You have been subscribed to a public bug by Scarlett Gately Moore
(scarlettmoore):
When unlocking, I enter the password and press enter. There is a 10-30
second delay before I get the desktop. During this time I can still
click around on the login screen, and the UI is responsive.
I can trace this issue back to trying to enable fingerprint login. I
have since given up on fingerprint login, and tried to disable it, but I
still have this problem.
In the journalctl -u sddm logs, I can see that a process is crashing. I
think that is the bug.
Please let me know if there is anything I can do for you to help
troubleshoot / replicate the issue.
Key lines in log:
```
Jan 02 17:34:16 thinkx12-linux sddm[2478]: Adding new display...
Jan 02 17:34:16 thinkx12-linux sddm[2478]: Loaded empty theme configuration
Jan 02 17:34:16 thinkx12-linux sddm[2478]: Xauthority path:
"/run/sddm/xauth_hLYFkm"
Jan 02 17:34:16 thinkx12-linux sddm[2478]: Using VT 3
Jan 02 17:34:16 thinkx12-linux sddm[2478]: Display server starting...
Jan 02 17:34:16 thinkx12-linux sddm[2478]: Writing cookie to
"/run/sddm/xauth_hLYFkm"
Jan 02 17:34:16 thinkx12-linux sddm[2478]: Running: /usr/bin/X -nolisten tcp
-background none -seat seat0 vt3 -auth /run/sddm/xauth_hLYFkm -noreset
-displayfd 20
Jan 02 17:34:17 thinkx12-linux sddm[2478]: Writing cookie to
"/run/sddm/xauth_hLYFkm"
Jan 02 17:34:17 thinkx12-linux sddm[2478]: Setting default cursor
Jan 02 17:34:17 thinkx12-linux sddm[2478]: Running display setup script
"/usr/share/sddm/scripts/Xsetup"
Jan 02 17:34:17 thinkx12-linux sddm[2478]: Display server started.
Jan 02 17:34:17 thinkx12-linux sddm[2478]: Socket server starting...
Jan 02 17:34:17 thinkx12-linux sddm[2478]: Socket server started.
Jan 02 17:34:17 thinkx12-linux sddm[2478]: Loading theme configuration from
"/usr/share/sddm/themes/kubuntu/theme.conf"
Jan 02 17:34:17 thinkx12-linux sddm[2478]: Greeter starting...
Jan 02 17:34:17 thinkx12-linux sddm-helper[1185431]: [PAM] Starting...
Jan 02 17:34:17 thinkx12-linux sddm-helper[1185431]: [PAM] Authenticating...
Jan 02 17:34:17 thinkx12-linux sddm-helper[1185431]: [PAM] returning.
Jan 02 17:34:17 thinkx12-linux sddm-helper[1185431]:
pam_unix(sddm-greeter:session): session opened for user sddm(uid=111) by
sddm(uid=0)
Jan 02 17:34:17 thinkx12-linux sddm-helper[1185431]: Writing cookie to
"/tmp/xauth_ejffYu"
Jan 02 17:34:17 thinkx12-linux sddm-helper[1185431]: Starting X11 session: ""
"/usr/bin/sddm-greeter-qt6 --socket /tmp/sddm-:2-XlxVbX --theme
/usr/share/sddm/themes/k>
Jan 02 17:34:18 thinkx12-linux sddm[2478]: Greeter session started successfully
Jan 02 17:34:18 thinkx12-linux sddm[2478]: Message received from greeter:
Connect
Jan 02 17:34:22 thinkx12-linux sddm[2478]: Message received from greeter: Login
Jan 02 17:34:22 thinkx12-linux sddm[2478]: Reading from
"/usr/share/wayland-sessions/plasma.desktop"
Jan 02 17:34:22 thinkx12-linux sddm[2478]: Session
"/usr/share/wayland-sessions/plasma.desktop" selected, command:
"/usr/lib/x86_64-linux-gnu/libexec/plasma-dbus-run->
Jan 02 17:34:22 thinkx12-linux sddm-helper[1185642]: [PAM] Starting...
Jan 02 17:34:22 thinkx12-linux sddm-helper[1185642]: [PAM] Authenticating...
Jan 02 17:34:22 thinkx12-linux sddm-helper[1185642]: [PAM] Preparing to
converse...
Jan 02 17:34:22 thinkx12-linux sddm-helper[1185642]: [PAM] Conversation with 1
messages
Jan 02 17:34:22 thinkx12-linux sddm-helper[1185642]: [PAM] returning.
Jan 02 17:34:22 thinkx12-linux sddm[2478]: Authentication for user "semitones"
successful
Jan 02 17:34:22 thinkx12-linux sddm-helper[1185642]: [PAM] Asked to close the
session but it wasn't previously open
Jan 02 17:34:22 thinkx12-linux sddm-helper[1185642]: [PAM] Ended.
Jan 02 17:34:22 thinkx12-linux sddm[2478]: Auth: sddm-helper exited successfully
Jan 02 17:34:22 thinkx12-linux sddm[2478]: Greeter stopping...
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Socket server stopping...
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Socket server stopped.
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Display server stopping...
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Display server stopped.
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Running display stop script
QList("/usr/share/sddm/scripts/Xstop")
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Removing display
SDDM::Display(0x64327a11caa0) ...
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Greeter stopping...
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Error from greeter session: "Process
crashed"
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Auth: sddm-helper (--socket
/tmp/sddm-auth-7de7cfa5-9dc0-420c-b5e0-a05159dad6bd --id 4 --start
/usr/bin/sddm-greeter-qt6 -->
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Error from greeter session: "Process
crashed"
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Auth: sddm-helper exited with 9
Jan 02 17:34:27 thinkx12-linux sddm[2478]: Greeter stopped.
SDDM::Auth::HelperExitStatus(9)
```
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: sddm 0.21.0+git20250502.4fe234b-2ubuntu1
ProcVersionSignature: Ubuntu 6.17.0-8.8-generic 6.17.2
Uname: Linux 6.17.0-8-generic x86_64
ApportVersion: 2.33.1-0ubuntu3
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Sat Jan 3 18:00:20 2026
InstallationDate: Installed on 2025-07-12 (175 days ago)
InstallationMedia: Kubuntu 25.04 "Plucky Puffin" - Release amd64 (20250417)
SourcePackage: sddm
UpgradeStatus: Upgraded to questing on 2025-10-31 (65 days ago)
mtime.conffile..etc.pam.d.sddm: 2026-01-03T14:09:58.814497
** Affects: sddm (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug questing wayland-session
--
SDDM takes a long time to login -- crashes?
https://bugs.launchpad.net/bugs/2137403
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