Black screen on boot (kcminit_startup crash) #150
Description
The last few builds have been crashing on boot resulting in a black screen. I am able to rollback to this build:
Version: latest.20251101 (2025-11-01T10:16:40Z)
Commit: 03be7a69197e8c606752603900ea33ddeabeea6f2a4dba05b3a424530c6c55f5
And everything works fine. It seems to coincide with the update to KDE 6.5.1. Some searching seems to point to an incomplete package update but it's not clear what package might be at fault (maybe QT?).
Here's a log snippet where things start going bad:
Nov 07 18:14:22 user kwin_wayland_wrapper[2074]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user systemd[1828]: Started xdg-permission-store.service - sandboxed app permission store.
Nov 07 18:14:22 user rtkit-daemon[1355]: Successfully made thread 2105 of process 2072 (/usr/bin/wireplumber) owned by '1000' RT at priority 20.
Nov 07 18:14:22 user systemd[1828]: Starting xdg-document-portal.service - flatpak document portal service...
Nov 07 18:14:22 user systemd[1828]: Started xdg-document-portal.service - flatpak document portal service.
Nov 07 18:14:22 user kwin_wayland_wrapper[2130]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user kwin_wayland_wrapper[2144]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user kwin_wayland_wrapper[2145]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user kwin_wayland_wrapper[2146]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user kwin_wayland_wrapper[2147]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user kwin_wayland_wrapper[2148]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user kwin_wayland_wrapper[2149]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user kwin_wayland_wrapper[2150]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user kernel: r8169 0000:04:00.0 enp4s0: Link is Up - 1Gbps/Full - flow control rx/tx
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.7421] device (enp4s0): carrier: link connected
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.7423] device (enp4s0): state change: unavailable -> disconnected (reason 'carrier-changed', managed-type: 'full')
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.7427] policy: auto-activating connection 'enp4s0' (3c49244c-f503-334b-a6bf-4f073c48a154)
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.7430] device (enp4s0): Activation: starting connection 'enp4s0' (3c49244c-f503-334b-a6bf-4f073c48a154)
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.7430] device (enp4s0): state change: disconnected -> prepare (reason 'none', managed-type: 'full')
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.7431] manager: NetworkManager state is now CONNECTING
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.7433] device (enp4s0): state change: prepare -> config (reason 'none', managed-type: 'full')
Nov 07 18:14:22 user audit[1492]: NETFILTER_CFG table=firewalld:7 family=1 entries=26 op=nft_register_rule pid=1492 subj=system_u:system_r:firewalld_t:s0 comm="firewalld"
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.7521] device (enp4s0): state change: config -> ip-config (reason 'none', managed-type: 'full')
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.7525] dhcp4 (enp4s0): activation: beginning transaction (timeout in 45 seconds)
Nov 07 18:14:22 user kwin_wayland_wrapper[2151]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user kwin_wayland_wrapper[2152]: /usr/bin/kwin_wayland: symbol lookup error: /lib64/libkwin.so.6: undefined symbol: _ZN12KDecoration310Decoration20borderOutlineChangedEv
Nov 07 18:14:22 user kcminit_startup[2094]: qt.qpa.wayland: "wl-shell" is a deprecated shell extension, prefer using "xdg-shell" if supported by the compositor by setting the environment variable QT_WAYLAND_SHE>
Nov 07 18:14:22 user kcminit_startup[2094]: qt.qpa.wayland: Loading shell integration failed.
Nov 07 18:14:22 user kcminit_startup[2094]: qt.qpa.wayland: Attempted to load the following shells QList("xdg-shell", "wl-shell", "ivi-shell", "qt-shell")
Nov 07 18:14:22 user ModemManager[1489]: <msg> [base-manager] couldn't check support for device '/sys/devices/pci0000:00/0000:00:01.2/0000:01:00.0/0000:02:03.0/0000:04:00.0': not supported by any plugin
Nov 07 18:14:22 user ModemManager[1489]: <msg> [base-manager] couldn't check support for device '/sys/devices/pci0000:00/0000:00:01.2/0000:01:00.0/0000:02:05.0/0000:05:00.0': not supported by any plugin
Nov 07 18:14:22 user ModemManager[1489]: <msg> [base-manager] couldn't check support for device '/sys/devices/pci0000:00/0000:00:01.2/0000:01:00.0/0000:02:06.0/0000:06:00.0': not supported by any plugin
Nov 07 18:14:22 user kcminit_startup[2094]: qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found.
Nov 07 18:14:22 user kcminit_startup[2094]: qt.qpa.xcb: could not connect to display :0
Nov 07 18:14:22 user kcminit_startup[2094]: qt.qpa.plugin: From 6.5.0, xcb-cursor0 or libxcb-cursor0 is needed to load the Qt xcb platform plugin.
