Continous crashing of kscreenlocker_greet

[Paul Cullum]

1) The release of Ubuntu you are using, via 'lsb_release -rd' or System -> About Ubuntu
 Description: Ubuntu 15.04
 Release: 15.04

2) The version of the package you are using, via 'apt-cache policy pkgname' or by checking in Software Center
plasma-workspace:
  Installed: 4:5.2.2-0ubuntu3
  Candidate: 4:5.2.2-0ubuntu3
  Version table:
 *** 4:5.2.2-0ubuntu3 0
        500 http://ca.archive.ubuntu.com/ubuntu/ vivid/universe amd64 Packages
        100 /var/lib/dpkg/status

3) What you expected to happen
 That kscreenlocker_greet not continuously crash.

4) What happened instead
 kscreenlocker_greet crashes

I upgraded from 14.10 to 15.04 yesterday. Following the upgrade it seemed as though the load average seemed higher than it ought to be. While investigating what was going on I noticed that new apport processes were being spawned continuously. Looking in apport.log I found this was being written out at a fairly high rate:

ERROR: apport (pid 4310) Wed Apr 29 15:32:21 2015: debug: session gdbus call:
ERROR: apport (pid 4310) Wed Apr 29 15:32:21 2015: this executable already crashed 2 times, ignoring
ERROR: apport (pid 4314) Wed Apr 29 15:32:21 2015: called for pid 4313, signal 6, core limit 0
ERROR: apport (pid 4314) Wed Apr 29 15:32:21 2015: executable: /usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet (command line "/usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet --immediateLock --ksldfd 44")
ERROR: apport (pid 4314) Wed Apr 29 15:32:21 2015: gdbus call error: Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

ERROR: apport (pid 4314) Wed Apr 29 15:32:21 2015: debug: session gdbus call:
ERROR: apport (pid 4314) Wed Apr 29 15:32:21 2015: this executable already crashed 2 times, ignoring
ERROR: apport (pid 4318) Wed Apr 29 15:32:22 2015: called for pid 4317, signal 6, core limit 0
ERROR: apport (pid 4318) Wed Apr 29 15:32:22 2015: executable: /usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet (command line "/usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet --immediateLock --ksldfd 44")
ERROR: apport (pid 4318) Wed Apr 29 15:32:22 2015: gdbus call error: Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

ERROR: apport (pid 4318) Wed Apr 29 15:32:22 2015: debug: session gdbus call:
ERROR: apport (pid 4318) Wed Apr 29 15:32:22 2015: this executable already crashed 2 times, ignoring
ERROR: apport (pid 4322) Wed Apr 29 15:32:22 2015: called for pid 4321, signal 6, core limit 0
ERROR: apport (pid 4322) Wed Apr 29 15:32:22 2015: executable: /usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet (command line "/usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet --immediateLock --ksldfd 44")
ERROR: apport (pid 4322) Wed Apr 29 15:32:22 2015: gdbus call error: Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

ERROR: apport (pid 4322) Wed Apr 29 15:32:22 2015: debug: session gdbus call:
ERROR: apport (pid 4322) Wed Apr 29 15:32:22 2015: this executable already crashed 2 times, ignoring
ERROR: apport (pid 4326) Wed Apr 29 15:32:22 2015: called for pid 4325, signal 6, core limit 0
ERROR: apport (pid 4326) Wed Apr 29 15:32:22 2015: executable: /usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet (command line "/usr/lib/x86_64-linux-gnu/libexec/kscreenlocker_greet --immediateLock --ksldfd 44")
ERROR: apport (pid 4326) Wed Apr 29 15:32:22 2015: gdbus call error: Error: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: plasma-workspace 4:5.2.2-0ubuntu3
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CurrentDesktop: KDE
Date: Wed Apr 29 15:32:39 2015
InstallationDate: Installed on 2012-10-18 (923 days ago)
InstallationMedia: Kubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120820.1)
SourcePackage: plasma-workspace
UpgradeStatus: Upgraded to vivid on 2015-04-28 (0 days ago)

[Paul Cullum (paul-cullum)]

I should add that I tried to upgrade to Plasma 5.3.0 (from ppa:kubuntu-ppa/backports) to see if that would fix the problem. It didn't. Then I had to downgrade back to 5.2.2 so that I could file the report against the official package.

[Paul Cullum (paul-cullum)]

Adding apport crash report.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alberto Salvia Novella (es20490446e)]

Please:
  1. Report to <https://bugs.kde.org/>.
  2. Paste the new report URL here.
  3. Set this bug status back to "confirmed".

Thank you.

[Manuel Quinteiro (mquinteiro)]

Same here with Plasma 5.3.2

[Scarlett Gately Moore (scarlettmoore)]

This bug is very old, if it remains an issue please update the bug with info from a supported release.