LinuxMusicians

Update from my side: I decided to switch to an old macbook running jack, only connected to network and my Ultralite. Never looked back since then, no single problem.
Thank's for all your work, maybe sometime i can switch back to linux. I really hope so.

I tried disabling CONFIG_USB_EHCI_HCD but nothing has changed for me.
returns nothing for me either

Here you go (Ultralite AVB with ESS): Bus 001 Device 004: ID 07fd:0005 Mark of the Unicorn UltraLite AVB Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 239 Miscellaneous Device bDeviceSubClass 2 bDeviceProtocol 1 Interface Association bMaxPacketSize0 64 idVendor 0x07fd Mark...

lsusb -t | ag motu |__ Port 4: Dev 4, If 3, Class=Audio, Driver=snd-motu-avb, 480M |__ Port 4: Dev 4, If 1, Class=Audio, Driver=snd-motu-avb, 480M |__ Port 4: Dev 4, If 4, Class=Audio, Driver=snd-motu-avb, 480M |__ Port 4: Dev 4, If 2, Class=Audio, Driver=snd-motu-avb, 480M |__ Port 4: Dev 4, If 0,...

I got channelhopping and distortion after some days with the new driver as well I have the Ultralite AVB ESS Version with latest firmware.

I just tested Drumfix's new Driver. Seem's to work fine for now!
Thank you @Drumfix!

Here (https://www.minidsp.com/products/usb-audio-interface/usbstreamer-box)I found a small ADAT-to-USB converter box. Not overly expensive (about 100EUR). Since the manufacturer explicitly mentions alsa compatibility I have ordered this now and will give a feedback here when the box has arrived. In...

Seems to work fine for now, but channel hopping is still a problem I am not sure if the channelhopping is an ALSA or a jackd problem. Since restarting jackd helps, it may be a jackd problem. Unfortunately I got no helpful response from the jackd mailing list. I experienced channelhopping with both,...

Seems to work fine for now, but channel hopping is still a problem

OK, the patch could be simplified and on my machine I get some sound out of the Ultralite AVB. It's the older one without ESS chips but with the most recent firmware. The patch is for linux-5.8-rc6. Test && enjoy. drumbell_avb-patch_for_linux_5.8.rc6.txt I just compiled linux-5.8-rc6 with your patc...

Would anyone be able to share the 1.3.4+558 firmware? I've been following this thread and fighting with my Ultralite AVB for over a year now. I haven't yet been able to successfully get the patches to work on Archlinux. I've tried some older firmware versions, but still get the channel hopping issu...

I was wrong about the distortion, sorry about that. My Server rebooted and i didn't realize it booted back to the unpatched realtime kernel. If i play via alsa on channel 16 it hops to 24.

I left my Motu powered overnight and it switched channels again
Anyway, no distortion in 12h runtime is very promising! Thanks @Drumfix

Edit: After some days of usage i got multiple Distortions. Sometimes it recovers automatically after 1-3 minutes.

I forgot to mention that even with your kernel patch applied i got channel hopping modulo 8 :( Here's the output of lsusb -v: Bus 001 Device 006: ID 07fd:0005 Mark of the Unicorn UltraLite AVB Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 239 Miscellaneous Device bDeviceSu...

That sound's great. I really wanna keep my Ultralite! I also experienced the "scheduling while atomic" bug without hardlock. First time stopping/starting playback -> hardlock. Second and third time without hardlock. My Motu isn't plugged in right now, i'll send you the output of lsusb -v later, than...