LinuxMusicians

SUCCESS! 8pre-ES is now working in Linux! Listened to a whole album played through a pair of inputs on the interface and routed back out using qjackctrl. Left on overnight and in the morning my output channels were still correct - no swapping! I can't tell you how happy I am! Fresh install of MX 18....

Recompiled, documenting every step: cd /usr/src sudo tar xf linux-source-4.19.tar.xz cd linux-source-4.19 #in root terminal cd/usr/src/linux-source-4.19 xcat ../linux-patch-4.19-rt.patch.xz #user terminal #copy motu-proprietary_pcm.c.patch, pcm.c.patch-2.patch to /usr/src/linux-source-4.19/sound/usb...

Don't worry, we will get your device to run... Thanks Drumfix! I did do the curl commands on a previous attempt, but unfortunately did not save any log messages. I nuked the patched 4.19 kernel last night, for some reason it was filling up the hard drive with huge log files. Recompiling now and wil...

Hi pemberly, Thanks for the reply. I have thought about interfacing with another box, maybe an Ultralite AVB since those seem to work, but also I was trying to go for simplicity. Single interface with mic pres, no mixer or additional boxes. The MOTU AVB line seemed like a dream come true for those o...

Compiled the 4.19 kernel and applied the real-time patch. Was able to play audio through reaper for quite a while before the channels began to swap. Added the pcm.c patch and quirk, recompiled. Unable to start jack, keep getting "Cannot use real-time scheduling (RR/97)(1: Operation not permitt...

Compiled the 4.19 kernel and applied the real-time patch. Was able to play audio through reaper for quite a while before the channels began to swap. Added the pcm.c patch and quirk, recompiled. Unable to start jack, keep getting "Cannot use real-time scheduling (RR/97)(1: Operation not permitte...

Compiled the 4.19 kernel and applied the real-time patch. Was able to play audio through reaper for quite a while before the channels began to swap. Added the pcm.c patch and quirk, recompiled. Unable to start jack, keep getting "Cannot use real-time scheduling (RR/97)(1: Operation not permitte...

The interface shows up in the list of connected USB devices but ifconfig does not list any USB devices. In the 8Pre-ES settings, it shows USB2 mode, so it looks like it's already in proprietary mode, but I don't know if the channel count is correct. EDIT: After no success connecting directly, I conn...

I made it through the kernel compilation process with the above patch and quirk applied. I am having trouble setting my 8pre-ES to proprietary mode. I tried the above curl commands with USB only, tried them with a network cable and changing the curl to reflect the net id on the MOTU. Qjackctrl recog...

For 4.19 the first two hunks should be the attached patch. Thank you! I've had some struggles, first time compiling a kernel, it seems to be compiling fine now. I was getting errors. It seems many "guides" on this process were leaving out a step here or there! You said the quirk should go...

Ok, here is the pcm.c patch + a 3 quirks for proprietary 24, 32 and 64 channel mode. Add the quirk that matches the number of channels you want to use. (this is why the file is not a patch file). The number of channels must match the value you set in the "maxUSBToHost" Note: the pcm patch...

Today they removed all firmware except for the latest from their website:

http://motu.com/proaudio/index.html#avb ... -resources


EDIT: Previous firmware is still available on their firmware change log page:

http://motu.com/techsupport/technotes/f ... changelog/

I just had a peek at http://motu.com/avb/index.html#avb-download-additional-resources and saw that MOTU downgraded the "latest" firmware on that site to 1.2.9+479. http://motu.com/techsupport/technotes/firmwarechangelog/ still shows the 1.3+ firmwares... Interesting. I have been checking ...

Drumfix wrote:I downgraded to 1.2.9, which is much more reliable so far. Got a i210 card now, so will try to get AVB running.

Unfortunately the firmware versions do not go back that far for the 8pre-es.

Has 1.2.9 been reliable enough? Any luck with AVB?

Looking at this thread http://www.motunation.com/forum/viewtopic.php?f=14&t=65037 , there might even be other layers of problems or misconfigurations, like powersaving in particular, even on windows. Have you guys with the new firmware tried setting (usb host controllers) tunables of powertop t...