[LAU] AVB on Linux
bthaleproductions at gmail.com
Fri Jul 16 15:29:30 CEST 2021
Thank you for this information. Maybe my institution will be able to get
one of these interfaces to try out avb support. Maybe I can convince
them to get one, since it will also work on macos.
On 7/13/21 12:41 PM, Fernando Lopez-Lezcano wrote:
> On 7/13/21 8:20 AM, Brandon Hale wrote:
>> Thanks so much for these links Fernando. I've played with the
>> OpenAvnu repo about 2 years ago, but I couldn't get it working as I
>> didn't know what I was doing. I'll try compiling it with the standard
>> Linux network stack and see how far I get.
>> I don't currently have a motu avb interface, but I do have access to
>> an RME Digiface AVB <https://www.rme-usa.com/digiface-avb.html>. I'll
>> look through those repositories, but I figure there's not much I can
>> do with that interface on Linux as of yet. :(
>> What interface do you use to get the 64 channels over usb?
> There are several, at home I currently have an 8M and a 16A and I am
> driving them through a patched kernel with the drumfix's driver
> (caveat: the driver does NOT work with an RT patched kernel -
> something to do with the number of interrupts generated and context
> switches - but it works fine with a full preemption kernel with
> threadirqs disabled), details in this thread:
> For a couple of our speaker arrays I have again used 16A and 8M mainly
> as gateways into a larger array of Motus[*], but the 24ai and 24ao
> also work. For these I am still running old firmware and the regular
> usb driver in linux (newer Motu interfaces cannot be downgraded to old
> enough firmware for the class compliant driver to work).
> -- Fernando
> [*] https://ccrma.stanford.edu/~nando/publications/stage_grail_2019.pdf
>> On 7/13/21 2:17 AM, Fernando Lopez-Lezcano wrote:
>>> On 7/12/21 3:47 PM, Brandon Hale wrote:
>>>> Hello all,
>>>> Are there any of you here who are using AVB on Linux, especially
>>>> with a standard Ethernet port? What software or hardware are you
>>>> using to do this on your Linux machines? I am interested in playing
>>>> with it and have some AVB speakers to mess with, but I'm not sure
>>>> if it is even possible yet, especially with a standard laptop
>>>> Ethernet port.
>>>> Tell me about your Linux AVB success stories!
>>> None yet... :-(
>>> Regarding the use of i210 network interfaces, a while back I found
>>> At the top-level of the OpenAvnu checkout, run this make command:
>>> $ PLATFORM_TOOLCHAIN=generic make avtp_pipeline
>>> That will prevent it from linking to the i210 library and instead
>>> use the standard Linux network stack. The packet launch times and
>>> presentation timestamps will be
>>> far less even and I'm working on ways to lessen those problems, but
>>> you should be able to get a talker and listener built from the
>>> avtp_pipeline code to work toge
>>> ther with some tweaking of the avtp_pipeline INI files. Be sure to
>>> read through the documentation that comes with the avtp_pipeline code.
>>> But never had a chance to test it and see if it really works...
>>> Then there is this software:
>>> This is just 8 ports i/o on linux for motu avb cards, but it needs
>>> an i210 NIC (by the same guy that posted an experimental driver for
>>> proprietary usb mode on Motu's - in the LinuxMusicians forum - so
>>> you can get 64 channel i/o over usb with the newest firmware - I am
>>> using it and it works quite nicely).
>>> -- Fernando
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