Ecosyste.ms: Awesome
An open API service indexing awesome lists of open source software.
https://github.com/kiosion/alsa-motu-m2
Information about using the MOTU M2 under Alsa on Linux
https://github.com/kiosion/alsa-motu-m2
alsa alsa-pcm audio linux linux-audio motu motu-m2 motu-soundcard pipewire
Last synced: about 2 months ago
JSON representation
Information about using the MOTU M2 under Alsa on Linux
- Host: GitHub
- URL: https://github.com/kiosion/alsa-motu-m2
- Owner: kiosion
- Created: 2022-08-04T17:51:30.000Z (over 2 years ago)
- Default Branch: main
- Last Pushed: 2023-07-13T22:04:22.000Z (over 1 year ago)
- Last Synced: 2024-07-30T19:53:46.765Z (6 months ago)
- Topics: alsa, alsa-pcm, audio, linux, linux-audio, motu, motu-m2, motu-soundcard, pipewire
- Homepage:
- Size: 7.81 KB
- Stars: 14
- Watchers: 4
- Forks: 1
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# alsa-motu-m2
Some info about using the MOTU M2 audio interface with alsa on Linux.
## Info
Issues with the M2 / M4 seem to be caused by a couple different issues -
- `alsa-lib` / `lib32-alsa-lib` / `alsa-ucm-conf` / `alsa-utils` > 1.27.1-1
- ~~A [kernel bug](https://bugzilla.kernel.org/show_bug.cgi?id=216500) present in verisons 5.19.8 and newer~~ ([now fixed](https://bugzilla.kernel.org/attachment.cgi?id=301839&action=edit))
- Another kernel bug, affecting card detection at boot, requiring a power-cycle to fix (I've had luck [increasing msleep from 2000 to 4000](https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/sound/usb/quirks.c?h=v5.15-rc1#n1128) to fix this)
These monkey-patch confs fix MOTU M2 / M4 audio issues specifically relating to the first point.
## Install
Downgrade alsa-lib, lib32-alsa-lib, & alsa-ucm-conf to 1.2.7.1-1
- downgrade ([github](https://github.com/archlinux-downgrade/downgrade) / [AUR](https://aur.archlinux.org/packages/downgrade))
Move src/MOTU/* to /usr/share/alsa/ucm2/USB-Audio/MOTU/*
```diff
/usr/share/alsa/ucm2/USB-Audio/MOTU/M4.conf
/usr/share/alsa/ucm2/USB-Audio/MOTU/M4-HiFi.conf
+/usr/share/alsa/ucm2/USB-Audio/MOTU/M2.conf
+/usr/share/alsa/ucm2/USB-Audio/MOTU/M2-HiFi.conf
```
Replace the existing /usr/share/alsa/ucm2/USB-Audio/USB-Audio.conf's MOTU M4 config with the updated config from src/USB-Audio.conf
```diff
@@ -67,1 +83,1 @@
-If.M4 {
- Condition {
- Type String
- Haystack "${CardComponents}"
- Needle "USB07fd:000b"
- }
- True.Define.ProfileName "MOTU/M4"
+If.Motu {
+ Condition {
+ Type String
+ Haystack "${CardComponents}"
+ Needle "USB07fd:000b"
+ }
+ True.If.M4 {
+ Condition {
+ Type String
+ Haystack "${CardLongName}"
+ Needle "MOTU M4"
+ }
+ True.Define.ProfileName "MOTU/M4"
+ False.Define.ProfileName "MOTU/M2"
+ }
}
```