Re: [FFADO-user] [I'm a user and need support] QJACKCTL not showing interface options

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

Hi Marc

On Tue, Mar 28, Marc Cayouette wrote:
> Find attached the output from jackd -R -P70 -dfirewire -p512 -n3 -v3

Thanks for providing this.  For the list's benefit it is included at the end
of this post.  There are some significant observations to make.

> Cannot create RT messagebuffer thread: Operation not permitted (1)

This indicates that your system has not granted your user permission to run
programs with the so-called realtime scheduling priorities.  Ffado requires
this in order to function correctly.  There is a good description of this at

  http://jackaudio.org/faq/linux_rt_config.html

In your case you are running Ubuntu so it should be possible to rectify this
issue by adding your user (marcc) to the "audio" group.  I believe there is
a graphical tool to do this in Ubuntu.  You may have to logout/login after
this so the change can take effect.

Another problem we see is

> Cannot lock down 82274202 byte memory area (Cannot allocate memory)

This is another system limit like access to the realtime scheduling.  Jackd
and FFADO need the ability to lock memory so it isn't paged out.  Paging
would not be good due to the near realtime requirements of an audio system
like jack.  If you can add your user to the "audio" group to fix the
scheduling complaint, this memory locking problem will also be fixed.

> Fatal (devicemanager.cpp)[ 187] initialize: No firewire
> adapters (ports) found.

This is the final significant message we see, and comes from FFADO.  It
means pretty much what it says: that the system cannot see any firewire
adapters.  Obviously this prevents communication with any firewire buses
those adapters might provide so it's something which needs to be fixed.

There is a chance that this is collateral damage from a permission problem. 
It might be fixed after your user is added to the "audio" group.  Therefore
it is worth rerunning this test once you are a member of the "audio" group
and see what happens.  If it still errors out, post the output again so we
can take a look.

Please also post the full ffado-diag output as described in my earlier post:

> For example:
> 
>   ffado-diag >& /tmp/ffado-diag.log
> 
> You will find the output in the /tmp/ffado-diag.log file, which you can
> then
> cut and paste into an email.

This will tell us a little more about the hardware you have and might give
additional clues as to the remaining problems.

Regards
  jonathan

Output from jackd command
-------------------------
marcc@marcc-desktop:~$ jackd -R -P70 -dfirewire -p512 -n3 -v3
jackdmp 1.9.11
Copyright 2001-2005 Paul Davis and others.
Copyright 2004-2014 Grame.
jackdmp comes with ABSOLUTELY NO WARRANTY
This is free software, and you are welcome to redistribute it
under certain conditions; see the file COPYING for details
Cannot create RT messagebuffer thread: Operation not permitted (1)
Retrying messagebuffer thread without RT scheduling
Messagebuffer not realtime; consider enabling RT scheduling for user
no message buffer overruns
Cannot create RT messagebuffer thread: Operation not permitted (1)
Retrying messagebuffer thread without RT scheduling
Messagebuffer not realtime; consider enabling RT scheduling for user
no message buffer overruns
Cannot create RT messagebuffer thread: Operation not permitted (1)
Retrying messagebuffer thread without RT scheduling
Messagebuffer not realtime; consider enabling RT scheduling for user
no message buffer overruns
JACK server starting in realtime mode with priority 70
self-connect-mode is "Don't restrict self connect requests"
Cannot lock down 82274202 byte memory area (Cannot allocate memory)
Cannot create RT messagebuffer thread: Operation not permitted (1)
Retrying messagebuffer thread without RT scheduling
Messagebuffer not realtime; consider enabling RT scheduling for user
1490660557248582:  (ffado.cpp)[  92] ffado_streaming_init: libffado 2.2.1-
built Dec  1 2015 05:12:06
firewire ERR: FFADO: Error creating virtual device
Cannot attach audio driver
1490660557249473: Fatal (devicemanager.cpp)[ 187] initialize: No firewire
adapters (ports) found.
1490660557249479: Fatal (ffado.cpp)[ 160] ffado_streaming_init: Could not
initialize device manager
JackServer::Open failed with -1
no message buffer overruns
Failed to open server