > img/app/etc/s6-rc/wireplumber/run | 4 + > img/app/etc/s6-rc/wireplumber/type | 1 + > img/app/etc/s6-rc/wireplumber/type.license | 2 + > .../wireplumber.conf.d/99_spectrum.conf | 45 ++++ > 17 files changed, 298 insertions(+), 2 deletions(-) > create mode 100644 img/app/etc/pipewire/pipewire.conf > create mode 100644 img/app/etc/s6-rc/app/dependencies.d/wireplumber > create mode 100644 img/app/etc/s6-rc/pipewire/dependencies.d/dbus > create mode 100644 img/app/etc/s6-rc/pipewire/notification-fd > create mode 100644 img/app/etc/s6-rc/pipewire/notification-fd.license > create mode 100644 img/app/etc/s6-rc/pipewire/run > create mode 100644 img/app/etc/s6-rc/pipewire/type > create mode 100644 img/app/etc/s6-rc/pipewire/type.license > create mode 100644 img/app/etc/s6-rc/wireplumber/dependencies.d/dbus > create mode 100644 img/app/etc/s6-rc/wireplumber/dependencies.d/pipewi= re > create mode 100644 img/app/etc/s6-rc/wireplumber/run > create mode 100644 img/app/etc/s6-rc/wireplumber/type > create mode 100644 img/app/etc/s6-rc/wireplumber/type.license > create mode 100644 img/app/etc/wireplumber/wireplumber.conf.d/99_spect= rum.conf >=20 > diff --git a/img/app/Makefile b/img/app/Makefile > index 4b4d64f81d99a01eebe777f3737fef813ebb6d3f..c2186c9eba52207dfaa94f9= ac8364a7dba844c34 100644 > --- a/img/app/Makefile > +++ b/img/app/Makefile > @@ -40,6 +40,7 @@ VM_FILES =3D \ > etc/mdev/virtiofs \ > etc/mdev/wait \ > etc/passwd \ > + etc/pipewire/pipewire.conf \ > etc/resolv.conf \ > etc/s6-linux-init/env/DBUS_SESSION_BUS_ADDRESS \ > etc/s6-linux-init/env/DISPLAY \ > @@ -47,13 +48,15 @@ VM_FILES =3D \ > etc/s6-linux-init/env/NIX_XDG_DESKTOP_PORTAL_DIR \ > etc/s6-linux-init/env/WAYLAND_DISPLAY \ > etc/s6-linux-init/env/XDG_RUNTIME_DIR \ > + etc/s6-linux-init/run-image/service/getty-hvc0/run \ > etc/s6-linux-init/run-image/service/s6-linux-init-shutdownd/notificat= ion-fd \ > etc/s6-linux-init/run-image/service/s6-linux-init-shutdownd/run \ > - etc/s6-linux-init/run-image/service/getty-hvc0/run \ > etc/s6-linux-init/scripts/rc.init \ > etc/s6-linux-init/scripts/rc.shutdown \ > etc/s6-linux-init/scripts/rc.shutdown.final \ > + etc/wireplumber/wireplumber.conf.d/99_spectrum.conf \ > etc/xdg/xdg-desktop-portal/portals.conf > + > VM_DIRS =3D dev run proc sys tmp \ > etc/s6-linux-init/run-image/service \ > etc/s6-linux-init/run-image/user \ > @@ -85,6 +88,7 @@ build/rootfs.erofs: ../../scripts/make-erofs.sh $(PAC= KAGES_FILE) $(VM_FILES) $(V > VM_S6_RC_FILES =3D \ > etc/s6-rc/app/dependencies.d/dbus \ > etc/s6-rc/app/dependencies.d/wayland-proxy-virtwl \ > + etc/s6-rc/app/dependencies.d/wireplumber \ > etc/s6-rc/app/run \ > etc/s6-rc/app/type \ > etc/s6-rc/dbus/notification-fd \ > @@ -98,9 +102,16 @@ VM_S6_RC_FILES =3D \ > etc/s6-rc/mdevd/type \ > etc/s6-rc/ok-all/contents \ > etc/s6-rc/ok-all/type \ > + etc/s6-rc/pipewire/notification-fd \ > + etc/s6-rc/pipewire/run \ > + etc/s6-rc/pipewire/type \ > etc/s6-rc/wayland-proxy-virtwl/notification-fd \ > etc/s6-rc/wayland-proxy-virtwl/run \ > - etc/s6-rc/wayland-proxy-virtwl/type > + etc/s6-rc/wayland-proxy-virtwl/type \ > + etc/s6-rc/wireplumber/dependencies.d/dbus \ > + etc/s6-rc/wireplumber/dependencies.d/pipewire \ > + etc/s6-rc/wireplumber/run \ > + etc/s6-rc/wireplumber/type > =20 > build/etc/s6-rc: $(VM_S6_RC_FILES) > mkdir -p $$(dirname $@) > @@ -147,6 +158,7 @@ run-qemu: $(imgdir)/appvm/blk/root.img start-vhost-= user-net start-virtiofsd > -chardev socket,id=3Dvirtiofsd,path=3Dbuild/virtiofsd.sock \ > -device vhost-user-fs-pci,chardev=3Dvirtiofsd,tag=3Dvirtiofs0 \ > -device virtio-gpu-rutabaga-pci,cross-domain=3Don,hostmem=3D8G \ > + -audio driver=3Dpipewire,model=3Dvirtio \ > -object memory-backend-memfd,id=3Dmem,size=3D256M,share=3Don \ > -numa node,memdev=3Dmem \ > -device vhost-vsock-pci,guest-cid=3D3 \ > diff --git a/img/app/default.nix b/img/app/default.nix > index 740643ac41f6473cdb6f6b0fd1f5f47f4493240d..d3eed1f0accdc8968d1ba5b= dec74ab597789082f 100644 > --- a/img/app/default.nix > +++ b/img/app/default.nix > @@ -48,6 +48,9 @@ let > pkgs.xwayland > pkgs.xdg-desktop-portal > pkgs.xdg-desktop-portal-gtk > + # Depends on pulseaudio libs > + pkgs.pipewire > + pkgs.wireplumber > ]; > })).fhsenv; > in > diff --git a/img/app/etc/mdev.conf b/img/app/etc/mdev.conf > index f2101e1f683c49808358b25520080c59ed2afa8e..0e4a1a088522c05da9e0ce1= 5fe135c40d6cf3064 100644 > --- a/img/app/etc/mdev.conf > +++ b/img/app/etc/mdev.conf > @@ -5,3 +5,4 @@ > $INTERFACE=3D.* 0:0 660 ! +/etc/mdev/iface > $MODALIAS=3Dvirtio:d0000001Av.* 0:0 660 ! +/etc/mdev/virtiofs > dri/card0 0:0 660 +background { /etc/mdev/listen card0 } > +snd/controlC0 0:0 660 +background { /etc/mdev/listen controlC0 } > diff --git a/img/app/etc/pipewire/pipewire.conf b/img/app/etc/pipewire/= pipewire.conf > new file mode 100644 > index 0000000000000000000000000000000000000000..e5a413a409f46e7fe176102= bbd6780db14f85dba > --- /dev/null > +++ b/img/app/etc/pipewire/pipewire.conf > @@ -0,0 +1,199 @@ > +# SPDX-License-Identifier: MIT > + > +# Copyright =C2=A9 2018 Wim Taymans > +# Copyright =C2=A9 2025 Demi Marie Obenour > +# > +# Permission is hereby granted, free of charge, to any person obtainin= g a > +# copy of this software and associated documentation files (the "Softw= are"), > +# to deal in the Software without restriction, including without limit= ation > +# the rights to use, copy, modify, merge, publish, distribute, sublice= nse, > +# and/or sell copies of the Software, and to permit persons to whom th= e > +# Software is furnished to do so, subject to the following conditions:= > +# > +# The above copyright notice and this permission notice (including the= next > +# paragraph) shall be included in all copies or substantial portions o= f the > +# Software. > +# > +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPR= ESS OR > +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL= ITY, > +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT S= HALL > +# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR= OTHER > +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARIS= ING > +# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER > +# DEALINGS IN THE SOFTWARE. > + > +# This file is based on the upstream default configuration. This can = be > +# found in upstream GitLab or in any distro with a recent version of P= ipeWire. > +# The following changes have