From: GitHub issues - edited <github@alsa-project.org>
To: alsa-devel@alsa-project.org
Subject: snd-loopback does not work
Date: Mon, 17 Nov 2025 00:43:40 +0100 (CET) [thread overview]
Message-ID: <1878a14f7bef0900-webhooks-bot@alsa-project.org> (raw)
In-Reply-To: <1878a14f7bdd3e00-webhooks-bot@alsa-project.org>
alsa-project/alsa-lib issue #482 was edited from Sameguyy:
```
$pactl list short sources
80 alsa_output.platform-snd_aloop.0.analog-stereo.monitor PipeWire s32le 2ch 48000Hz RUNNING
81 alsa_input.platform-snd_aloop.0.analog-stereo PipeWire s32le 2ch 48000Hz RUNNING
```
These are two interfaces that Pipewire automatically pulled in, and the sound goes into 3.0 and doesn't leave from 3.1
That is, I play a sound on hw:3.0 and when I try to read something from hw:3.1 I get silence
aplay\arecord records silence
$ uname -r
6.17.8-arch1-1 Wayland PipeWire gnome
```$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: PCH [HDA Intel PCH], device 0: ALC892 Analog [ALC892 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: PCH [HDA Intel PCH], device 1: ALC892 Digital [ALC892 Digital]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: DACX6 [DAC-X6], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 1: DACX6 [DAC-X6], device 1: USB Audio [USB Audio #1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: NVidia [HDA NVidia], device 3: HDMI 0 [SAMSUNG]
Subdevices: 0/1
Subdevice #0: subdevice #0
card 2: NVidia [HDA NVidia], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: NVidia [HDA NVidia], device 8: HDMI 2 [HDMI 2]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: NVidia [HDA NVidia], device 9: HDMI 3 [HDMI 3]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 3: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
card 3: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM]
Subdevices: 8/8
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
Subdevice #4: subdevice #4
Subdevice #5: subdevice #5
Subdevice #6: subdevice #6
Subdevice #7: subdevice #7
```
Issue URL : https://github.com/alsa-project/alsa-lib/issues/482
Repository URL: https://github.com/alsa-project/alsa-lib
next parent reply other threads:[~2025-11-16 23:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1878a14f7bdd3e00-webhooks-bot@alsa-project.org>
2025-11-16 23:43 ` GitHub issues - edited [this message]
[not found] <1878a1c25d983300-webhooks-bot@alsa-project.org>
2025-11-16 23:51 ` snd-loopback does not work GitHub issues - edited
[not found] <1878a0be96b49200-webhooks-bot@alsa-project.org>
2025-11-16 23:33 ` GitHub issues - edited
[not found] <1878a0b4e6b85200-webhooks-bot@alsa-project.org>
2025-11-16 23:32 ` GitHub issues - opened
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