Search found 17 matches

by nandoll
Tue Jan 17, 2023 7:18 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

AudioNarwhal wrote: Tue Jan 17, 2023 5:27 pm

Here is a build for the 8M, 16A, 1248 and 112D devices.

MOTU AVB 1.4.5+92559 for 8M, 16A, 1248 and 112D.update

Thanks!! Hopefully I will be able to run some tests this coming weekend... ("motu" driver + vendor mode = 1)...

by nandoll
Fri Jan 06, 2023 8:41 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

Would it be possible to share the source to this utility? (I try to never rely on binaries alone if possible, for example this program did not run on an older version of Fedora because of GLIB version incompatibility). Should be doable with this (untested): echo '4d4f54550b0000000000000055020000100...
by nandoll
Fri Jan 06, 2023 2:42 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

Edit : the first hardware input (microphone 1 on the front side of the 828ES) is still routed to input 17 in Carla or Ardour. While audio is running can you try this utility (motu-sync-rec) to see if it corrects the input channel mapping? Can you also share the output logs from this tool? motu-sync...
by nandoll
Fri Jan 06, 2023 1:37 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

Edit : the first hardware input (microphone 1 on the front side of the 828ES) is still routed to input 17 in Carla or Ardour. While audio is running can you try this utility (motu-sync-rec) to see if it corrects the input channel mapping? Can you also share the output logs from this tool? motu-sync...
by nandoll
Fri Nov 25, 2022 1:42 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

@AudioNarwhal: ... then some questions in a subsequent post... Not addressed (yet? - cross fingers on this!) on this thread: c) being able to use Motu hardware under Linux with full 64 channel I/O using USB @ 44.1 or 48KHz sampling rate. ... If a) and b) solve (or ameliorate) the problems we see in...
by nandoll
Fri Nov 25, 2022 1:31 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

@AudioNarwhal: ... then some questions in a subsequent post... After re-reading the last few pages of this (fantastic!) thread, I see a couple of issues being addressed: a) channel hopping and other glitchy behavior in class compliant mode: there is a potential improvement when running a kernel wit...
by nandoll
Fri Nov 25, 2022 1:15 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

@AudioNarwhal: returning to this thread after quite a while, so insanely GOOD to have you here! I'll jump in, first with my current status (sorry for the long post), then some questions in a subsequent post... === Current status: Adding one more data point to the current status: Just yesterday (bef...
by nandoll
Thu Nov 24, 2022 11:50 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

@AudioNarwhal: returning to this thread after quite a while, so insanely GOOD to have you here! I'll jump in, first with my current status (sorry for the long post), then some questions in a subsequent post... === Current status: == @ home: motu: 8M + 16A combo (AVB connected), currently running fir...
by nandoll
Wed Apr 28, 2021 5:20 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

I'm using CONFIG_PREEMPT=y (low-latency desktop) ... Enjoy I tried two options (as outlined above in the thread): == 5.11.16 (fedora kernel) + ua101 driver & patches + CONFIG_PREEMPT (disabled threadirqs, I did not yet set affinity for interrupt handling or re-enabled hyperthreading) Seems to w...
by nandoll
Tue Apr 27, 2021 4:16 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

My advice is to run a low-latency kernel with irqthreads disabled instead of a rt-kernel and set the irq affinities so that the USB interrupt has its own core. Also, you don't necessarily disable hyperthreading. The driver does 8000 interrupts/sec, so the rt-kernel does 16000 task switches/per seco...
by nandoll
Tue Apr 27, 2021 5:36 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

As mentioned earlier in this thread i use my own driver based on the ua101 driver. ... Currently additionally proprietary mode must be activated by the curl command. Now that i know how to communicate with the device over USB i will add the related command to the driver soon. Ah, I had been using t...
by nandoll
Mon Apr 26, 2021 10:43 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

As mentioned earlier in this thread i use my own driver based on the ua101 driver. ... Currently additionally proprietary mode must be activated by the curl command. Now that i know how to communicate with the device over USB i will add the related command to the driver soon. Thanks for the driver ...
by nandoll
Sun Apr 25, 2021 8:04 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

64 channel mode is working just fine when the necessary kernel changes are applied and the curl command executed. However executing the curl command must be done over the ethernet connection. That is what I have been using and it has been quite stable. I am running kernel 5.9.1 but found that the u...
by nandoll
Mon Sep 21, 2020 12:42 am
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

... This is no longer (apparently) happening under 5.8.9, and while there were some xruns running Jack with 128 frame buffers, the audio quality was good with no weird buzzing or glitches. Nope, it is still happening... at least this morning, and it took me a while to get it running correctly (rest...
by nandoll
Sat Sep 19, 2020 9:04 pm
Forum: Computer Related Hardware
Topic: Ultralite AVB
Replies: 892
Views: 2780171

Re: Ultralite AVB

An update... I am successfully running the older vendor endpoint patch on 5.8.9, using the proprietary USB endpoints (4 & 5) and running at 48KHz and 64 channels on a Motu 8M. This requires a patched kernel bzImage (in addition to patches in the sound USB kernel module) because the current USB c...