https://bugs.kde.org/show_bug.cgi?id=516958
--- Comment #2 from dinghy <[email protected]> --- (In reply to TraceyC from comment #1) > Thanks for the bug report. There are a couple of things you can do to get us > information we can use to find out what's causing the system to freeze. > > 1. Get system logs > - After triggering the freeze, and logging back in, run this to get the > logs. Adjust the time to just a minute or two before you triggered the > crash. This will create a file you can attach to this report. > > sudo journalctl --since -10min > ~/logs.txt > > 2. Check if there's a coredump related to plasmashell, kwin or > kscreenlocker. > - Open the Crashed Processes Viewer > - If there's a related coredump, clck on it > - Click "Copy to Clipboard" and paste that into a text file > - Attach the text file to this report > > Thanks! Hi Tracey, thanks a lot for this little guideline. As you explained, I did and at minute 8:57 I locked my screen with ctr + l, then clicked on "switch user". I kept it for 1 minute like that and then turned off the computer. (In reply to TraceyC from comment #1) > Thanks for the bug report. There are a couple of things you can do to get us > information we can use to find out what's causing the system to freeze. > > 1. Get system logs > - After triggering the freeze, and logging back in, run this to get the > logs. Adjust the time to just a minute or two before you triggered the > crash. This will create a file you can attach to this report. > > sudo journalctl --since -10min > ~/logs.txt > > 2. Check if there's a coredump related to plasmashell, kwin or > kscreenlocker. > - Open the Crashed Processes Viewer > - If there's a related coredump, clck on it > - Click "Copy to Clipboard" and paste that into a text file > - Attach the text file to this report > > Thanks! Hey Tracey, thanks a lot for the guideline and looking into this! As you explained I attached the logs from what happened when I locked the screen and clicked on "switch user". I renamed the username to "USER" and I think the relevant bits are these: Mär 03 08:57:03 USER kscreenlocker_greet[4277]: pam_warn(kde-smartcard:auth): function=[pam_sm_authenticate] flags=0 service=[kde-smartcard] terminal=[<unknown>] user=[USER] ruser=[<unknown>] rhost=[<unknown>] Mär 03 08:57:03 USER kscreenlocker_greet[4277]: pam_warn(kde-fingerprint:auth): function=[pam_sm_authenticate] flags=0 service=[kde-fingerprint] terminal=[<unknown>] user=[USER] ruser=[<unknown>] rhost=[<unknown>] Mär 03 08:57:04 USER systemd[1]: Started PC/SC Smart Card Daemon. Mär 03 08:57:07 USER sddm[1517]: Adding new display... Mär 03 08:57:07 USER sddm[1517]: Loaded empty theme configuration Mär 03 08:57:07 USER sddm[1517]: Using VT 1 Mär 03 08:57:07 USER sddm[1517]: Display server started. Mär 03 08:57:07 USER sddm[1517]: Socket server starting... Mär 03 08:57:07 USER sddm[1517]: Socket server started. Mär 03 08:57:07 USER sddm[1517]: Loading theme configuration from "/run/current-system/sw/share/sddm/themes/breeze/theme.conf" Mär 03 08:57:07 USER sddm[1517]: Greeter starting... Mär 03 08:57:07 USER sddm-helper[4390]: [PAM] Starting... Mär 03 08:57:07 USER sddm-helper[4390]: [PAM] Authenticating... Mär 03 08:57:07 USER sddm-helper[4390]: [PAM] returning. Mär 03 08:57:07 USER systemd[1]: Created slice Slice /user/175. Mär 03 08:57:07 USER systemd[1]: Starting User Runtime Directory /run/user/175... Mär 03 08:57:07 USER systemd-logind[1299]: New session 'c1' of user 'sddm' with class 'greeter' and type 'wayland'. Mär 03 08:57:07 USER kded6[1908]: No object for name "alsa_input.pci-0000_00_1f.3.analog-stereo" Mär 03 08:57:07 USER kded6[1908]: No object for name "alsa_output.pci-0000_00_1f.3.analog-stereo" Mär 03 08:57:07 USER plasmashell[1978]: No object for name "alsa_input.pci-0000_00_1f.3.analog-stereo" Mär 03 08:57:07 USER kded6[1908]: No object for name "alsa_input.pci-0000_00_1f.3.analog-stereo" Mär 03 08:57:07 USER plasmashell[1978]: No object for name "alsa_output.pci-0000_00_1f.3.analog-stereo" Mär 03 08:57:07 USER