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I'm trying to get the fingerprint scanner on my thinkpad x1 yoga 4th gen to work with SDDM. Ive followed the arch wiki but editing the /etc/pam.d/sddm file according to it messes up both password and fingerprint login leaving me to go to tty2 and comment the changes in the config so I can login. It doesn't matter if I try using my fingerprint first or the password. After a few tries I get a "login failed!" message in my sddm theme.
Result of fprintd-verify:
Using device /net/reactivated/Fprint/Device/0
Listing enrolled fingers:
- #0: right-index-finger
Verify started!
Verifying: right-index-finger
Verify result: verify-match (done)My /etc/pam.d/sddm config (the first 2 auth lines are copied from the wiki I have to comment this to be able to login)
#%PAM-1.0
auth [succes=1 new_authtok_reqd=1 default=ignore] pam_unix.so try_first_pass likeauth nullok
auth sufficient pam_fprintd.so
auth include system-login
-auth optional pam_gnome_keyring.so
-auth optional pam_kwallet5.so
account include system-login
password include system-login
-password optional pam_gnome_keyring.so use_authtok
session optional pam_keyinit.so force revoke
session include system-login
-session optional pam_gnome_keyring.so auto_start
-session optional pam_kwallet5.so auto_startThe logs from journalctl for sddm from a boot where i try using fingerprint, then after a few tries I also try password.
febr 12 23:51:24 thinkpad systemd[1]: Started Simple Desktop Display Manager.
febr 12 23:51:24 thinkpad sddm[765]: Initializing...
febr 12 23:51:24 thinkpad sddm[765]: Starting...
febr 12 23:51:24 thinkpad sddm[765]: Logind interface found
febr 12 23:51:24 thinkpad sddm[765]: Adding new display...
febr 12 23:51:24 thinkpad sddm[765]: Loaded empty theme configuration
febr 12 23:51:24 thinkpad sddm[765]: Using VT 1
febr 12 23:51:24 thinkpad sddm[765]: Display server started.
febr 12 23:51:24 thinkpad sddm[765]: Socket server starting...
febr 12 23:51:24 thinkpad sddm[765]: Socket server started.
febr 12 23:51:24 thinkpad sddm[765]: Loading theme configuration from "/usr/share/sddm/themes/Eucalyptus-drop/theme.conf"
febr 12 23:51:24 thinkpad sddm[765]: Greeter starting...
febr 12 23:51:24 thinkpad sddm-helper[775]: [PAM] Starting...
febr 12 23:51:24 thinkpad sddm-helper[775]: [PAM] Authenticating...
febr 12 23:51:24 thinkpad sddm-helper[775]: [PAM] returning.
febr 12 23:51:24 thinkpad sddm-helper[775]: pam_unix(sddm-greeter:session): session opened for user sddm(uid=965) by (uid=0)
febr 12 23:51:24 thinkpad sddm[765]: Greeter session started successfully
febr 12 23:51:24 thinkpad sddm-helper[775]: [PAM] Closing session
febr 12 23:51:24 thinkpad sddm-helper[775]: pam_unix(sddm-greeter:session): session closed for user sddm
febr 12 23:51:24 thinkpad sddm-helper[775]: [PAM] Ended.
febr 12 23:51:24 thinkpad sddm[765]: Auth: sddm-helper exited with 4
febr 12 23:51:24 thinkpad sddm[765]: Greeter stopped. SDDM::Auth::HELPER_DISPLAYSERVER_ERROR
febr 12 23:51:24 thinkpad sddm[765]: Removing display SDDM::Display(0x59ef39993e90) ...
febr 12 23:51:24 thinkpad sddm[765]: Socket server stopping...
febr 12 23:51:24 thinkpad sddm[765]: Socket server stopped.
febr 12 23:51:24 thinkpad sddm[765]: Failed to launch the display server, falling back to DisplayServer=x11-user
febr 12 23:51:24 thinkpad sddm[765]: Adding new display...
febr 12 23:51:24 thinkpad sddm[765]: Loaded empty theme configuration
febr 12 23:51:24 thinkpad sddm[765]: Using VT 1
febr 12 23:51:24 thinkpad sddm[765]: Display server started.
febr 12 23:51:24 thinkpad sddm[765]: Socket server starting...
febr 12 23:51:24 thinkpad sddm[765]: Socket server started.
febr 12 23:51:24 thinkpad sddm[765]: Loading theme configuration from "/usr/share/sddm/themes/Eucalyptus-drop/theme.conf"
febr 12 23:51:24 thinkpad sddm[765]: Greeter starting...
febr 12 23:51:24 thinkpad sddm-helper[800]: [PAM] Starting...
febr 12 23:51:24 thinkpad sddm-helper[800]: [PAM] Authenticating...
febr 12 23:51:24 thinkpad sddm-helper[800]: [PAM] returning.
