[Fedora-music-list] RT-PRIO for libffado???

[Simon Lewis]

Having only used USB audio devices up to now I am gaining my first 
experiences with firewire devices.

The command line tests "ffado-test Discover" and "ffado-test 
ListDevices" show that the Focusrite Saffire PRO 24 is correctly 
detected on booting my laptop, the firewire drivers are correctly loaded 
and that there are no warnings or errors.

ffado-mixer works perfectly, indeed complements must go to the ffado 
team for the last 2 releases of ffado and libfado including the dice 
support.

However, on my fedora f21 jam installation libffado cannot creat any 
realtime threads (even though jack with usb audiuo devices works 
perfectly with RT pre-emption).

Please can anyone supply the necessary tweak to the system configuration?

The output from jackd is:

13:25:12.373 JACK wurde mit PID = 3182 gestartet.
no message buffer overruns
no message buffer overruns
no message buffer overruns
jackdmp 1.9.10
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
JACK server starting in realtime mode with priority 20
self-connect-mode is "Don't restrict self connect requests"
1420287912685164:  (ffado.cpp)[  92] ffado_streaming_init: libffado 
2.2.1-Unversioned directory built Aug 17 2014 10:15:13
1420287912687582: Error (PosixThread.cpp)[ 161] Start: Cannot 
create realtime thread (1: Operation not permitted)
1420287912687597: Error (PosixThread.cpp)[ 162] Start: priority: 25
firewire ERR: FFADO: Error creating virtual device
Cannot attach audio driver
JackServer::Open failed with -1
no message buffer overruns
Failed to open server
13:25:12.718 JACK wurde angehalten

Many thanks in advance, Simon

-- 
__________________________________
Simon Lewis
Groß-Gerauer-Straße 84
55130 Mainz
Germany
Tel.: [phone]
E-Mail: simon.lewis(a)slnet-online.de