plasmashell[1978]: No object for name "alsa_input.pci-0000_00_1f.3.analog-stereo" Mär 03 08:57:07 USER systemd[1606]: Reached target Smart Card. Mär 03 08:57:07 USER kded6[1908]: No object for name "@DEFAULT_SINK@" Mär 03 08:57:07 USER kded6[1908]: No object for name "@DEFAULT_SOURCE@" Mär 03 08:57:07 USER systemd[1]: Finished User Runtime Directory /run/user/175. Mär 03 08:57:07 USER systemd[1]: Starting User Manager for UID 175... Mär 03 08:57:07 USER systemd[1606]: Reached target Sound Card. Mär 03 08:57:07 USER org_kde_powerdevil[2147]: [ 2413] Udev event detected Mär 03 08:57:07 USER plasmashell[1978]: No object for name "@DEFAULT_SINK@" Mär 03 08:57:07 USER plasmashell[1978]: No object for name "@DEFAULT_SOURCE@" Mär 03 08:57:07 USER plasmashell[1978]: No object for name "@DEFAULT_SINK@" Mär 03 08:57:07 USER plasmashell[1978]: No object for name "@DEFAULT_SOURCE@" Mär 03 08:57:07 USER (systemd)[4423]: pam_unix(systemd-user:session): session opened for user sddm(uid=175) by (uid=0) Mär 03 08:57:07 USER plasmashell[1978]: No object for name "auto_null.monitor" Mär 03 08:57:07 USER kded6[1908]: No object for name "@DEFAULT_SINK@" Mär 03 08:57:07 USER kded6[1908]: No object for name "@DEFAULT_SOURCE@" Mär 03 08:57:07 USER kded6[1908]: No object for name "auto_null.monitor" Mär 03 08:57:07 USER systemd-logind[1299]: New session '3' of user 'sddm' with class 'manager-early' and type 'unspecified'. Mär 03 08:57:07 USER systemd[4423]: Queued start job for default target Main User Target. Mär 03 08:57:07 USER systemd[4423]: Created slice User Application Slice. Mär 03 08:57:07 USER systemd[4423]: Started Submitting pending crash events (file monitor). Mär 03 08:57:07 USER systemd[4423]: Cleanup lingering KCrash metadata was skipped because of an unmet condition check (ConditionPathExistsGlob=/var/lib/sddm/.cache/kcrash-metadata/*.ini). Mär 03 08:57:07 USER systemd[4423]: Submitting pending crash events was skipped because of an unmet condition check (ConditionPathExistsGlob=/var/lib/sddm/.cache/drkonqi/sentry-envelopes/*). Mär 03 08:57:07 USER systemd[4423]: Started Daily Cleanup of User's Temporary Directories. Mär 03 08:57:07 USER systemd[4423]: Reached target Paths. Mär 03 08:57:07 USER systemd[4423]: Reached target Timers. Mär 03 08:57:07 USER systemd[4423]: Starting D-Bus User Message Bus Socket... Mär 03 08:57:07 USER systemd[4423]: Socket to launch DrKonqi for a systemd-coredump crash was skipped because of an unmet condition check (ConditionUser=!@system). Mär 03 08:57:07 USER systemd[4423]: Listening on GnuPG cryptographic agent (ssh-agent emulation). Mär 03 08:57:07 USER systemd[4423]: Listening on GnuPG cryptographic agent and passphrase cache. Mär 03 08:57:07 USER systemd[4423]: Listening on PipeWire PulseAudio. Mär 03 08:57:07 USER systemd[4423]: Listening on PipeWire Multimedia System Sockets. Mär 03 08:57:07 USER systemd[4423]: Listening on Speech Dispatcher Socket. Mär 03 08:57:07 USER systemd[4423]: Starting Create User Files and Directories... Mär 03 08:57:07 USER systemd[4423]: Listening on D-Bus User Message Bus Socket. Mär 03 08:57:07 USER systemd[4423]: Reached target Sockets. Mär 03 08:57:07 USER systemd[4423]: Finished Create User Files and Directories. Mär 03 08:57:07 USER systemd[4423]: Reached target Basic System. Mär 03 08:57:07 USER systemd[4423]: Cleanup lingering KCrash metadata was skipped because of an unmet condition check (ConditionPathExistsGlob=/var/lib/sddm/.cache/kcrash-metadata/*.ini). Mär 03 08:57:07 USER systemd[4423]: Geoclue agent was skipped because of an unmet condition check (ConditionUser=!@system). Mär 03 08:57:07 USER systemd[4423]: Run user-specific NixOS activation was skipped because of an unmet condition check (ConditionUser=!