I seem to be having the same difficulties here on Natty. <div>/etc/security/limits.d/audio.conf is correctly set up.</div><div>ulimits -l -r tells me I have unlimited memory and max priority of 95</div><div>I am definately a member of the Audio group.</div>
<div><br></div><div>Firewire is working correctly (will start without realtime, alsa backend fails to get realtime also) and yet starting jackd will yeild the following.  </div><div><br></div><div><div>jackd -d firewire</div>
<div>jackdmp 1.9.7</div><div>Copyright 2001-2005 Paul Davis and others.</div><div>Copyright 2004-2010 Grame.</div><div>jackdmp comes with ABSOLUTELY NO WARRANTY</div><div>This is free software, and you are welcome to redistribute it</div>
<div>under certain conditions; see the file COPYING for details</div><div>Cannot create thread 1 Operation not permitted</div><div>Cannot create thread 1 Operation not permitted</div><div>JACK server starting in realtime mode with priority 10</div>
<div>Cannot create thread 1 Operation not permitted</div><div>ERROR: messagebuffer not initialized: libffado 2.999.0- built Nov  1 2010 21:44:06</div><div>ERROR: messagebuffer not initialized: 01912191011: Error (PosixThread.cpp)[ 150] Start: Cannot create realtime thread (1: Operation not permitted)</div>
<div>ERROR: messagebuffer not initialized: 01912191047: Error (PosixThread.cpp)[ 151] Start:  priority: 15</div><div>firewire ERR: FFADO: Error creating virtual device</div><div>Cannot attach audio driver</div><div>JackServer::Open() failed with -1</div>
<div>Failed to start server</div><div><br></div><div>Something else seems to be going wrong here.                              </div><div class="gmail_quote">On Sun, Nov 22, 2009 at 6:13 PM, Scott Ecker <span dir="ltr">&lt;<a href="mailto:lau@troutpocket.org">lau@troutpocket.org</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">&gt; Hey,<br>
&gt;<br>
&gt; Can&#39;t seem to start jackd in realtime as user on ubuntu studio. It<br>
&gt; does start as root, but that&#39;s hardly a consolation (unless I run all<br>
&gt; audio software as root, which would be kinda daft IMO)<br>
</div>&gt; ...<br>
<br>
Have you tried modifying /etc/udev/rules.d/something (debian/ubuntu) or<br>
/etc/security/console.perms.d/60-raw1394.perms (fedora)?  Make sure you<br>
assign your security group (audio?) to the /dev/raw1394 device.<br>
<font color="#888888"><br>
-Scott<br>
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</div></div></blockquote></div><br></div>