Just today my "Display and Monitor" part of system settings crashes. When running from the command line I see this output:

Code: Select all

jdonofrio@NOVCYG0S32:~$ systemsettings5
WARNING: viewBackgroundColor is deprecated, use backgroundColor with colorSet: Theme.View instead
WARNING: viewBackgroundColor is deprecated, use backgroundColor with colorSet: Theme.View instead
WARNING: viewBackgroundColor is deprecated, use backgroundColor with colorSet: Theme.View instead
KActivities: Database connection:  "kactivities_db_resources_140297281394944_readonly"
    query_only:          QVariant(qlonglong, 1)
    journal_mode:        QVariant(QString, "wal")
    wal_autocheckpoint:  QVariant(qlonglong, 100)
    synchronous:         QVariant(qlonglong, 0)
Nothing to load - the client id is empty
Nothing to load - the client id is empty
kscreen: "The shared library was not found."
QObject::connect: invalid null parameter
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = systemsettings5 path = /usr/bin pid = 8724
KCrash: Arguments: /usr/bin/systemsettings5
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi from kdeinit
sock_file=/run/user/1000/kdeinit5__0
Warning: connect() failed: : Connection refused
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi directly
found lsb_release
Using /proc to determine executable path
Executable is: "/usr/bin/systemsettings5"
Executable exists: true
Enabling drkonqi crash catching
org.kde.knotifications: env says KDE is running but SNI unavailable -- check KDE_FULL_SESSION and XDG_CURRENT_DESKTOP
QSocketNotifier: Invalid socket 9 and type 'Read', disabling...
QSocketNotifier: Invalid socket 10 and type 'Read', disabling...
Sending SIGSTOP to process


Does anyone know what is going on here?

I'm using KDE Neon with the latest updates.

I'm getting the same issue. kscreen is installed and is the latest version.

I thought it might have something to do with having Synergy 2 Pro installed, as I use my KDE machine's keyboard/mouse to control my work laptop as well. I haven't been able to figure out how to kill Synergy properly in order to test, however.

I've got my monitors stacked vertically; on reboot they revert to horizontal configuration, and I have to use the Nvidia Settings panel to set them back to vertical again. KDE settings crashes every time I try to start the display settings.

This also appears to be killing KDED, as I am no longer able to access background service management in System Settings.

I updated the libkf5screen7 package with this morning's update payload via Discover, and this seems to be fixed now. Display settings work as expected, and KDED runs normally.

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Package: libkf5screen7
Version: 4:5.12.5-0neon+16.04+xenial+build63
Priority: optional
Section: libs
Source: libkscreen
Maintainer: Neon CI <neon@kde.org>
Installed-Size: 318 kB
Depends: libkf5screen-bin (= 4:5.12.5-0neon+16.04+xenial+build63), libc6 (>= 2.14), libqt5core5a (>= 5.10.0+dfsg), libqt5dbus5 (>= 5.10.0+dfsg), libqt5gui5 (>= 5.10.0+dfsg), libqt5x11extras5, libstdc++6 (>= 4.1.1)
Breaks: libkf5screen5 (<< 4:5.2.0), libkf5screen6
Replaces: libkf5screen5 (<< 4:5.2.0), libkf5screen6
Homepage: https://projects.kde.org/projects/kde/workspace/libkscreen
Download-Size: 88.6 kB
APT-Manual-Installed: no
APT-Sources: http://archive.neon.kde.org/user xenial/main amd64 Packages
Description: library for screen management - shared library
 The KDE multiple monitor support is trying be as smart as possible
 adapting the behavior of it to each use case making the configuration
 of monitors as simple as plugging them to your computer.
 .
 This package contains the shared library

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