@system). Mär 03 08:57:07 USER systemd[4423]: Reached target Main User Target. Mär 03 08:57:07 USER systemd[4423]: Startup finished in 256ms. Mär 03 08:57:07 USER systemd[1]: Started User Manager for UID 175. Mär 03 08:57:07 USER systemd[1]: Started Session c1 of User sddm. Mär 03 08:57:07 USER sddm-helper[4446]: Failed to take control of "/dev/tty1" ("USER"): Operation not permitted Mär 03 08:57:07 USER sddm[1517]: Greeter session started successfully Mär 03 08:57:07 USER sddm-helper[4390]: [PAM] Closing session Mär 03 08:57:07 USER sddm-helper[4390]: [PAM] Ended. Mär 03 08:57:07 USER sddm[1517]: Auth: sddm-helper exited with 5 Mär 03 08:57:07 USER sddm[1517]: Greeter stopped. SDDM::Auth::HELPER_TTY_ERROR Mär 03 08:57:07 USER sddm[1517]: Jumping to VT 1 Mär 03 08:57:07 USER sddm[1517]: VT mode didn't need to be fixed Mär 03 08:57:07 USER sddm[1517]: Socket server stopping... Mär 03 08:57:07 USER sddm[1517]: Socket server stopped. Mär 03 08:57:07 USER sddm[1517]: Removing display SDDM::Display(0x559d78c94bd0) ... Mär 03 08:57:07 USER sddm[1517]: Jumping to VT 1 Mär 03 08:57:07 USER sddm[1517]: VT mode didn't need to be fixed Mär 03 08:57:07 USER systemd-logind[1299]: Session c1 logged out. Waiting for processes to exit. Mär 03 08:57:07 USER systemd[1]: session-c1.scope: Deactivated successfully. Mär 03 08:57:07 USER systemd-logind[1299]: Removed session c1. Mär 03 08:57:07 USER org_kde_powerdevil[2147]: [ 2413] Udev event detected Mär 03 08:57:07 USER systemd[4423]: Reached target Sound Card. Mär 03 08:57:07 USER systemd[4423]: Reached target Smart Card. Mär 03 08:57:17 USER systemd[1]: Stopping User Manager for UID 175... Mär 03 08:57:17 USER systemd[4423]: Activating special unit Exit the Session... Mär 03 08:57:17 USER systemd[4423]: Stopped target Main User Target. Mär 03 08:57:17 USER systemd[4423]: Stopped target Basic System. Mär 03 08:57:17 USER systemd[4423]: Stopped target Paths. Mär 03 08:57:17 USER systemd[4423]: Stopped Submitting pending crash events (file monitor). Mär 03 08:57:17 USER systemd[4423]: Stopped target Smart Card. Mär 03 08:57:17 USER systemd[4423]: Stopped target Sockets. Mär 03 08:57:17 USER systemd[4423]: Stopped target Sound Card. Mär 03 08:57:17 USER systemd[4423]: Stopped target Timers. Mär 03 08:57:17 USER systemd[4423]: Stopped Daily Cleanup of User's Temporary Directories. Mär 03 08:57:17 USER systemd[4423]: Closed D-Bus User Message Bus Socket. Mär 03 08:57:17 USER systemd[4423]: Closed GnuPG cryptographic agent (ssh-agent emulation). Mär 03 08:57:17 USER systemd[4423]: Closed GnuPG cryptographic agent and passphrase cache. Mär 03 08:57:17 USER systemd[4423]: Closed PipeWire PulseAudio. Mär 03 08:57:17 USER systemd[4423]: Closed PipeWire Multimedia System Sockets. Mär 03 08:57:17 USER systemd[4423]: Closed Speech Dispatcher Socket. Mär 03 08:57:17 USER systemd[4423]: Stopped Create User Files and Directories. Mär 03 08:57:17 USER systemd[4423]: Removed slice User Application Slice. Mär 03 08:57:17 USER systemd[4423]: Reached target Shutdown. Mär 03 08:57:17 USER systemd[4423]: Finished Exit the Session. Mär 03 08:57:17 USER systemd[4423]: Reached target Exit the Session. Mär 03 08:57:17 USER (sd-pam)[4427]: pam_unix(systemd-user:session): session closed for user sddm Mär 03 08:57:17 USER systemd-logind[1299]: Removed session 3. Mär 03 08:57:17 USER systemd[1]: [email protected]: Deactivated successfully. Mär 03 08:57:17 USER systemd[1]: Stopped User Manager for UID 175. Mär 03 08:57:17 USER systemd[1]: Stopping User Runtime Directory /run/user/175... Mär 03 08:57:17 USER systemd[1]: run-user-175.mount: Deactivated successfully. Mär 03 08:57:17 USER systemd[1]: [email protected]: Deactivated successfully. Mär 03 08:57:17 USER systemd[1]: Stopped User Runtime Directory /run/user/175. -- Boot 27ce3dd1b4584dc1a9458c661c925c6d -- Mär 03 08:58:24 USER kernel: Linux version 6.18.13 (nixbld@localhost) (gcc (GCC) 15.2.0, GNU ld (GNU Binutils) 2.44) #1-NixOS SMP PREEMPT_DYNAMIC Thu Feb 19 15:31:37 UTC 2026 That same bug happened on Mär 03 08:52:38 already, so you can see it twice. I did find the crash report "application", but this crash hasn't been reported there which is why I can't paste it here. Thanks again for looking into this and I'm excited to learn about why that happens. -- You are receiving this mail because: You are watching all bug changes.
