Home-manager switch - Warning

The user systemd session is degraded:
  UNIT                 LOAD   ACTIVE SUB    DESCRIPTION 
● plasma-kded6.service loaded failed failed KDE Daemon 6

Legend: LOAD   → Reflects whether the unit definition was properly loaded.
        ACTIVE → The high-level unit activation state, i.e. generalization of SUB.
        SUB    → The low-level unit activation state, values depend on unit type.

1 loaded units listed.
Attempting to reload services anyway...

Is this warning important?
How can this problem be solved?

Is this still happening when you restart?
If so then you can check systemctl status whatever.service

No, the system starts and works fine. This happens every time if I do:

home-manager switch

And the other question?

systemctl status plasma-kded6.service  
Unit plasma-kded6.service could not be found.

Oops this was HM, you’d need the --user flag.

$ systemctl status plasma-kded6.service --user
× plasma-kded6.service - KDE Daemon 6
     Loaded: loaded (/home/imbios/.nix-profile/share/systemd/user/plasma-kded6.service; linked-runtime; pre>
     Active: failed (Result: core-dump) since Thu 2024-11-14 15:04:45 CET; 23min ago
   Duration: 954ms
   Main PID: 1471 (code=dumped, signal=SEGV)
        CPU: 636ms

Nov 14 15:04:44 nixos systemd[1235]: Starting KDE Daemon 6...
Nov 14 15:04:44 nixos systemd[1235]: Started KDE Daemon 6.
Nov 14 15:04:45 nixos kded6[1471]: QDBusObjectPath: invalid path "/modules/plasma-session-shortcuts"
Nov 14 15:04:45 nixos kded6[1471]: kf.dbusaddons: The kded module name "plasma-session-shortcuts" is invali>
Nov 14 15:04:45 nixos kded6[1471]: kf.coreaddons: The plugin "/nix/store/pap62ahw39554b7n2d1hp25ngm39fmh4-h>
Nov 14 15:04:45 nixos kded6[1471]: KCrash: appFilePath points to nullptr!
Nov 14 15:04:45 nixos kded6[1471]: KCrash: Application '<unknown>' crashing... crashRecursionCounter = 2
Nov 14 15:04:45 nixos systemd-coredump[1715]: [🡕] Process 1471 (.kded6-wrapped) of user 1000 dumped core.
                                              