Nov 07 18:14:22 user audit[2094]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=2 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=2094 comm="kcminit_startup" exe="/usr/bin/kcminit" sig=6 res=1
Nov 07 18:14:22 user kcminit_startup[2094]: qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
Nov 07 18:14:22 user kcminit_startup[2094]: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vkkhrdisplay, vnc, wayland-egl, wayland, xcb.
Nov 07 18:14:22 user systemd-coredump[2154]: Process 2094 (kcminit_startup) of user 1000 terminated abnormally with signal 6/ABRT, processing...
Nov 07 18:14:22 user audit: BPF prog-id=93 op=LOAD
Nov 07 18:14:22 user audit: BPF prog-id=94 op=LOAD
Nov 07 18:14:22 user audit: BPF prog-id=95 op=LOAD
Nov 07 18:14:22 user audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredump@0-2154-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostnam>
Nov 07 18:14:22 user systemd[1]: Created slice system-systemd\x2dcoredump.slice - Slice /system/systemd-coredump.
Nov 07 18:14:22 user systemd[1]: Started systemd-coredump@0-2154-0.service - Process Core Dump (PID 2154/UID 0).
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.9231] dhcp4 (enp4s0): state changed new lease, address=192.168.1.5
Nov 07 18:14:22 user avahi-daemon[1343]: Joining mDNS multicast group on interface enp4s0.IPv4 with address 192.168.1.5.
Nov 07 18:14:22 user avahi-daemon[1343]: New relevant interface enp4s0.IPv4 for mDNS.
Nov 07 18:14:22 user avahi-daemon[1343]: Registering new address record for 192.168.1.5 on enp4s0.IPv4.
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.9237] policy: set 'enp4s0' (enp4s0) as default for IPv4 routing and DNS
Nov 07 18:14:22 user systemd-resolved[1262]: enp4s0: Bus client set search domain list to: lan
Nov 07 18:14:22 user systemd-resolved[1262]: enp4s0: Bus client set default route setting: yes
Nov 07 18:14:22 user systemd-resolved[1262]: enp4s0: Bus client set DNS server list to: 192.168.1.253
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.9346] device (enp4s0): state change: ip-config -> ip-check (reason 'none', managed-type: 'full')
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.9357] device (enp4s0): state change: ip-check -> secondaries (reason 'none', managed-type: 'full')
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.9358] device (enp4s0): state change: secondaries -> activated (reason 'none', managed-type: 'full')
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.9360] manager: NetworkManager state is now CONNECTED_SITE
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.9360] device (enp4s0): Activation: successful, device activated.
Nov 07 18:14:22 user NetworkManager[1639]: <info> [1762499662.9362] manager: NetworkManager state is now CONNECTED_GLOBAL
Nov 07 18:14:22 user audit[1]: USER_AVC pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='avc: denied { reload } for auid=n/a uid=0 gid=0 path="/etc/systemd/system/iscsi.service>
Nov 07 18:14:23 user systemd-coredump[2158]: [🡕] Process 2094 (kcminit_startup) of user 1000 dumped core.
Module libuuid.so.1 from rpm util-linux-2.40.4-7.fc42.x86_64
Module libxcb-util.so.1 from rpm xcb-util-0.4.1-7.fc42.x86_64
Module libxkbcommon-x11.so.0 from rpm libxkbcommon-1.8.1-1.fc42.x86_64
Module libICE.so.6 from rpm libICE-1.1.2-2.fc42.x86_64
Module libSM.so.6 from rpm libSM-1.2.5-2.fc42.x86_64
Module libX11-xcb.so.1 from rpm libX11-1.8.12-1.fc42.x86_64
