[PlanetCCRMA] Jack+FFADO not running on CCRMA/Fedora14

[Fernando Lopez-Lezcano]

On 12/30/2010 01:27 AM, linux media 4 wrote:
> On 12/29/2010 02:19 AM, linux media 4 wrote:
>> Hi,
>>
>> I've been googling this for a while. Time to ask the list...
>>
>> ==================
>> First the details...
>>
>> bash>   yum list jack-audio-connection-kit
>> Installed Packages
>> jack-audio-connection-kit.i686  1.9.6-2.fc14
>>
>> bash>   yum list ffado
>> Installed Packages
>> ffado.i686   2.1.0-0.1.20101015.svn1913.fc14
>> ==================
>>
>> Jack+Alsa runs fine but when I run Jack+FFADO with (and) without
>> realtime privileges, neither start...
>>
>> bash>   /usr/bin/jackd -dfirewire -r96000 -p512 -n3
>> jackdmp 1.9.6
>> Copyright 2001-2005 Paul Davis and others.
>> Copyright 2004-2010 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 thread 1 Operation not permitted
>> Cannot create thread 1 Operation not permitted
>> JACK server starting in realtime mode with priority 60
>> Cannot lock down memory area (Cannot allocate memory)
>> Cannot create thread 1 Operation not permitted
>> ERROR: messagebuffer not initialized: 09186713744:  (ffado.cpp)[  92]
>> ffado_streaming_init: libffado 2.999.0- built Oct 15 2010 07:48:37
>> firewire ERR: FFADO: Error creating virtual device
>> Cannot attach audio driver
>> JackServer::Open() failed with -1
>> Failed to start server
>
> I found a solution, but I was following a couple of posts here and just
> couldn't get things working right. So I found some posts online from
> different distibutions. Fernando, could you tell me if this fix will
> conflict with how you're setting things up in CCRMA/Fedora14 (or will be
> setting things up in the future).
>
> This first one comes from a post by Fernando...
> I created the file...
>
> /etc/security/limits.d/90-jack.conf
>
> With the contents...
>
> ###  START FILE  ###
> # Planet CCRMA, jack-audio-connection-kit
> #
> # Allow processes access to rt priority and memory locking
> # without limits, needed by the rt kernel and jackd
> *	-	rtprio	99
> *	-	memlock	4194304
> *	-	nice	-10
> ###  END FILE  ###
>
> This second one was from my google searches...
>
> I created the file:
> /lib/udev/rules.d/50-raw-firewire.rules
>
> I copied this into the file:
> KERNEL=="raw1394", NAME="raw1394", GROUP="audio"
>
> I added myself to the group 'audio'
>
> This exact thing happened (and the same fix was applied) to my
> CCRMA/Fedora12 system. I'm wondering if I'm the only one having these
> problems, or are others also but they apply fixes and don't post them.
> It would seem odd if I'm the only one (two times in a row).

In my jack package I had this:

----
# IEEE1394 (firewire) devices
# Please note that raw1394 gives unrestricted, raw access to every single
# device on the bus and those devices may do anything as root on your 
system.
KERNEL=="raw1394",                      MODE="0666"
KERNEL=="dv1394*",                      MODE="0666"
KERNEL=="video1394*",                   MODE="0666"
----

for access to firewire (which again gives universal access, probably not 
good either :-).

-- Fernando