                                              Module libdconfsettings.so without build-id.
                                              Module libdatrie.so.1 without build-id.
                                              Module libjson-glib-1.0.so.0 without build-id.
                                              Module libjpeg.so.62 without build-id.
                                              Module libxcb-shm.so.0 without build-id.
                                              Module libxcb-render.so.0 without build-id.
                                              Module libthai.so.0 without build-id.
                                              Module libXinerama.so.1 without build-id.
                                              Module libXrandr.so.2 without build-id.
                                              Module libXcomposite.so.1 without build-id.
                                              Module libXdamage.so.1 without build-id.
                                              Module libtracker-sparql-3.0.so.0 without build-id.
                                              Module libXi.so.6 without build-id.
                                              Module libepoxy.so.0 without build-id.
                                              Module libfribidi.so.0 without build-id.
                                              Module libpangoft2-1.0.so.0 without build-id.
                                              Module libpango-1.0.so.0 without build-id.
                                              Module libpangocairo-1.0.so.0 without build-id.
                                              Module libQt6Sql.so.6 without build-id.
                                              Module libQt6QuickWidgets.so.6 without build-id.
                                              Module libpciaccess.so.0 without build-id.
                                              Module libxml2.so.2 without build-id.
                                              Module libncursesw.so.6 without build-id.
                                              Module libdrm_intel.so.1 without build-id.
                                              Module libdrm_nouveau.so.2 without build-id.
                                              Module libdrm_amdgpu.so.1 without build-id.
                                              Module libdrm_radeon.so.1 without build-id.
                                              Module libsensors.so.5 without build-id.
                                              Module libxshmfence.so.1 without build-id.
                                              Module libxcb-sync.so.1 without build-id.
                                              Module libxcb-present.so.0 without build-id.
                                              Module libxcb-dri3.so.0 without build-id.
                                              Module libdrm.so.2 without build-id.
                                              Module libxcb-xfixes.so.0 without build-id.
                                              Module libxcb-randr.so.0 without build-id.
                                              Module libxcb-dri2.so.0 without build-id.
                                              Module libX11-xcb.so.1 without build-id.
                                              Module libQt6WaylandEglClientHwIntegration.so.6 without build>
                                              Module libqt-plugin-wayland-egl.so without build-id.
                                              Module libunistring.so.5 without build-id.
                                              Module libselinux.so.1 without build-id.
                                              Module libpsl.so.5 without build-id.
                                              Module libssh2.so.1 without build-id.
                                              Module libidn2.so.0 without build-id.
                                              Module libnghttp2.so.14 without build-id.
                                              Module libduktape.so.207 without build-id.
                                              Module libogg.so.0 without build-id.
                                              Module libvorbis.so.0 without build-id.
                                              Module liblzma.so.5 without build-id.
                                              Module libpxbackend-1.0.so without build-id.
                                              Module libkeyutils.so.1 without build-id.
                                              Module libkrb5support.so.0 without build-id.
                                              Module libcom_err.so.3 without build-id.
                                              Module libk5crypto.so.3 without build-id.
                                              Module libkrb5.so.3 without build-id.
                                              Module libusbmuxd-2.0.so.6 without build-id.
                                              Module libimobiledevice-glue-1.0.so.0 without build-id.
                                              Module libltdl.so.7 without build-id.
                                              Module libvorbisfile.so.3 without build-id.
                                              Module libQt6Svg.so.6 without build-id.
                                              Module libproxy.so.1 without build-id.
                                              Module libgssapi_krb5.so.2 without build-id.
                                              Module libplist-2.0.so.4 without build-id.
                                              Module libimobiledevice-1.0.so.6 without build-id.
                                              Module libcanberra.so.0 without build-id.
                                              Module libXrender.so.1 without build-id.
                                              Module libxcb-keysyms.so.1 without build-id.
                                              Module libXfixes.so.3 without build-id.
                                              Module libxcb-res.so.0 without build-id.
                                              Module libQt6PrintSupport.so.6 without build-id.
                                              Module libattr.so.1 without build-id.
                                              Module libacl.so.1 without build-id.
                                              Module libQt6Concurrent.so.6 without build-id.
                                              Module libQt6Core5Compat.so.6 without build-id.
                                              Module libQt6QuickTemplates2.so.6 without build-id.
