Just for information
Reading up on Motu 624 AVB a bit and my guess is that there are a lot of difference under the hood compared to my Utralite AVB cards, I have no idea if that is a cause of i/o channel mapping issues though

Quick compare

624 has Gigabit Eth, USB3, Thunderbolt, ESS Sabre 32 Ultra DACs, Color display and capable of handling 8 blocks of AVB streams in all Sample rates and is cheaper
vs

Ultralite has 100Mbit, USB2, no Thuderbolt, cheaper converters but close spec wise, blue low res display, can handle 3 blocks of streams in 44k1/48k and two blocks in 88 and only one block in 192k

The only pro with Ultralite AVB is Midi in/Midi Out, 2 more inputs and 2 more outputs

/Anders

2017-08-09 1:09 GMT+02:00 Paul Davis <paul@linuxaudiosystems.com>:

There are some reports of similar issues even with non-USB devices, so I suspect it is an ALSA bug. Probably not that hard to debug and fix, but I'm not clear that I have the time or energy for it.

On Tue, Aug 8, 2017 at 6:41 PM, Chris Caudle <chris@chriscaudle.org> wrote:
On Tue, August 8, 2017 5:15 pm, Paul Davis wrote:
> Tentative diagnostic: ALSA driver bug.

Isn't this a class compliant USB device? Does the bug seem likely to
affect only this one device, or is this something that for some reason
other people have just not reported with other devices yet, but should be
expected to affect all multi-channel USB devices?

--
Chris Caudle

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