LinuxMusicians

I guess there is a issue in the Linux kernel that fails to handle some USB errors, and as long as you have a good chipset and a fast CPU you won't run into those problems. Well, actually my understanding is that the underlying issue is a bug in the implementation inside the MOTU device itself (I be...

Sorry to leave everyone hanging, unfortunately I still don't have any news to report at this time. Good to see you back here, Dylan. I was beginning to get worried :shock: However, just to set expectations based on my current understanding, there is a strong possibility that the issues with UL ES v...

I am able to confirm issues with this firmware and the UltraLite AVB ES specifically. I would have expected no difference in this regard versus the non ES variants, but something is definitely different. I'm looking to see if I can find out what is different. Hi AudioNarwhal , Its been quiet here f...

@AudioNarwhal Running 1.4.5 in my 8pre-ES. It has been rock solid. On the previous firmware it would have acted up at least a couple of times and often more than that during the past 10 days. Thanks again! Nice to hear that superb Could you please add whether you are running with or without a kerne...

Seems like it just makes a UDP connection on port 9999, checks if the device is actively streaming via USB and if so sends the following bytes to force the sync: 0000 4d 4f 54 55 0b 00 00 00 00 00 00 00 55 02 00 00 MOTU........U... 0010 10 00 00 00 .... How does it do the check whether the device i...

@jkohls These are interesting results. I think I need to do some reading about how Jack's rate/period/frames interacts with the underlying ALSA driver. Hi all, I suspect that the interaction between Jack and the underlying driver layer is probably adding additional variation in results and overall ...

I think you might be right.. I noticed today during testing 1.4.5 that the channel count didn't match in USB2 mode. This file was saying one thing while the webapp showed another. I'm now making sure these match. jkohls : is this something we could put in our setup-scripts to make sure settings are...

Hi all, just wanted to mention that I've created an overview of some key posts of the recent weeks to our README.md: https://github.com/shellwalker-coder/motu_patch_testing#readme or at Johnnys repo: https://github.com/johnny2k/motu_patch_testing#readme I hope that helps to track the bits and pieces...

It is much easier to just build the patched module. I'm off now, without the UL. I'll try to come with clearer explanations in 2023... Happy holidays ! Looking forward to your updates, Baptiste :D Enjoy the season holidays! Drkoma Also note the comment from AudioNarwhal about the MK4 not supporting...

And there it is: https://github.com/johnny2k/motu_patch_testing Can anyone explain how to test/try this? Ive never patched the kernel before , all I find is zst files, downloaded linux headers for 6 but still Im far from understanding how to go about this, even with the script. Hi Drkoma, Currently...

.... Unless someone else has already started or people are fine with what we have already I volunteer to pull something together. And there it is: https://github.com/johnny2k/motu_patch_testing I've contributed a Python based setup script today: motu-setup.py Its purpose is to configure the device ...

AudioNarwhal wrote: ↑Sun Nov 27, 2022 2:42 am

...
The firmware:
MOTU AVB 1.4.3+92494 for UltraLite AVB and Stage-B16.update

Hi Dylan,
Thanks for sharing this.
Does this beta FW go together with your kernel patch or can one use it without the kernel patch?

Cheers!

.... It seems like there's at least three of us up and running with this patch and logging so I'm guessing it won't be long before we've all got some amount of feedback and ideas. A dedicated space for those discussions will do a lot to prevent this thread from getting out of control. I can think o...

A few caveats... The current state of the patch appears to introduce 12ms of latency on output, and it doesn't seem to be completely reliable for those who have tested so far. That said, more testing is definitely welcomed and it will help to understand the complete scope of the problems. In additi...

baptiste wrote: ↑Wed Nov 16, 2022 8:47 am

I think i can do that !

Hi Baptiste,
Would you mind sharing simple step by step instructions for patching and compiling the module out if tree?
Less experienced members could then easily pick that up and give it a try.

Cheers!