MOTU Microbook IIc

[thesoundsplash]

I posted a draft fix on alsa-devel ML:
https://mailman.alsa-project.org/piperm ... 63797.html

Sorry, as I already told, I'm not an expert.

What is your fix doing? Adding support for microbook 2c in linux kernel?
Will this be merged in the next kernel releases?
Also in the post you said that

There are still issues with usb descriptors and clock validity checks,
so the card is quite noisy in the kernel logs.

What does it means? The only problems are in noisy log files? I mean, except logs, the sound card is correctly recognized and is correctly working on linux system with this fix?
Also I would like to compile a kernel with this fix if everything is working well. Would you raccomend this?

[puleglot]

Microbook IIc support will be in 5.7. Some notes:
- Only class compliant mode is currently supported. The device does not expose any mixer controls in this mode (so no direct monitoring and other useful features).
- 44.1 and 88.2 sample rates are somewhat unstable: sometimes the card generate random harsh noise for several seconds or silence on random output channels.

Update: I've fixed second issue. The fix will be in 5.7 or 5.8

[puleglot]

Also I would like to compile a kernel with this fix if everything is working well. Would you raccomend this?

The device works, but there are several issues (see my previous post). The final version of the patch is here:
https://git.kernel.org/pub/scm/linux/ke ... 04df042d9e
It should apply cleanly to 5.4 and newer.

[MARCO_1974]

Hi All,
I'm new user with Ubuntu 20.04.01 lts and in general with Linux. I've tried to install my Motu Microbook II, it's work properly with piano and guitar, without install any software like Cuemix or Cubase etc (since two weeks ago I've always used with windows). But it doesn't work for listen any files mp3 or youtube videos or moves....I'm trying to understand how to Linux works but it too difficult and in the same time I need to use my card Microbook to record and play Guitar.
Thanks in advance for your help and to following me.

[MARCO_1974]

just more details, now I've connected my motu microbook II by usb to my laptop, my lespauls with pod hd400 and by headphone i could listen very well.
In the same time I'm watching a jazz event live by Facebook but it doesn't work. I can't listen anything and it seems like slow motion video:( Also I've tried to connect my Logitech Speaker System Z313....the same problem...