cadence can't start with "snoop firewire trafic" option

Xzu Rukneg · Post by **Xzu Rukneg** » Sat Aug 27, 2016 8:31 am

Hi.
"snoop firewire trafic" option make cadence unable to start with my saffire pro40.

Trying to start cadence:

Fri Aug 26 14:31:08 2016: Controller deactivated.
Fri Aug 26 14:31:08 2016: ------------------
Fri Aug 26 14:31:08 2016: Controller activated. Version 1.9.11 (unknown) built on Sun Aug  7 20:50:03 2016
Fri Aug 26 14:31:08 2016: Loading settings from "/home/kx44/.config/jack/conf.xml" using expat_2.1.0 ...
Fri Aug 26 14:31:08 2016: setting parameter 'engine':'driver':'(null)' to value "firewire"
Fri Aug 26 14:31:08 2016: setting parameter 'engine':'realtime':'(null)' to value "true"
Fri Aug 26 14:31:08 2016: setting parameter 'engine':'realtime-priority':'(null)' to value "85"
Fri Aug 26 14:31:08 2016: setting parameter 'engine':'alias':'(null)' to value "false"
Fri Aug 26 14:31:08 2016: hwalias <- false
Fri Aug 26 14:31:08 2016: setting parameter 'drivers':'firewire':'period' to value "256"
Fri Aug 26 14:31:08 2016: setting parameter 'drivers':'firewire':'rate' to value "44100"
Fri Aug 26 14:31:08 2016: setting parameter 'drivers':'firewire':'input-latency' to value "81"
Fri Aug 26 14:31:08 2016: setting parameter 'drivers':'firewire':'output-latency' to value "81"
Fri Aug 26 14:31:08 2016: setting parameter 'drivers':'firewire':'verbose' to value "6"
Fri Aug 26 14:31:08 2016: setting parameter 'drivers':'firewire':'snoop' to value "true"
Fri Aug 26 14:31:08 2016: Listening for D-Bus messages
Fri Aug 26 14:31:08 2016: Starting jack server...
Fri Aug 26 14:31:08 2016: JACK server starting in realtime mode with priority 85
Fri Aug 26 14:31:08 2016: self-connect-mode is "Don't restrict self connect requests"
Fri Aug 26 14:31:08 2016: ERROR: firewire ERR: FFADO: Error creating virtual device
Fri Aug 26 14:31:08 2016: ERROR: Cannot attach audio driver
Fri Aug 26 14:31:08 2016: ERROR: JackServer::Open failed with -1
Fri Aug 26 14:31:08 2016: ERROR: Failed to open server
Fri Aug 26 14:31:16 2016: ------------------
Fri Aug 26 14:31:16 2016: Controller activated. Version 1.9.11 (unknown) built on Sun Aug  7 20:50:03 2016
Fri Aug 26 14:31:16 2016: Loading settings from "/home/kx44/.config/jack/conf.xml" using expat_2.1.0 ...
Fri Aug 26 14:31:16 2016: setting parameter 'engine':'driver':'(null)' to value "firewire"
Fri Aug 26 14:31:16 2016: setting parameter 'engine':'realtime':'(null)' to value "true"
Fri Aug 26 14:31:16 2016: setting parameter 'engine':'realtime-priority':'(null)' to value "85"
Fri Aug 26 14:31:16 2016: setting parameter 'engine':'alias':'(null)' to value "false"
Fri Aug 26 14:31:16 2016: hwalias <- false
Fri Aug 26 14:31:16 2016: setting parameter 'drivers':'firewire':'period' to value "256"
Fri Aug 26 14:31:16 2016: setting parameter 'drivers':'firewire':'rate' to value "44100"
Fri Aug 26 14:31:16 2016: setting parameter 'drivers':'firewire':'input-latency' to value "81"
Fri Aug 26 14:31:16 2016: setting parameter 'drivers':'firewire':'output-latency' to value "81"
Fri Aug 26 14:31:16 2016: setting parameter 'drivers':'firewire':'verbose' to value "6"
Fri Aug 26 14:31:16 2016: setting parameter 'drivers':'firewire':'snoop' to value "true"
Fri Aug 26 14:31:16 2016: Listening for D-Bus messages
Fri Aug 26 14:31:16 2016: Starting jack server...
Fri Aug 26 14:31:16 2016: JACK server starting in realtime mode with priority 85
Fri Aug 26 14:31:16 2016: self-connect-mode is "Don't restrict self connect requests"
Fri Aug 26 14:31:16 2016: ERROR: firewire ERR: FFADO: Error creating virtual device
Fri Aug 26 14:31:16 2016: ERROR: Cannot attach audio driver
Fri Aug 26 14:31:16 2016: ERROR: JackServer::Open failed with -1
Fri Aug 26 14:31:16 2016: ERROR: Failed to open server

Switch O/I the device, then restart:

$ cadence-session-start -s
Traceback (most recent call last):
File "/usr/share/cadence/src/cadence_session_start.py", line 236, in <module>
sys.exit(startSession(False, False))
File "/usr/share/cadence/src/cadence_session_start.py", line 116, in startSession
startJack()
File "/usr/share/cadence/src/cadence_session_start.py", line 147, in startJack
DBus.jack.StartServer()
File "/usr/lib/python3/dist-packages/dbus/proxies.py", line 145, in __call__
**keywords)
File "/usr/lib/python3/dist-packages/dbus/connection.py", line 651, in call_blocking
message, timeout)
dbus.exceptions.DBusException: org.jackaudio.Error.Generic: Failed to open server

Tested many configurations, nothing help.