I also have
edited /etc/security/limits.conf as found on the web.
It now contains something like
@audio - rt_priority 95
@audio - nice -10
@audio - memlock 300000
but to be honest I have no clue which app read or use this.
PAM.
Thanks a lot.
I always denied to get familiar with PAM, but it looks like there's no
way around it ;-) .
Best regards
ce