been made: > +# > +# - Conditions that have known values in Spectrum VMs are omitted. > +# - Modules for hardware devices Spectrum VMs don't have are not loade= d. > +# - The PulseAudio emulation server is loaded. > +# - Settings for VMs are applied unconditionally. > +# - Most comments in the upstream files have been removed. > +# - Device nodes for virtio-sound devices have been added. > +# - Integration with udev and logind is removed. > +context.properties =3D { > + # Upstream defaults. > + link.max-buffers =3D 16 > + core.daemon =3D true > + core.name =3D pipewire-0 > + # Account for running in a VM > + default.clock.min-quantum =3D 1024 > +} > + > +# Upstream defaults, with support for AVB, V4L2, libcamera > +# bluez, Vulkan, JACK, and video conversion omitted. > +context.spa-libs =3D { > + audio.convert.* =3D audioconvert/libspa-audioconvert > + api.alsa.* =3D alsa/libspa-alsa > + support.* =3D support/libspa-support > +} > + > +context.modules =3D [ > + # Upstream defaults > + { name =3D libpipewire-module-rt > + args =3D { nice.level =3D -11, rt.prio =3D 88 } > + } > + { name =3D libpipewire-module-protocol-native } > + { name =3D libpipewire-module-metadata } > + { name =3D libpipewire-module-spa-device-factory } > + { name =3D libpipewire-module-spa-node-factory } > + { name =3D libpipewire-module-client-node } > + { name =3D libpipewire-module-access } > + { name =3D libpipewire-module-client-device } > + { name =3D libpipewire-module-portal } > + { name =3D libpipewire-module-adapter } > + { name =3D libpipewire-module-link-factory } > + { name =3D libpipewire-module-session-manager } > + > + # Load the PulseAudio server into PipeWire. > + # This avoids needing a separate pipewire-pulse > + # process. The args are those used when running > + # in a VM. > + { name =3D libpipewire-module-protocol-pulse > + args =3D { > + server.address =3D [ "unix:native" ] > + pulse.min.quantum =3D 1024/48000 > + } > + } > +] > + > +context.objects =3D [ > + # Upstream defaults > + { factory =3D spa-node-factory > + args =3D { > + factory.name =3D support.node.driver > + node.name =3D Dummy-Driver > + node.group =3D pipewire.dummy > + node.sync-group =3D sync.dummy > + priority.driver =3D 200000 > + } > + } > + { factory =3D spa-node-factory > + args =3D { > + factory.name =3D support.node.driver > + node.name =3D Freewheel-Driver > + priority.driver =3D 190000 > + node.group =3D pipewire.freewheel > + node.sync-group =3D sync.dummy > + node.freewheel =3D true > + } > + } > + > + # Spectrum doesn't use udev, so device nodes must be created stati= cally. > + # Creating them with pw-cli works as long as pw-cli is running, bu= t > + # the nodes are destroyed when pw-cli exits. > + { factory =3D adapter > + args =3D { > + alsa.card =3D 0, > + alsa.card_name =3D "VirtIO SoundCard" > + alsa.device =3D 0 > + alsa.driver_name =3D "virtio_snd" > + alsa.id =3D "SoundCard" > + alsa.long_card_name =3D "VirtIO SoundCard at pci/0000:0= 0:01.0/virtio0" > + alsa.name =3D "VirtIO SoundCard" > + alsa.subdevice =3D 0 > + alsa.subdevice_name =3D "subdevice #0" > + api.alsa.card.longname =3D "VirtIO SoundCard at pci/0000:0= 0:01.0/virtio0" > + api.alsa.card.name =3D "VirtIO SoundCard" > + api.alsa.headroom =3D 0 > + api.alsa.path =3D "hw:0,0,0" > + api.alsa.pcm.card =3D 0, > + api.alsa.pcm.stream =3D "playback" > + audio.allowed-rates =3D [ ] > + audio.channels =3D 2 > + audio.format =3D "S32" > + audio.position =3D "FL,FR" > + audio.rate =3D 48000 > + factory.name =3D "api.alsa.pcm.sink" > + media.class =3D "Audio/Sink" > + node.name =3D "alsa_output.pci-0000_00_01.0.a= nalog-stereo" > + node.suspend-on-idle =3D true > + } > + } > + { factory =3D adapter > + args =3D { > + alsa.card =3D 0, > + alsa.card_name =3D "VirtIO SoundCard" > + alsa.device =3D 0 > + alsa.driver_name =3D "virtio_snd" > + alsa.id =3D "SoundCard" > + alsa.long_card_name =3D "VirtIO SoundCard at pci/0000:0= 0:01.0/virtio0" > + alsa.name =3D "VirtIO SoundCard" > + alsa.subdevice =3D 0 > + alsa.subdevice_name =3D "subdevice #0" > + api.alsa.card.longname =3D "VirtIO SoundCard at pci/0000:0= 0:01.0/virtio0" > + api.alsa.card.name =3D "VirtIO SoundCard" > + api.alsa.headroom =3D 0 > + api.alsa.path =3D "hw:0,0,0" > + api.alsa.pcm.card =3D 0, > + api.alsa.pcm.stream =3D "capture" > + audio.allowed-rates =3D [ ] > + audio.channels =3D 2 > + audio.format =3D "S32" > + audio.position =3D "FL,FR" > + audio.rate =3D 48000 > + factory.name =3D "api.alsa.pcm.source" > + media.class =3D "Audio/Source" > + node.name =3D "alsa_input.pci-0000_00_01.0.an= alog-stereo" > + node.suspend-on-idle =3D true > + } > + } > +] > + > +# Load the modules that are in the default config *except* > +# for ones whose job is to maintain state. > +pulse.cmd =3D [ > + { cmd =3D "load-module" args =3D "module-always-sink" flags =3D [ = ] } > + { cmd =3D "load-module" args =3D "module-device-manager" flags =3D= [ ] } > +] > + > +# More default stuff. > +pulse.rules =3D [ > + { > + matches =3D [ > + { application.process.binary =3D "teams" } > + { application.process.binary =3D "teams-insiders" } > + { application.process.binary =3D "teams-for-linux" } > + { application.process.binary =3D "skypeforlinux" } > + ] > + actions =3D { quirks =3D [ force-s16-info ] } > + } > + { > + matches =3D [ { application.process.binary =3D "firefox" } ] > + actions =3D { quirks =3D [ remove-capture-dont-move ] } > + } > + { > + matches =3D [ { application.name =3D "~speech-dispatcher.*" } = ] > + actions =3D { > + update-props =3D { > + pulse.min.req =3D 512/48000 > + pulse.min.quantum =3D 512/48000 > + pulse.idle.timeout =3D 5 > + } > + } > + } > +] > + > +context.exec =3D [] > diff --git a/img/app/etc/s6-rc/app/dependencies.d/wireplumber b/img/app= /etc/s6-rc/app/dependencies.d/wireplumber > new file mode 100644 > index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29a= e775ad8c2e48c5391 > diff --git a/img/app/etc/s6-rc/pipewire/dependencies.d/dbus b/img/app/e= tc/s6-rc/pipewire/dependencies.d/dbus > new file mode 100644 > index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29a= e775ad8c2e48c5391 > diff --git a/img/app/etc/s6-rc/pipewire/notification-fd b/img/app/etc/s= 6-rc/pipewire/notification-fd > new file mode 100644 > index 0000000000000000000000000000000000000000..7ed6ff82de6bcc2a78243fc= 9c54d3ef5ac14da69 > --- /dev/null > +++ b/img/app/etc/s6-rc/pipewire/notification-fd > @@ -0,0 +1 @@ > +5 > diff --git a/img/app/etc/s6-rc/pipewire/notification-fd.license b/img/a= pp/etc/s6-rc/pipewire/notification-fd.license > new file mode 100644 > index 0000000000000000000000000000000000000000..c4a0586a407fe14c3e08557= 49a7524ac3871dda4 > --- /dev/null > +++ b/img/app/etc/s6-rc/pipewire/notification-fd.license > @@ -0,0 +1,2 @@ > +SPDX-License-Identifier: CC0-1.0 > +SPDX-FileCopyrightText: 2025 Demi Marie Obenour > diff --git a/img/app/etc/s6-rc/pipewire/run b/img/app/etc/s6-rc/pipewir= e/run > new file mode 100644 > index 0000000000000000000000000000000000000000..c5cf090fb4779e0f3ede178= 2ada5c95ce5b25702 > --- /dev/null > +++ b/img/app/etc/s6-rc/pipewire/run > @@ -0,0 +1,23 @@ > +#!/bin/execlineb -P > +# SPDX-License-Identifier: EUPL-1.2+ > +# SPDX-FileCopyrightText: 2023-2024 Alyssa Ross > +# SPDX-FileCopyrightText: 2025 Demi Marie Obenour > + > +s6-ipcserver-socketbinder -B /run/user/0/pipewire-0 > +fdmove -c 3 0 > + > +s6-ipcserver-socketbinder -B /run/user/0/pipewire-0-manager > +fdmove -c 4 0 > + > +redirfd -r 0 /dev/null > + > +# Wait for sound devices to be available > +if { /etc/mdev/wait controlC0 } > + > +# Notify readiness. > +if { fdmove 1 5 echo } > +fdclose 5 > + > +export LISTEN_FDS 2 > +getpid LISTEN_PID > +pipewire > diff --git a/img/app/etc/s6-rc/pipewire/type b/img/app/etc/s6-rc/pipewi= re/type > new file mode 100644 > index 0000000000000000000000000000000000000000..5883cff0cd1514b2836f4ff= a39fdac769a5213cb > --- /dev/null > +++ b/img/app/etc/s6-rc/pipewire/type > @@ -0,0 +1 @@ > +longrun > diff --git a/img/app/etc/s6-rc/pipewire/type.license b/img/app/etc/s6-r= c/pipewire/type.license > new file mode 100644 > index 0000000000000000000000000000000000000000..c4a0586a407fe14c3e08557= 49a7524ac3871dda4 > --- /dev/null > +++ b/img/app/etc/s6-rc/pipewire/type.license > @@ -0,0 +1,2 @@ > +SPDX-License-Identifier: CC0-1.0 > +SPDX-FileCopyrightText: 2025 Demi Marie Obenour > diff --git a/img/app/etc/s6-rc/wireplumber/dependencies.d/dbus b/img/ap= p/etc/s6-rc/wireplumber/dependencies.d/dbus > new file mode 100644 > index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29a= e775ad8c2e48c5391 > diff --git a/img/app/etc/s6-rc/wireplumber/dependencies.d/pipewire b/im= g/app/etc/s6-rc/wireplumber/dependencies.d/pipewire > new file mode 100644 > index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29a= e775ad8c2e48c5391 > diff --git a/img/app/etc/s6-rc/wireplumber/run b/img/app/etc/s6-rc/wire= plumber/run > new file mode 100644 > index 0000000000000000000000000000000000000000..d58f1971c7387c896256a91= ad0c92386a02fd9e2 > --- /dev/null > +++ b/img/app/etc/s6-rc/wireplumber/run > @@ -0,0 +1,4 @@ > +#!/bin/execlineb -P > +# SPDX-License-Identifier: EUPL-1.2+ > +# SPDX-FileCopyrightText: 2025 Demi Marie Obenour > +wireplumber --profile spectrum > diff --git a/img/app/etc/s6-rc/wireplumber/type b/img/app/etc/s6-rc/wir= eplumber/type > new file mode 100644 > index 0000000000000000000000000000000000000000..5883cff0cd1514b2836f4ff= a39fdac769a5213cb > --- /dev/null > +++ b/img/app/etc/s6-rc/wireplumber/type > @@ -0,0 +1 @@ > +longrun > diff --git a/img/app/etc/s6-rc/wireplumber/type.license