On 17.04, even the workaround that Ewan posted in #5 above doesn't work for me. If I add DefaultLimitNOFILE=40000 to /etc/systemd/user.conf and log out and log in again, prlimit still shows this:
adam:~$ prlimit RESOURCE DESCRIPTION SOFT HARD UNITS ... NOFILE max number of open files 4096 4096 files adam:~$ -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to lightdm in Ubuntu. https://bugs.launchpad.net/bugs/1627769 Title: limits.conf not applied Status in lightdm package in Ubuntu: Confirmed Bug description: Since upgraded to 16.10 Yakkety, modifications in /etc/security/limits.conf are not taken into consideration when logging in the graphical interface. /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 via bash 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) 95 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. If you need any more information, please let me know. ProblemType: Bug DistroRelease: Ubuntu 16.10 Package: lightdm 1.19.4-0ubuntu1 ProcVersionSignature: Ubuntu 4.8.0-16.17-generic 4.8.0-rc7 Uname: Linux 4.8.0-16-generic x86_64 ApportVersion: 2.20.3-0ubuntu7 Architecture: amd64 CurrentDesktop: Unity Date: Mon Sep 26 17:27:10 2016 SourcePackage: lightdm UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1627769/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