                                              Module libQt6Network.so.6 without build-id.
                                              Module libQt6Qml.so.6 without build-id.
                                              Module libQt6QmlModels.so.6 without build-id.
                                              Module libQt6OpenGL.so.6 without build-id.
                                              Module libQt6Quick.so.6 without build-id.
                                              Module libXcursor.so.1 without build-id.
                                              Module libQt6QuickControls2.so.6 without build-id.
                                              Module libxdg-shell.so without build-id.
                                              Module libffi.so.8 without build-id.
                                              Module libQt6WaylandClient.so.6 without build-id.
                                              Module libqwayland-generic.so without build-id.
                                              Module libbrotlicommon.so.1 without build-id.
                                              Module libXdmcp.so.6 without build-id.
                                              Module libXau.so.6 without build-id.
                                              Module libgomp.so.1 without build-id.
                                              Module libgraphite2.so.3 without build-id.
                                              Module libpcre2-8.so.0 without build-id.
                                              Module libexpat.so.1 without build-id.
                                              Module libbrotlidec.so.1 without build-id.
                                              Module libbz2.so.1 without build-id.
                                              Module libcap.so.2 without build-id.
                                              Module libxcb.so.1 without build-id.
                                              Module libGLdispatch.so.0 without build-id.
                                              Module libXext.so.6 without build-id.
                                              Module libzstd.so.1 without build-id.
                                              Module libpcre2-16.so.0 without build-id.
                                              Module libb2.so.1 without build-id.
                                              Module libdouble-conversion.so.3 without build-id.
                                              Module libsystemd.so.0 without build-id.
                                              Module libicudata.so.73 without build-id.
                                              Module libicuuc.so.73 without build-id.
                                              Module libicui18n.so.73 without build-id.
                                              Module libz.so.1 without build-id.
                                              Module libfreetype.so.6 without build-id.
                                              Module libmd4c.so.0 without build-id.
                                              Module libharfbuzz.so.0 without build-id.
                                              Module libpng16.so.16 without build-id.
                                              Module libfontconfig.so.1 without build-id.
                                              Module libEGL.so.1 without build-id.
                                              Module libudev.so.1 without build-id.
                                              Module libX11.so.6 without build-id.
                                              Module libQt6Xml.so.6 without build-id.
                                              Module libxkbcommon.so.0 without build-id.
                                              Module libgcc_s.so.1 without build-id.
                                              Module libstdc++.so.6 without build-id.
                                              Module libOpenGL.so.0 without build-id.
                                              Module libGLX.so.0 without build-id.
                                              Module libQt6Core.so.6 without build-id.
                                              Module libQt6DBus.so.6 without build-id.
                                              Module libQt6Gui.so.6 without build-id.
                                              Module libQt6Widgets.so.6 without build-id.
                                              Stack trace of thread 1471:
                                              #0  0x00007efcfeaa2efc __pthread_kill_implementation (libc.so>
                                              #1  0x00007efcfea52e86 raise (libc.so.6 + 0x3fe86)
                                              #2  0x00007efd00ba8aa7 _ZN6KCrash19defaultCrashHandlerEi (lib>
                                              #3  0x00007efcfea52f30 __restore_rt (libc.so.6 + 0x3ff30)
                                              #4  0x00007efccc4b231b _ZN12KDecoration210Decoration11setSett>
                                              #5  0x00007efccc4f2d08 _ZN12KDecoration221DummyDecorationBrid>
                                              #6  0x00007efccc4f173e _ZN25StandardDecorationPainterC1ERK7QS>
                                              #7  0x00007efccc4f0e88 _ZN17DecorationPainter13fromThemeNameE>
                                              #8  0x00007efccc4de676 _ZNK19ConfigValueProvider30windowDecor>
                                              #9  0x00007efccc4d7544 _ZNK9GtkConfig30setWindowDecorationsAp>
                                              #10 0x00007efccc4d9019 _ZNK9GtkConfig16applyAllSettingsEv (gt>
                                              #11 0x00007efccc4d96a6 _ZN9GtkConfigC1EP7QObjectRK5QListI8QVa>
                                              #12 0x00007efccc4d9e69 _ZN14KPluginFactory14createInstanceI9G>
                                              #13 0x000000000040cdc9 _ZN4Kded10loadModuleERK15KPluginMetaDa>
                                              #14 0x000000000040fe6b _ZN4Kded11initModulesEv (.kded6-wrappe>
                                              #15 0x00000000004100c7 _ZN4Kded8recreateEb.part.0 (.kded6-wra>
                                              #16 0x000000000040741c main (.kded6-wrapped + 0x741c)
                                              #17 0x00007efcfea3d10e __libc_start_call_main (libc.so.6 + 0x>
                                              #18 0x00007efcfea3d1c9 __libc_start_main@@GLIBC_2.34 (libc.so>
                                              #19 0x00000000004076f5 _start (.kded6-wrapped + 0x76f5)
                                              
