Bugzilla – Bug 1215962
sddm fails when starting as a wayland client
Last modified: 2024-03-17 21:17:48 UTC
Created attachment 869927 [details] Output of Journal, for failure condition Setting an override in /etc/sddm.conf.d/10-wayland.conf for: [General] DisplayManager=wayland I would expect to get sddm running as a wayland client, but it crashes with an SDDM::Auth::Helper_AUTH_ERROR Please see attached log from the journal.
> Jumping to VT 1 That's a bit weird, VT 1 is usually a getty. If this was the issue then kwin would fail even earlier though. Does it work if you rcxdm restart?
Created attachment 869942 [details] Full journaloutput for `rcxdm restart`
running `rcxdm restart` results in a black screen, with a cursor in the upper left corner blinking. I've attached the full journal output for that particular boot.
Shawn tagged me into this and I did some digging. I suspect that this might be fallout from the utmp removal in Tumbleweed. The only places where this error occur in the codebase are around its utmp code: https://github.com/sddm/sddm/blob/501129294be1487f753482c29949fc1c19ef340e/src/helper/HelperApp.cpp#L140-L165 I don't think we should be doing utmp logins/logouts when we're perfectly capable of using login1 when it's available...
(In reply to Neal Gompa from comment #4) > Shawn tagged me into this and I did some digging. I suspect that this might > be fallout from the utmp removal in Tumbleweed. > > The only places where this error occur in the codebase are around its utmp > code: > https://github.com/sddm/sddm/blob/501129294be1487f753482c29949fc1c19ef340e/ > src/helper/HelperApp.cpp#L140-L165 > > I don't think we should be doing utmp logins/logouts when we're perfectly > capable of using login1 when it's available... On Tumbleweed yes, but pretty much everywhere else [buw]tmp still exists and gets read (wall etc.). It also won't cause the helper to fail, it's only used to log failed and successful login attempts. Errors are logged but ignored.
Can reproduce bug. Some info from SDDM github: https://github.com/sddm/sddm/issues/1844
Maybe this observation is related to this bug: When you configure autologin on a current tumbleweed and select "wayland" for the user session in sddm, sddm will crash upon restart of the machine. I have this reproducible on three tumbleweed machines. The only way to go into a user session with wayland is with disabled autologin and a manual login from the user login screen.
(In reply to Thomas Rother from comment #7) > Maybe this observation is related to this bug: > > When you configure autologin on a current tumbleweed and select "wayland" > for the user session in sddm, sddm will crash upon restart of the machine. I > have this reproducible on three tumbleweed machines. > > The only way to go into a user session with wayland is with disabled > autologin and a manual login from the user login screen. No auto login here, never touch the stuff
?? If you mean "security": the described machines are encrypted laptops. The equivalent for the "user login" is the LUKS password. In this usecase the kde autologin should be supported in kde6/qt6/wayland as it was before with kde5/qt5/xll. If not, this would be a regression, at least from the user perspective.
