Re: [FFADO-user] Apogee Duet: frequent lockups

[Jonathan W. <jw...@ju...>]

Forwareded to the list for future reference.

----- Forwarded message from Website Email <dorian.greg@...> -----

Date: Wed, 10 Aug 2022 03:22:37 +0000
From: Website Email
To: Jonathan Woithe
Subject: Re: [FFADO-user] Apogee Duet: frequent lockups

Hello!...

I appreciate the timely response =) would think a mailing list is usually
slower than this... this is also my first time posting in one so I apologize
for any lack of etiquette...

August 9, 2022, 7:27 PM, "Jonathan Woithe" <jw...@ju...> wrote:

> What firewire card are you using? Running "lspci" and looking for a line
> with "FireWire" in it will provide this information if you don't know it
> off-hand.

There are two,

07:00.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller (rev 80)
09:02.0 FireWire (IEEE 1394): LSI Corporation FW322/323 [TrueFire] 1394a Controller (rev 70)

But the one I'm using for the Duet is the VIA one. The other one, I would
presume, is the one built-in to the motherboard (I am sure there is one
present).

> The above output indicates that your kernel is considered tainted due to the
> presence of a proprietary (closed source) kernel module that
> (unsurprisingly) was not built with the rest of the kernel. In most cases
> this would be a video driver of some description - probablly for Nvidia
> hardware.

Yes. Sorry I forgot to note; I'm using the ZFS driver from
archzfs.
 
> If it's feasible to temporarily disable the use of the proprietary kernel
> module, it would be worthwhile doing this to see if the faults are still
> present. If they are not, the cause is that proprietary module. If not,
> the issue is related to something else within the Linux kernel.

Not sure...
 
> For what it's worth, I do not recall any other user reporting the Apogee
> Duet working under Linux in the past.

Before buying the Duet I searched for any resources online indicating
if it would work under Linux, and this is what I had found:
https://linuxgamecast.com/2020/09/interfacing-linux-apogee-duet/

> In particular, could you tell us which jack driver you are using.

I have been using the FireWire driver;
/usr/bin/jackd -p1024 -u -dfirewire -r96000 -p256 -n
 
> Having said all that said, the kernel messages you have reported suggest
> that the problem lies within the OHCI hardware kernel driver - that is, the
> driver of your firewire card, rather than anything dealing specifically with
> the Duet. Once we determine whether FFADO is in use we can work out the
> best way to deal with this. 

Understood...

Thank you so much Jonathan, again I really appreciate the help
and here's hoping we can work out the issue.

----- End forwarded message -----