Created attachment 121105 [details] systemsettings5_back_trace SUMMARY STEPS TO REPRODUCE 1. Download 'Qogir SDDM' theme here: https://store.kde.org/p/1311077/ 2. Install using "System Settings" -> "Workplace Theme" -> "Desktop Theme" -> "Install from File" OBSERVED RESULT "System Settings" will crash immediately after install. Thereafter, unable to click on or open "Desktop Theme" without crash. Issue persists after reboot. EXPECTED RESULT No crash when clicking on or open "Desktop Theme" SOFTWARE/OS VERSIONS LSB_release: Debian GNU/Linux 9.9 (stretch) KDE Plasma Version: 5.8.6 KDE Frameworks Version: 5.28.0 Qt Version: 5.7.1 ADDITIONAL INFORMATION Attached 'systemsettings5' back trace output.
Kernel: 4.9.0.9-amd64
ADDITIONAL INFO: I tried running `systemsettings5` from the terminal and clicking on `Desktop Theme`. Terminal output: username@domainname:~$ systemsettings5 Icon theme "gnome" not found. Icon theme "ubuntu-mono-dark" not found. Icon theme "Mint-X" not found. Icon theme "elementary" not found. Icon theme "gnome" not found. org.kde.kcoreaddons: Error loading plugin "kcm_lookandfeel" "The shared library was not found." Plugin search paths are ("/usr/lib/x86_64-linux-gnu/qt5/plugins", "/usr/bin") The environment variable QT_PLUGIN_PATH might be not correctly set Trying to use rootObject before initialization is completed, whilst using setInitializationDelayed. Forcing completion org.kde.kcoreaddons: Error loading plugin "kcm_desktoptheme" "The shared library was not found." Plugin search paths are ("/usr/lib/x86_64-linux-gnu/qt5/plugins", "/usr/bin") The environment variable QT_PLUGIN_PATH might be not correctly set "/home/username/.local/share/plasma/desktoptheme/metadata/metadata.desktop" has no desktop group, cannot construct a KPluginInfo object from it. "/home/username/.local/share/plasma/desktoptheme/metadata/metadata.desktop" has no desktop group, cannot construct a KPluginInfo object from it. Accessed invalid KPluginInfo object KCrash: crashing... crashRecursionCounter = 2 KCrash: Application Name = systemsettings5 path = /usr/bin pid = 3259 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 [1]+ Stopped systemsettings5 username@domainname:~$ QSocketNotifier: Invalid socket 9 and type 'Read', disabling... QSocketNotifier: Invalid socket 10 and type 'Read', disabling...
Attempted to reinstall kde-config-sddm. Behavior persists. Terminal output: username@domainname:~$ sudo apt-get install --reinstall kde-config-sddm Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: icedtea-netx icedtea-netx-common Use 'sudo apt autoremove' to remove them. 0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 0 not upgraded. Need to get 82.4 kB of archives. After this operation, 0 B of additional disk space will be used. Get:1 http://ftp.us.debian.org/debian stretch/main amd64 kde-config-sddm amd64 4:5.8.4-1 [82.4 kB] Fetched 82.4 kB in 0s (314 kB/s) (Reading database ... 241571 files and directories currently installed.) Preparing to unpack .../kde-config-sddm_4%3a5.8.4-1_amd64.deb ... Unpacking kde-config-sddm (4:5.8.4-1) over (4:5.8.4-1) ... Setting up kde-config-sddm (4:5.8.4-1) ... Processing triggers for dbus (1.10.28-0+deb9u1) ... username@domainname:~$ systemsettings5 Icon theme "gnome" not found. Icon theme "ubuntu-mono-dark" not found. Icon theme "Mint-X" not found. Icon theme "elementary" not found. Icon theme "gnome" not found. Trying to use rootObject before initialization is completed, whilst using setInitializationDelayed. Forcing completion "/home/username/.local/share/plasma/desktoptheme/metadata/metadata.desktop" has no desktop group, cannot construct a KPluginInfo object from it. "/home/username/.local/share/plasma/desktoptheme/metadata/metadata.desktop" has no desktop group, cannot construct a KPluginInfo object from it. Accessed invalid KPluginInfo object KCrash: crashing... crashRecursionCounter = 2 KCrash: Application Name = systemsettings5 path = /usr/bin pid = 5353 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 [1]+ Stopped systemsettings5 user@debian:~$ QSocketNotifier: Invalid socket 8 and type 'Read', disabling... QSocketNotifier: Invalid socket 12 and type 'Read', disabling... QSocketNotifier: Invalid socket 10 and type 'Read', disabling... ^C [1]+ Exit 253 systemsettings5
Issue was solved by the following: 1. Run: 'mv /home/username/.local/share/plasma/desktoptheme /home/themeowfest/no.desktoptheme' 2. logout -> login Credit: 1. user 'seth' on 'bbs.archlinux.org' 2. https://bbs.archlinux.org/viewtopic.php?id=228763 3. https://web.archive.org/web/20190624043814/https://bbs.archlinux.org/viewtopic.php?id=228763