[LAU] limits.conf not applied in Ubuntu 16.10

Hi all, Is testing Ubuntu 16.10 these days, noticed something interesting. Since upgraded to 16.10 Yakkety, modifications in /etc/security/limits.conf are not taken into consideration when logging in the graphical interface. Reported the bug already to Ubuntu, but if I could find a workaround in the meantime... /etc/security/limits.conf: @audio - rtprio 99 @audio - memlock unlimited I tried the same settings in /etc/security/limits.d/audio.conf, to the same results. After logging in Unity, opening a console, the limits are not set: blablack@ideaon:~$ ulimit -l -r max locked memory (kbytes, -l) 64 real-time priority (-r) 0 Reloging to my user DOES apply the limits: blablack@ideaon:~$ ulimit -l -r max locked memory (kbytes, -l) 64 real-time priority (-r) 0 blablack@ideaon:~$ su blablack Password: blablack@ideaon:~$ ulimit -l -r max locked memory (kbytes, -l) unlimited real-time priority (-r) 99 Switching to a console (ctrl+alt+f1) and logging in would apply the limits as well. The exact same setup used to work fine on Xenial 16.04 before upgrade. I think it's something with Pam and Lightdm (or at least a lot of googling is pointing me in that direction). Would you guys have any idea what I can have a look at? Thanks in advance, Aurélien