LinuxMusicians

Hey all - I managed to get root on the Ultralite AVB (the embedded linux OS that runs on it). I don't know if it could be of any use to you guys (probably not), but perhaps it could at least be of some assistance during debug (I certainly saw some messages regarding USB events in the root telnet co...

SUCCESS!! 8<> ---snip--- ---snap---<>8 my linux kernel version is: 5.11.0-1003-raspi (aarch64 64-bit) and it's WORKING on ubuntu 20.10 right now. no channel hopping. I can get the bit-crusher sound if I bump it down to 32 samples, but I wasnt able to get I just tried Ubuntu kernel build 5.11.0-0511...

Hi @shellwalker , @ahellquist @stean . Thank you all for your replies! After 7-8 hours, sometimes, the sound begins to do something strange, but I can save and restart and everything is fine.. So, if I've understood, you with the 828es are using a newer firmware, right? My unit came with v1.3.4+172...

Hi LinMusicians, I own a good working 828es and I'm going to buy a Ultralite AVB or a 624 AVB with a switch. I'm using the first firmware on AVL-MX or Kubuntu 20.04. I use to wait the turning on of the interface, then I turn on the laptop (Acer Nitro 5). I can do some tests but I need to know exact...

... But now no way to start it with Cadence, here's the log : Starting jack server... Wed Feb 3 15:20:38 2021: JACK server starting in realtime mode with priority 10 Wed Feb 3 15:20:38 2021: self-connect-mode is "Don't restrict self connect requests" Wed Feb 3 15:20:38 2021: ERROR: contro...

studio@studio-ThinkPad-W530:~/linux$ make O=../build_wrl_patch_1 make[1] : on entre dans le répertoire « /home/studio/build_wrl_patch_1 » SYNC include/config/auto.conf.cmd GEN Makefile ... HOSTCC scripts/extract-cert /home/studio/linux/scripts/extract-cert.c:21:10: fatal error: openssl/bio.h: Aucun...

wrl wrote: ↑Sun Jan 17, 2021 3:38 am Yeah it seems like this approach was a dud. I've got another theory I'm investigating but nothing concrete yet.

-w

Hi,
How is it going so far?
Do you need any help?

Some thought for debugging: Can someone where the patch doesn't work confirm it does work on windows? Maybe it's just a wonky combination of USB-Controllers and the Interface or the like? Good thought! However it seems it is not possible to run the device in class compliant mode under Windows. I ga...

wrl wrote: ↑Sun Jan 17, 2021 3:38 am Yeah it seems like this approach was a dud. I've got another theory I'm investigating but nothing concrete yet.

-w

Hi wrl,
Good to hear from you again. Yeah, please do keep up the flag!
I'm volunteering for testing as soon as you've got something to try out.

This post is aimed at providing a quick and simple guide for testing the kernel patch provided by @wrl. That patch is aimed at fixing the channel drifting issue and should in theory be applicable to MOTU 828ES as well as Ultralite AVB devices. Please note: the patch does not (yet) provide a stable s...

1. One new thought on the differences: how is your motu 828es configured? In my case I have: - 6 "Computer to MOTU" channels ("From USB"). - 14 "Motu to Computer" USB channels. Actually, here's a thought – in the device web interface what do you have your "Host bu...

1. One new thought on the differences: how is your motu 828es configured? In my case I have: - 6 "Computer to MOTU" channels ("From USB"). - 14 "Motu to Computer" USB channels. Actually, here's a thought – in the device web interface what do you have your "Host bu...

Not sure yet, need to dive in more to figure out how to instrument this stuff. This patch was a really early test of the hypothesis made without me fully understanding the implications, but, hey, "worked on my system" and I was curious. An idea I had regarding debugging: maybe it is possi...

Adding to my latest post: I just ran a pure "next-20201223" without the patched applied: 1. also here I'm seeing the dmesges about the "not valid " clock source. So I guess that is not related to the patch. 2. I'm seeing issues with my thunderbolt setup (network card in the docki...

Unfortunately, if this isn't already working, then it's not going to work. This patch deals with one hypothesis and one hypothesis only: that the drifting is due to scheduling delays between receiving an inbound (capture) transfer and submitting an outbound (playback) transfer. This patch eliminate...