b/img/app/etc/s= 6-rc/wireplumber/type.license > new file mode 100644 > index 0000000000000000000000000000000000000000..c4a0586a407fe14c3e08557= 49a7524ac3871dda4 > --- /dev/null > +++ b/img/app/etc/s6-rc/wireplumber/type.license > @@ -0,0 +1,2 @@ > +SPDX-License-Identifier: CC0-1.0 > +SPDX-FileCopyrightText: 2025 Demi Marie Obenour > diff --git a/img/app/etc/wireplumber/wireplumber.conf.d/99_spectrum.con= f b/img/app/etc/wireplumber/wireplumber.conf.d/99_spectrum.conf > new file mode 100644 > index 0000000000000000000000000000000000000000..75672bc4e2acc90dfc48190= 5e6ce71615977dc0d > --- /dev/null > +++ b/img/app/etc/wireplumber/wireplumber.conf.d/99_spectrum.conf > @@ -0,0 +1,45 @@ > +# SPDX-License-Identifier: MIT > +# SPDX-FileCopyrightText: 2019-2021 Collabora Ltd. > +# SPDX-FileCopyrightText: 2025 Demi Marie Obenour > + > +# Copyright =C2=A9 2019-2021 Collabora Ltd. > +# > +# Permission is hereby granted, free of charge, to any person obtainin= g a > +# copy of this software and associated documentation files (the "Softw= are"), > +# to deal in the Software without restriction, including without limit= ation > +# the rights to use, copy, modify, merge, publish, distribute, sublice= nse, > +# and/or sell copies of the Software, and to permit persons to whom th= e > +# Software is furnished to do so, subject to the following conditions:= > +# > +# The above copyright notice and this permission notice (including the= next > +# paragraph) shall be included in all copies or substantial portions o= f the > +# Software. > +# > +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPR= ESS OR > +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL= ITY, > +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT S= HALL > +# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR= OTHER > +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARIS= ING > +# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER > +# DEALINGS IN THE SOFTWARE. > + > +wireplumber.profiles =3D { > + spectrum =3D { > + # Spectrum VMs are essentially embedded systems, in that they are > + # not at all general-purpose. > + inherits =3D [ main-embedded ] > + # Disable video and Bluetooth > + hardware.video-capture =3D disabled > + hardware.bluetooth =3D disabled > + # Media Session is definitely not running > + check.no-media-session =3D disabled > + } > +} > + > +wireplumber.settings =3D { > + # Default to 100% sink volume. The host will adjust this as needed.= > + device.routes.default-sink-volume =3D 1.0 > + # Disable monitor ports so WirePlumber cannot select them: > + # https://gitlab.freedesktop.org/pipewire/wireplumber/-/issues/829 > + node.features.audio.monitor-ports =3D false > +} Patch v7 1/2 is fine, but this patch (and all of the previous PipeWire patches) have a bug: they do not set the priorities of the input and output device nodes. The result is that it is unspecified which one is selected as the graph driver by PipeWire, and it is also unspecified whether WirePlumber links an application to the source node or the monitor of the sink node. I'll send a v8 with a fixed pipewire.conf. 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