Instead of Plasma session starting from the greeter, or using startx, two popup windows result: first: klauncher closed unexpectedly (segmentation fault) after some wait: ksplashqml closed unexpectedly (segmentation fault)

# cat .xsession-errors Environment variable $XAUTHORITY not set, ignoring. /etc/X11/xim: Checking whether an input method should be started. sourcing /etc/sysconfig/language to get the value of INPUT_METHOD INPUT_METHOD is not set or empty (no user selected input method). Trying to start a default input method for the locale en_US.UTF-8 ... There is no default input method for the current locale. Dummy input method "none" (do not use any fancy input method by default) gpg-connect-agent: no gpg-agent running in this session gpg-connect-agent: no gpg-agent running in this session KCrash: Application 'ksplashqml' crashing... KCrash: Attempting to start /usr/lib64/libexec/drkonqi KCrash: Application 'klauncher' crashing... kdeinit5: Communication error with launcher. Exiting! KCrash: Attempting to start /usr/lib64/libexec/drkonqi KCrash: Application 'org_kde_powerdevil' crashing... KCrash: Attempting to start /usr/lib64/libexec/drkonqi Unable to start Dr. Konqi Re-raising signal for core dump handling. Unable to start Dr. Konqi Re-raising signal for core dump handling. kwin: unable to claim manager selection, another wm running? (try using --replace)

[code]# zypper rm --clean-deps plasma5-workspace-libs plasma5-workspace plasma5-session plasma-framework libKF5Plasma5 libKF5Purpose5 libKF5Plasma5 libKF5Declarative5 libKF5Runner5 # zypper rm --clean-deps libKF5Solid5 libKF5DBusAddons5 libKF5CoreAddons5 libKF5WidgetsAddons5 libKF5WindowSystem5 libKF5XmlGui5 # zypper -v in plasma5-workspace plasma5-session systemsettings5[/code]

Over 200 packages were removed, and 211 installed, but this failed to solve the problem - twice. I searched the whole /usr/ filesystem tree looking for *launche*, before and after the reinstallations, and could not find klauncher (actually, nothing was returned from searching for *launch*).

IceWM sessions work normally, so there can't be anything wrong with Xorg.

TDE sessions open normally, but are peppered by a continuous series of popups generated by kglobalaccel5, unless I reboot after attempting to open a Plasma session, in which case it produces the following: # inxi -SMCz System: Host: ara88 Kernel: 5.14.21-150400.22-default arch: x86_64 bits: 64 Desktop: Trinity v: R14.0.12 Distro: openSUSE Leap 15.4 Machine: Type: Desktop Mobo: ASRock model: FM2A88X Extreme6+ serial: <filter> UEFI: American Megatrends v: P4.20 date: 01/13/2016 CPU: Info: quad core model: AMD PRO A8-8650B R7 10 Compute Cores 4C+6G bits: 64 type: MT MCP cache: L2: 4 MiB Speed (MHz): avg: 1400 min/max: 1400/3200 cores: 1: 1400 2: 1400 3: 1400 4: 1400 # inxi -Gaz Graphics: Device-1: AMD Kaveri [Radeon R7 Graphics] vendor: ASRock driver: amdgpu v: kernel alternate: radeon arch: GCN 2 process: GF/TSMC 16-28nm built: 2013-17 ports: active: DP-1,DVI-D-1,HDMI-A-1 empty: VGA-1 bus-ID: 00:01.0 chip-ID: 1002:1313 class-ID: 0300 Display: x11 server: X.Org v: 1.20.3 driver: X: loaded: modesetting gpu: amdgpu display-ID: :0 screens: 1 Screen-1: 0 s-res: 2560x3720 s-dpi: 120 s-size: 541x787mm (21.30x30.98") s-diag: 955mm (37.6") Monitor-1: DP-1 pos: primary,bottom model: Acer K272HUL serial: <filter> built: 2018 res: 2560x1440 hz: 60 dpi: 109 gamma: 1.2 size: 598x336mm (23.54x13.23") diag: 686mm (27") ratio: 16:9 modes: max: 2560x1440 min: 720x400 Monitor-2: DVI-D-1 pos: middle model: NEC EA243WM serial: <filter> built: 2011 res: 1920x1200 hz: 60 dpi: 94 gamma: 1.2 size: 519x324mm (20.43x12.76") diag: 612mm (24.1") ratio: 16:10 modes: max: 1920x1200 min: 640x480 Monitor-3: HDMI-A-1 mapped: HDMI-1 pos: primary,top model: Samsung built: 2009 res: 1920x1080 hz: 60 dpi: 305 gamma: 1.2 size: 160x90mm (6.3x3.54") diag: 184mm (7.2") ratio: 16:9 modes: max: 1920x1080 min: 720x400 OpenGL: renderer: AMD KAVERI (DRM 3.42.0 5.14.21-150400.22-default LLVM 11.0.1) v: 4.6 Mesa 21.2.4 direct render: Yes

Wiping out ~/.cache/* and KDE/Plasma files/directories in ~/.config/ helped none AFAICT.

# ps -A (tail; while running a TDE session, following a Plasma session attempt) 919 ? 00:00:00 (sd-pam) 960 ? 00:00:00 dbus-daemon 1041 ? 00:00:00 kwin_x11 1074 ? 00:00:00 ksmserver 1253 ? 00:00:00 dconf-service 1345 ? 00:00:00 dcopserver 1353 ? 00:00:00 in.telnetd 1354 ? 00:00:00 login 1355 pts/0 00:00:00 bash 1441 ? 00:00:00 systemd-localed 1446 ? 00:00:00 tdm 1448 tty7 00:00:01 X 1463 ? 00:00:00 tdm 1464 ? 00:00:00 tdm_greet 1465 ? 00:00:00 tdekbdledsync 1470 ? 00:00:00 krootimage 1473 ? 00:00:00 twin 1475 ? 00:00:00 dcopserver 1485 ? 00:00:00 udisksd 1489 ? 00:00:00 polkitd 1500 ? 00:00:00 systemd-udevd 1569 pts/0 00:00:00 ps

Journal from fresh boot, then attempting to start Plasma: https://paste.opensuse.org/50832894

PC is multiboot with 15.3, in which Plasma works normally, and from which a clone was made and upgraded to create this 15.4 before its final release.

Where do I look to find the root of this problem, particularly the location of crashers klauncher & ksplashqml, to find out what rpms provide them?