Module libxcb-xkb.so.1 from rpm libxcb-1.17.0-5.fc42.x86_64
Module libxcb-xfixes.so.0 from rpm libxcb-1.17.0-5.fc42.x86_64
Module libxcb-sync.so.1 from rpm libxcb-1.17.0-5.fc42.x86_64
Module libxcb-shm.so.0 from rpm libxcb-1.17.0-5.fc42.x86_64
Module libxcb-shape.so.0 from rpm libxcb-1.17.0-5.fc42.x86_64
Module libxcb-render-util.so.0 from rpm xcb-util-renderutil-0.3.10-7.fc42.x86_64
Module libxcb-render.so.0 from rpm libxcb-1.17.0-5.fc42.x86_64
Module libxcb-randr.so.0 from rpm libxcb-1.17.0-5.fc42.x86_64
Module libxcb-keysyms.so.1 from rpm xcb-util-keysyms-0.4.1-7.fc42.x86_64
Module libxcb-image.so.0 from rpm xcb-util-image-0.4.1-7.fc42.x86_64
Module libxcb-icccm.so.4 from rpm xcb-util-wm-0.4.2-7.fc42.x86_64
Module libxcb-cursor.so.0 from rpm xcb-util-cursor-0.1.5-3.fc42.x86_64
Module libQt6XcbQpa.so.6 from rpm qt6-qtbase-6.9.2-1.fc42.x86_64
Module libqxcb.so from rpm qt6-qtbase-6.9.2-1.fc42.x86_64
Module libqt-shell.so from rpm qt6-qtwayland-6.9.2-1.fc42.x86_64
Module libivi-shell.so from rpm qt6-qtwayland-6.9.2-1.fc42.x86_64
Module libQt6WlShellIntegration.so.6 from rpm qt6-qtwayland-6.9.2-1.fc42.x86_64
Module libwl-shell-plugin.so from rpm qt6-qtwayland-6.9.2-1.fc42.x86_64
Module libxdg-shell.so from rpm qt6-qtwayland-6.9.2-1.fc42.x86_64
Module libffi.so.8 from rpm libffi-3.4.6-5.fc42.x86_64
Module libwayland-cursor.so.0 from rpm wayland-1.24.0-1.fc42.x86_64
Module libwayland-client.so.0 from rpm wayland-1.24.0-1.fc42.x86_64
Module libQt6WaylandClient.so.6 from rpm qt6-qtwayland-6.9.2-1.fc42.x86_64
Module libqwayland-generic.so from rpm qt6-qtwayland-6.9.2-1.fc42.x86_64
Module libbrotlicommon.so.1 from rpm brotli-1.1.0-6.fc42.x86_64
Module libXau.so.6 from rpm libXau-1.0.12-2.fc42.x86_64
Module liblzma.so.5 from rpm xz-5.8.1-2.fc42.x86_64
Module libicudata.so.76 from rpm icu-76.1-4.fc42.x86_64
Module libbrotlidec.so.1 from rpm brotli-1.1.0-6.fc42.x86_64
Module libbz2.so.1 from rpm bzip2-1.0.8-20.fc42.x86_64
Module libgraphite2.so.3 from rpm graphite2-1.3.14-18.fc42.x86_64
Module libXext.so.6 from rpm libXext-1.3.6-3.fc42.x86_64
Module libpcre2-8.so.0 from rpm pcre2-10.45-1.fc42.x86_64
Module libxcb.so.1 from rpm libxcb-1.17.0-5.fc42.x86_64
Module libxml2.so.2 from rpm libxml2-2.12.10-1.fc42.x86_64
Module libGLdispatch.so.0 from rpm libglvnd-1.7.0-7.fc42.x86_64
Module libcap.so.2 from rpm libcap-2.73-2.fc42.x86_64
Module libcrypto.so.3 from rpm openssl-3.2.6-2.fc42.x86_64
Module libpcre2-16.so.0 from rpm pcre2-10.45-1.fc42.x86_64
Module libb2.so.1 from rpm libb2-0.98.1-13.fc42.x86_64
Module libdouble-conversion.so.3 from rpm double-conversion-3.3.1-1.fc42.x86_64
Module libsystemd.so.0 from rpm systemd-257.10-1.fc42.x86_64
Module libzstd.so.1 from rpm zstd-1.5.7-1.fc42.x86_64
Module libicuuc.so.76 from rpm icu-76.1-4.fc42.x86_64
Module libicui18n.so.76 from rpm icu-76.1-4.fc42.x86_64
Module libdbus-1.so.3 from rpm dbus-1.16.0-3.fc42.x86_64
Module libz.so.1 from rpm zlib-ng-2.2.5-2.fc42.x86_64
Module libfreetype.so.6 from rpm freetype-2.13.3-2.fc42.x86_64
Module libharfbuzz.so.0 from rpm harfbuzz-10.4.0-1.fc42.x86_64
Module libpng16.so.16 from rpm libpng-1.6.44-2.fc42.x86_64
Module libOpenGL.so.0 from rpm libglvnd-1.7.0-7.fc42.x86_64
Module libGLX.so.0 from rpm libglvnd-1.7.0-7.fc42.x86_64
Module libxkbcommon.so.0 from rpm libxkbcommon-1.8.1-1.fc42.x86_64
Module libglib-2.0.so.0 from rpm glib2-2.84.4-1.fc42.x86_64
Module libX11.so.6 from rpm libX11-1.8.12-1.fc42.x86_64
