[LAD] JACK and vanilla 3.19.2 startup issue

Hi All, As root, starting JACK1 0.124.1 on an almost totally vanilla 3.19.2-1-ARCH kernel fails. Output of kernel with JACK1 issue is pasted below[1]. The same system works fine with the 3.18.9-rt5-1-rt kernel. Running "groups" tells me there is no group other than "root", so JACK seems to misinterpret that there is an audio group on the "broken" kernel. Any suggestions as to what's going on? Thanks, -Harry PS: I'm aware of the reasons to not run JACK as the root user or login as root for daily use. [1] Output while running "broken" kernel: [root@audio ~]# jackd -ddummy jackd 0.124.1 Copyright 2001-2009 Paul Davis, Stephane Letz, Jack O'Quinn, Torben Hohn and others. jackd 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 is running in realtime mode, but you are not allowed to use realtime scheduling. Your system has an audio group, but you are not a member of it. Please add yourself to the audio group by executing (as root): usermod -a -G audio (null) After applying these changes, please re-login in order for them to take effect. You don't appear to have a sane system configuration. It is very likely that you encounter xruns. Please apply all the above mentioned changes and start jack again!