Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: pulseaudio (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1883608
Title:
[USB-Audio - UMC204HD 192k, playback] Playback problem
Status in pulseaudio package in Ubuntu:
Confirmed
Bug description:
I want to split the 4.0 output into 2x2.0 outputs. This is my config
for /etc/pulse/default.pa
load-module module-remap-sink sink_name=behringera
sink_properties="device.description='Behringer Output A (1 and 2)'" remix=no
master=alsa_output.usb-BEHRINGER_UMC204HD_192k-00.analog-surround-40 channels=2
master_channel_map=front-left,front-right channel_map=left,right
load-module module-remap-sink sink_name=behringerb
sink_properties="device.description='Behringer Output B (3 and 4)'" remix=no
master=alsa_output.usb-BEHRINGER_UMC204HD_192k-00.analog-surround-40 channels=2
master_channel_map=rear-left,rear-right channel_map=left,right
I have tested this config on Ubuntu 18.04, Debian, Fedora 30, it works
on all of them. But does not work on Ubuntu 20.04, nor Fedora 32. Both
20.04 and f32 use version 13.99.1 of Pulseaudio, so I suspect the
problem to be with this version.
When I speak about A and B, I am referring to the device description
given in the 2 lines above, line 1 being A and line 2 being B.
What is happening on 20.04 and f32 is if I comment out A, then B will
work. If I comment out B, A will work, but both A and B are defined,
then only A will work. If B is defined first, and then A, something
else weird happens where A will work, but is sent out through B, and B
will work as expected.
A discussion on Reddit, another user has version 13.0 on NixOS and his
similar UMC404HD works fine. Here is a link to the info on Reddit:
https://www.reddit.com/r/linuxaudio/comments/fqmhbe/pulseaudio_and_multichannel_interfaces/ftkq7ov
I know this is probably a pulseaudio bug, but I could not figure out
how to submit a bug report to them.
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: alsa-base 1.0.25+dfsg-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.11-0ubuntu27.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: angus 5429 F.... pulseaudio
/dev/snd/pcmC0D0p: angus 5429 F...m pulseaudio
/dev/snd/controlC3: angus 5429 F.... pulseaudio
/dev/snd/controlC2: angus 5429 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Jun 15 23:14:49 2020
InstallationDate: Installed on 2020-04-25 (51 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
PackageArchitecture: all
SourcePackage: alsa-driver
Symptom: audio
Symptom_AlsaPlaybackTest: ALSA playback test through plughw:U192k successful
Symptom_Card: Family 17h (Models 00h-0fh) HD Audio Controller - HD-Audio
Generic
Symptom_PulsePlaybackTest: PulseAudio playback test successful
Symptom_Type: None of the above
Title: [USB-Audio - UMC204HD 192k, playback] Playback problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/21/2019
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 1.H0
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: X370 KRAIT GAMING (MS-7A33)
dmi.board.vendor: Micro-Star International Co., Ltd.
dmi.board.version: 1.0
dmi.chassis.asset.tag: To be filled by O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Micro-Star International Co., Ltd.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr1.H0:bd01/21/2019:svnMicro-StarInternationalCo.,Ltd.:pnMS-7A33:pvr1.0:rvnMicro-StarInternationalCo.,Ltd.:rnX370KRAITGAMING(MS-7A33):rvr1.0:cvnMicro-StarInternationalCo.,Ltd.:ct3:cvr1.0:
dmi.product.family: To be filled by O.E.M.
dmi.product.name: MS-7A33
dmi.product.sku: To be filled by O.E.M.
dmi.product.version: 1.0
dmi.sys.vendor: Micro-Star International Co., Ltd.
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