                                              Stack trace of thread 1490:
                                              #0  0x00007efcfeb0f62f __poll (libc.so.6 + 0xfc62f)
                                              #1  0x00007efcedf832b6 _ZN15QtWaylandClient11EventThread3runE>
                                              #2  0x00007efcff32d5f1 _ZN14QThreadPrivate5startEPv (libQt6Co>
                                              #3  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #4  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1489:
                                              #0  0x00007efcfea9dc5e __futex_abstimed_wait_common (libc.so.>
                                              #1  0x00007efcfeaa04c0 pthread_cond_wait@@GLIBC_2.3.2 (libc.s>
                                              #2  0x00007efcff339c1b _ZN14QWaitCondition4waitEP6QMutex14QDe>
                                              #3  0x00007efcedf83247 _ZN15QtWaylandClient11EventThread3runE>
                                              #4  0x00007efcff32d5f1 _ZN14QThreadPrivate5startEPv (libQt6Co>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1478:
                                              #0  0x00007efcfeb0f62f __poll (libc.so.6 + 0xfc62f)
                                              #1  0x00007efcfe7e1f2f g_main_context_iterate_unlocked.isra.0>
                                              #2  0x00007efcfe7e25cc g_main_context_iteration (libglib-2.0.>
                                              #3  0x00007efcff44eb5c _ZN20QEventDispatcherGlib13processEven>
                                              #4  0x00007efcff18eac3 _ZN10QEventLoop4execE6QFlagsINS_17Proc>
                                              #5  0x00007efcff294865 _ZN7QThread4execEv (libQt6Core.so.6 + >
                                              #6  0x00007efd00150fea _ZN22QDBusConnectionManager3runEv (lib>
                                              #7  0x00007efcff32d5f1 _ZN14QThreadPrivate5startEPv (libQt6Co>
                                              #8  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #9  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1510:
                                              #0  0x00007efcfea9dc5e __futex_abstimed_wait_common (libc.so.>
                                              #1  0x00007efcfeaa04c0 pthread_cond_wait@@GLIBC_2.3.2 (libc.s>
                                              #2  0x00007efcddf175e9 cnd_wait (radeonsi_dri.so + 0x1175e9)
                                              #3  0x00007efcddef79db util_queue_thread_func (radeonsi_dri.s>
                                              #4  0x00007efcddf17527 impl_thrd_routine (radeonsi_dri.so + 0>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1512:
                                              #0  0x00007efcfea9dc5e __futex_abstimed_wait_common (libc.so.>
                                              #1  0x00007efcfeaa04c0 pthread_cond_wait@@GLIBC_2.3.2 (libc.s>
                                              #2  0x00007efcddf175e9 cnd_wait (radeonsi_dri.so + 0x1175e9)
                                              #3  0x00007efcddef79db util_queue_thread_func (radeonsi_dri.s>
                                              #4  0x00007efcddf17527 impl_thrd_routine (radeonsi_dri.so + 0>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1511:
                                              #0  0x00007efcfea9dc5e __futex_abstimed_wait_common (libc.so.>
                                              #1  0x00007efcfeaa04c0 pthread_cond_wait@@GLIBC_2.3.2 (libc.s>
                                              #2  0x00007efcddf175e9 cnd_wait (radeonsi_dri.so + 0x1175e9)
                                              #3  0x00007efcddef79db util_queue_thread_func (radeonsi_dri.s>
                                              #4  0x00007efcddf17527 impl_thrd_routine (radeonsi_dri.so + 0>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1513:
                                              #0  0x00007efcfea9dc5e __futex_abstimed_wait_common (libc.so.>
                                              #1  0x00007efcfeaa04c0 pthread_cond_wait@@GLIBC_2.3.2 (libc.s>
                                              #2  0x00007efcddf175e9 cnd_wait (radeonsi_dri.so + 0x1175e9)
                                              #3  0x00007efcddef79db util_queue_thread_func (radeonsi_dri.s>
