As in summary, booting with upstart works fine. I have autologon configured, but after the system start I am greeted wit plasma lock screen instead of the desktop. When I enter my password to unlock, the screen goes black. Mouse cursor moves and is visible.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: systemd 219-7ubuntu4
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic i686
NonfreeKernelModules: nvidia
ApportVersion: 2.17.2-0ubuntu1
Architecture: i386
CurrentDesktop: KDE
Date: Tue Apr 28 17:30:11 2015
InstallationDate: Installed on 2012-05-12 (1080 days ago)
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
MachineType: System manufacturer System Product Name
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-15-generic root=UUID=d873b110-6709-4b24-95b6-40d55deefe48 ro quiet splash nomdmonddf nomdmonisw init=/sbin/upstart
SourcePackage: systemd
SystemdDelta:
[EXTENDED] /lib/systemd/system/systemd-timesyncd.service → /lib/systemd/system/systemd-timesyncd.service.d/disable-with-time-daemon.conf
1 overridden configuration files found.
UpgradeStatus: Upgraded to vivid on 2015-04-23 (4 days ago)
dmi.bios.date: 09/13/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0602
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: P8Z68-V LX
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.asset.tag: Asset-1234567890
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.version: Chassis Version
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0602:bd09/13/2011:svnSystemmanufacturer:pnSystemProductName:pvrSystemVersion:rvnASUSTeKComputerINC.:rnP8Z68-VLX:rvrRevX.0x:cvnChassisManufacture:ct3:cvrChassisVersion:
dmi.product.name: System Product Name
dmi.product.version: System Version
dmi.sys.vendor: System manufacturer
Status changed to 'Confirmed' because the bug affects multiple users.