Module libfontconfig.so.1 from rpm fontconfig-2.16.0-2.fc42.x86_64
Module libEGL.so.1 from rpm libglvnd-1.7.0-7.fc42.x86_64
Module libudev.so.1 from rpm systemd-257.10-1.fc42.x86_64
Module libQt6Core.so.6 from rpm qt6-qtbase-6.9.2-1.fc42.x86_64
Module libQt6DBus.so.6 from rpm qt6-qtbase-6.9.2-1.fc42.x86_64
Module libQt6Gui.so.6 from rpm qt6-qtbase-6.9.2-1.fc42.x86_64
Module libKF6I18n.so.6 from rpm kf6-ki18n-6.19.0-1.fc42.x86_64
Module libKF6CoreAddons.so.6 from rpm kf6-kcoreaddons-6.19.0-1.fc42.x86_64
Stack trace of thread 2094:
#0 0x00007f8403e53e9c __pthread_kill_implementation (libc.so.6 + 0x73e9c)
#1 0x00007f8403df9f3e raise (libc.so.6 + 0x19f3e)
#2 0x00007f8403de16d0 abort (libc.so.6 + 0x16d0)
#3 0x00007f8404263d5c _Z6qAbortv (libQt6Core.so.6 + 0x1ad5c)
#4 0x00007f84042b72f8 _ZL10qt_message9QtMsgTypeRK18QMessageLogContextPKcP13__va_list_tag (libQt6Core.so.6 + 0x6e2f8)
#5 0x00007f840426535c _ZNK14QMessageLogger5fatalEPKcz (libQt6Core.so.6 + 0x1c35c)
#6 0x00007f8404a0fd4b _ZL13init_platformRK7QStringS1_S1_RiPPc.cold (libQt6Gui.so.6 + 0x2dd4b)
#7 0x00007f8404ac837b _ZN22QGuiApplicationPrivate25createPlatformIntegrationEv (libQt6Gui.so.6 + 0xe637b)
#8 0x00007f8404ac8f78 _ZN22QGuiApplicationPrivate21createEventDispatcherEv (libQt6Gui.so.6 + 0xe6f78)
#9 0x00007f840434b5ed _ZN23QCoreApplicationPrivate4initEv (libQt6Core.so.6 + 0x1025ed)
#10 0x00007f8404acd58d _ZN22QGuiApplicationPrivate4initEv (libQt6Gui.so.6 + 0xeb58d)
#11 0x00007f8404acf109 _ZN15QGuiApplicationC1ERiPPci (libQt6Gui.so.6 + 0xed109)
#12 0x000055a179859ff1 n/a (/4e/edd076f3479cf95f06fadc7df40d8feae323f8f770af4f59a6f330deaefbc4.file + 0xff1)
#13 0x00007f8403de3575 __libc_start_call_main (libc.so.6 + 0x3575)
#14 0x00007f8403de3628 __libc_start_main@@GLIBC_2.34 (libc.so.6 + 0x3628)
#15 0x000055a17985b4c5 n/a (/4e/edd076f3479cf95f06fadc7df40d8feae323f8f770af4f59a6f330deaefbc4.file + 0x24c5)
ELF object binary architecture: AMD x86-64
Nov 07 18:14:23 user audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=systemd-coredump@0-2154-0 comm="systemd" exe="/usr/lib/systemd/systemd" hostname>
Nov 07 18:14:23 user systemd[1]: systemd-coredump@0-2154-0.service: Deactivated successfully.
Nov 07 18:14:23 user systemd[1828]: Started plasma-kcminit.service - KDE Config Module Initialization.
Nov 07 18:14:23 user systemd[1828]: Starting plasma-ksmserver.service - KDE Session Management Server...
Nov 07 18:14:23 user systemd[1828]: Started plasma-kwallet-pam.service - Unlock kwallet from pam credentials.
Nov 07 18:14:23 user systemd[1828]: Starting plasma-kded6.service - KDE Daemon 6...
Nov 07 18:14:23 user audit: BPF prog-id=95 op=UNLOAD
Nov 07 18:14:23 user audit: BPF prog-id=94 op=UNLOAD
Nov 07 18:14:23 user audit: BPF prog-id=93 op=UNLOAD
Nov 07 18:14:23 user kded6[2203]: Failed to create wl_display (No such file or directory)
Nov 07 18:14:23 user kded6[2203]: qt.qpa.plugin: Could not load the Qt platform plugin "wayland" in "" even though it was found.
Nov 07 18:14:23 user audit[2203]: ANOM_ABEND auid=1000 uid=1000 gid=1000 ses=2 subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023 pid=2203 comm="kded6" exe="/usr/bin/kded6" sig=6 res=1
Nov 07 18:14:23 user kded6[2203]: This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vkkhrdisplay, vnc, wayland-egl, wayland, xcb.
Nov 07 18:14:23 user systemd-coredump[2207]: Process 2203 (kded6) of user 1000 terminated abnormally with signal 6/ABRT, processing...