XMir 1.0 (the old Xorg extension) is now deprecated and is not being maintained or fixed. It is replaced by the new 'Xmir' binary (package 'xmir') introduced in Ubuntu 15.10 wily.
** Changed in: xorg-server (Ubuntu) Status: New => Won't Fix -- 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/1457961 Title: Session (X11?) is killed when screen is turned off Status in Light Display Manager: New Status in lightdm package in Ubuntu: New Status in xorg-server package in Ubuntu: Won't Fix Bug description: When my computer is idle it sometimes ends up at the login screen with my session killed. This also happens when I disable the session locking. Not sure if this is related to systemd or this bug: LP1441687 ProblemType: Bug DistroRelease: Ubuntu 15.04 Package: lightdm 1.14.0-0ubuntu2 ProcVersionSignature: Ubuntu 3.19.0-16.16-generic 3.19.3 Uname: Linux 3.19.0-16-generic x86_64 ApportVersion: 2.17.2-0ubuntu1 Architecture: amd64 CurrentDesktop: Unity Date: Fri May 22 11:56:27 2015 InstallationDate: Installed on 2014-07-25 (301 days ago) InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417) SourcePackage: lightdm SystemImageInfo: current build number: 0 device name: channel: daily last update: Unknown UpgradeStatus: Upgraded to vivid on 2015-01-24 (117 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/lightdm/+bug/1457961/+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