                                              #4  0x00007efcddf17527 impl_thrd_routine (radeonsi_dri.so + 0>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1695:
                                              #0  0x00007efcfeb0f62f __poll (libc.so.6 + 0xfc62f)
                                              #1  0x00007efcfe7e1f2f g_main_context_iterate_unlocked.isra.0>
                                              #2  0x00007efcfe7e25cc g_main_context_iteration (libglib-2.0.>
                                              #3  0x00007efcfe7e2611 glib_worker_main (libglib-2.0.so.0 + 0>
                                              #4  0x00007efcfe80f3bd g_thread_proxy (libglib-2.0.so.0 + 0x8>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1696:
                                              #0  0x00007efcfeb0f62f __poll (libc.so.6 + 0xfc62f)
                                              #1  0x00007efcfe7e1f2f g_main_context_iterate_unlocked.isra.0>
                                              #2  0x00007efcfe7e25cc g_main_context_iteration (libglib-2.0.>
                                              #3  0x00007efccc01b8bd dconf_gdbus_worker_thread (libdconfset>
                                              #4  0x00007efcfe80f3bd g_thread_proxy (libglib-2.0.so.0 + 0x8>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1694:
                                              #0  0x00007efcfeb1ad1d syscall (libc.so.6 + 0x107d1d)
                                              #1  0x00007efcfe83cd00 g_cond_wait (libglib-2.0.so.0 + 0xb9d0>
                                              #2  0x00007efcfe7ab0bb g_async_queue_pop_intern_unlocked (lib>
                                              #3  0x00007efcfe80fb52 g_thread_pool_spawn_thread (libglib-2.>
                                              #4  0x00007efcfe80f3bd g_thread_proxy (libglib-2.0.so.0 + 0x8>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1697:
                                              #0  0x00007efcfeb0f62f __poll (libc.so.6 + 0xfc62f)
                                              #1  0x00007efcfe7e1f2f g_main_context_iterate_unlocked.isra.0>
                                              #2  0x00007efcfe7e288f g_main_loop_run (libglib-2.0.so.0 + 0x>
                                              #3  0x00007efce68e9526 gdbus_shared_thread_func (libgio-2.0.s>
                                              #4  0x00007efcfe80f3bd g_thread_proxy (libglib-2.0.so.0 + 0x8>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1514:
                                              #0  0x00007efcfea9dc5e __futex_abstimed_wait_common (libc.so.>
                                              #1  0x00007efcfeaa04c0 pthread_cond_wait@@GLIBC_2.3.2 (libc.s>
                                              #2  0x00007efcddf175e9 cnd_wait (radeonsi_dri.so + 0x1175e9)
                                              #3  0x00007efcddef79db util_queue_thread_func (radeonsi_dri.s>
                                              #4  0x00007efcddf17527 impl_thrd_routine (radeonsi_dri.so + 0>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              
                                              Stack trace of thread 1515:
                                              #0  0x00007efcfea9dc5e __futex_abstimed_wait_common (libc.so.>
                                              #1  0x00007efcfeaa04c0 pthread_cond_wait@@GLIBC_2.3.2 (libc.s>
                                              #2  0x00007efcddf175e9 cnd_wait (radeonsi_dri.so + 0x1175e9)
                                              #3  0x00007efcddef79db util_queue_thread_func (radeonsi_dri.s>
                                              #4  0x00007efcddf17527 impl_thrd_routine (radeonsi_dri.so + 0>
                                              #5  0x00007efcfeaa1272 start_thread (libc.so.6 + 0x8e272)
                                              #6  0x00007efcfeb1cdec __clone3 (libc.so.6 + 0x109dec)
                                              ELF object binary architecture: AMD x86-64
Nov 14 15:04:45 nixos systemd[1235]: plasma-kded6.service: Main process exited, code=dumped, status=11/SEGV
Nov 14 15:04:45 nixos systemd[1235]: plasma-kded6.service: Failed with result 'core-dump'.

Hm not sure how to use KCrash, but that doesn’t sound good.

The problem was solved by switching to an unstable channel