febr 12 23:51:24 thinkpad sddm-helper[800]: pam_unix(sddm-greeter:session): session opened for user sddm(uid=965) by (uid=0)
febr 12 23:51:24 thinkpad sddm-helper[800]: Starting X11 session: "/usr/bin/X -nolisten tcp -background none -seat seat0 -noreset -keeptty -novtswitch -verbose 3" "/usr/bin/sddm-greeter-qt6 --socket /tmp/sddm--jmAVMz --theme /usr/share/sddm/themes/Eucalyptus-drop"
febr 12 23:51:24 thinkpad sddm[765]: Greeter session started successfully
febr 12 23:51:25 thinkpad sddm[765]: Message received from greeter: Connect
febr 12 23:51:28 thinkpad sddm[765]: Message received from greeter: Login
febr 12 23:51:28 thinkpad sddm[765]: Reading from "/usr/share/wayland-sessions/hyprland.desktop"
febr 12 23:51:28 thinkpad sddm[765]: Session "/usr/share/wayland-sessions/hyprland.desktop" selected, command: "Hyprland" for VT 2
febr 12 23:51:28 thinkpad sddm-helper[840]: PAM pam_parse: expecting return value; [...succes=1 new_authtok_reqd=1 default=ignore]
febr 12 23:51:28 thinkpad sddm-helper[840]: [PAM] Starting...
febr 12 23:51:28 thinkpad sddm-helper[840]: [PAM] Authenticating...
febr 12 23:51:28 thinkpad sddm-helper[840]: [PAM] Preparing to converse...
febr 12 23:51:28 thinkpad sddm-helper[840]: [PAM] Conversation with 1 messages
febr 12 23:51:28 thinkpad sddm-helper[840]: pam_unix(sddm:auth): authentication failure; logname= uid=0 euid=0 tty= ruser= rhost= user=gramms
febr 12 23:51:28 thinkpad sddm-helper[840]: [PAM] Preparing to converse...
febr 12 23:51:28 thinkpad sddm-helper[840]: [PAM] Conversation with 1 messages
febr 12 23:51:28 thinkpad sddm[765]: Authentication information: SDDM::Auth::INFO_UNKNOWN "Place your right index finger on the fingerprint reader"
febr 12 23:51:32 thinkpad sddm-helper[840]: [PAM] authenticate: Authentication failure
febr 12 23:51:32 thinkpad sddm-helper[840]: [PAM] returning.
febr 12 23:51:32 thinkpad sddm[765]: Authentication error: SDDM::Auth::ERROR_AUTHENTICATION "Authentication failure"
febr 12 23:51:32 thinkpad sddm[765]: Authentication for user "" failed
febr 12 23:51:32 thinkpad sddm-helper[840]: PAM 1 more authentication failure; logname= uid=0 euid=0 tty= ruser= rhost= user=gramms
febr 12 23:51:32 thinkpad sddm-helper[840]: [PAM] Asked to close the session but it wasn't previously open
febr 12 23:51:32 thinkpad sddm-helper[840]: [PAM] Ended.
febr 12 23:51:32 thinkpad sddm[765]: Auth: sddm-helper exited with 1
febr 12 23:51:35 thinkpad sddm[765]: Message received from greeter: Login
febr 12 23:51:35 thinkpad sddm[765]: Reading from "/usr/share/wayland-sessions/hyprland.desktop"
febr 12 23:51:35 thinkpad sddm[765]: Session "/usr/share/wayland-sessions/hyprland.desktop" selected, command: "Hyprland" for VT 2
febr 12 23:51:35 thinkpad sddm-helper[862]: PAM pam_parse: expecting return value; [...succes=1 new_authtok_reqd=1 default=ignore]
febr 12 23:51:35 thinkpad sddm-helper[862]: [PAM] Starting...
febr 12 23:51:35 thinkpad sddm-helper[862]: [PAM] Authenticating...
febr 12 23:51:35 thinkpad sddm-helper[862]: [PAM] Preparing to converse...
febr 12 23:51:35 thinkpad sddm-helper[862]: [PAM] Conversation with 1 messages
febr 12 23:51:35 thinkpad sddm-helper[862]: pam_unix(sddm:auth): authentication failure; logname= uid=0 euid=0 tty= ruser= rhost= user=gramms
febr 12 23:51:36 thinkpad sddm-helper[862]: [PAM] Preparing to converse...
febr 12 23:51:36 thinkpad sddm-helper[862]: [PAM] Conversation with 1 messages
febr 12 23:51:36 thinkpad sddm[765]: Authentication information: SDDM::Auth::INFO_UNKNOWN "Place your right index finger on the fingerprint reader"
febr 12 23:51:38 thinkpad sddm-helper[862]: [PAM] authenticate: Authentication failure
febr 12 23:51:38 thinkpad sddm-helper[862]: [PAM] returning.
febr 12 23:51:38 thinkpad sddm-helper[862]: PAM 1 more authentication failure; logname= uid=0 euid=0 tty= ruser= rhost= user=gramms
febr 12 23:51:38 thinkpad sddm[765]: Authentication error: SDDM::Auth::ERROR_AUTHENTICATION "Authentication failure"
febr 12 23:51:38 thinkpad sddm-helper[862]: [PAM] Asked to close the session but it wasn't previously open
febr 12 23:51:38 thinkpad sddm[765]: Authentication for user "" failed
febr 12 23:51:38 thinkpad sddm-helper[862]: [PAM] Ended.
febr 12 23:51:38 thinkpad sddm[765]: Auth: sddm-helper exited with 1Any and all help would be much appreciated, cheers!
Last edited by 66Gramms (2025-02-13 14:58:00)
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I've managed to find a solution by linking my post to ChatGPT. The problem was mispelling in the configuration of /etc/pam.d/sddm file where instead of success I've accidently typed succes
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