I guess bug 1221507 is the same as this
With the latest sddm-qt6 version 0.21.0, it appears to just be ignoring the configuration file in /etc/sddm.conf.d, when trying to set a wayland session, and defaulting to an X11 session. Looking at the logs, it doesn't even appear to be trying to start a wayland session for sddm, with DisplayManager=wayland set. Mar 17 14:10:38 mustang sddm[1480]: Initializing... Mar 17 14:10:38 mustang sddm[1480]: Starting... Mar 17 14:10:38 mustang sddm[1480]: Logind interface found Mar 17 14:10:38 mustang sddm[1480]: Adding new display... Mar 17 14:10:38 mustang sddm[1480]: Loaded empty theme configuration Mar 17 14:10:38 mustang sddm[1480]: Xauthority path: "/run/sddm/xauth_TPeelf" Mar 17 14:10:38 mustang sddm[1480]: Using VT 2 Mar 17 14:10:38 mustang sddm[1480]: Display server starting... Mar 17 14:10:38 mustang sddm[1480]: Writing cookie to "/run/sddm/xauth_TPeelf" Mar 17 14:10:38 mustang sddm[1480]: Running: /usr/bin/X -nolisten tcp -background none -seat seat0 vt2 -auth /run/sddm/xauth_TPeelf -noreset -displayfd 16 Mar 17 14:10:39 mustang sddm[1480]: Setting default cursor Mar 17 14:10:39 mustang sddm[1480]: Running display setup script "/usr/etc/X11/xdm/Xsetup" Mar 17 14:10:39 mustang sddm[1480]: Display server started. Mar 17 14:10:39 mustang sddm[1480]: Socket server starting... Mar 17 14:10:39 mustang sddm[1480]: Socket server started. Mar 17 14:10:39 mustang sddm[1480]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf" Mar 17 14:10:39 mustang sddm[1480]: Greeter starting... Mar 17 14:10:39 mustang sddm-helper[1510]: [PAM] Starting... Mar 17 14:10:39 mustang sddm-helper[1510]: [PAM] Authenticating... Mar 17 14:10:39 mustang sddm-helper[1510]: [PAM] returning. Mar 17 14:10:39 mustang systemd-logind[1156]: New session 1 of user sddm. Mar 17 14:10:39 mustang (systemd)[1513]: pam_unix(systemd-user:session): session opened for user sddm(uid=471) by sddm(uid=0) Mar 17 14:10:39 mustang systemd[1]: Started Session 1 of User sddm. Mar 17 14:10:39 mustang sddm-helper[1510]: pam_unix(sddm-greeter:session): session opened for user sddm(uid=471) by sddm(uid=0) Mar 17 14:10:39 mustang sddm-helper[1510]: pam_kwallet5(sddm-greeter:session): pam_kwallet5: pam_sm_open_session Mar 17 14:10:39 mustang sddm-helper[1510]: pam_kwallet5(sddm-greeter:session): pam_kwallet5: open_session called without kwallet5_key Mar 17 14:10:39 mustang sddm-helper[1510]: Writing cookie to "/tmp/xauth_RhbaQU" Mar 17 14:10:39 mustang sddm-helper[1510]: Starting X11 session: "" "/usr/bin/sddm-greeter-qt6 --socket /tmp/sddm-:0-oScEPt --theme /usr/share/sddm/themes/breeze" Mar 17 14:10:39 mustang sddm[1480]: Greeter session started successfully Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: High-DPI autoscaling Enabled Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: Reading from "/usr/local/share/wayland-sessions/plasmawayland.desktop" Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: Reading from "/usr/share/wayland-sessions/plasmawayland.desktop" Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: Reading from "/usr/local/share/wayland-sessions/weston.desktop" Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: Reading from "/usr/share/wayland-sessions/weston.desktop" Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf" Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: Connected to the daemon. Mar 17 14:10:39 mustang sddm[1480]: Message received from greeter: Connect Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: Loading file:///usr/share/sddm/themes/breeze/Main.qml... Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: QObject: Cannot create children for a parent that is in a different thread. Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: QObject: Cannot create children for a parent that is in a different thread. Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: QObject: Cannot create children for a parent that is in a different thread. Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: QObject: Cannot create children for a parent that is in a different thread. Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: QObject: Cannot create children for a parent that is in a different thread. Mar 17 14:10:39 mustang sddm-greeter-qt6[1533]: QObject: Cannot create children for a parent that is in a different thread. Mar 17 14:10:40 mustang dbus-daemon[1148]: [system] Activating via systemd: service name='org.freedesktop.UDisks2' unit='udisks2.service' requested by ':1.19' (uid=471 pid=1533 comm="/usr/bin/sddm-greeter-qt6 --socket /tmp/sddm-:0-oS" label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023") Mar 17 14:10:40 mustang dbus-daemon[1148]: [system] Activating via systemd: service name='org.freedesktop.UPower' unit='upower.service' requested by ':1.19' (uid=471 pid=1533 comm="/usr/bin/sddm-greeter-qt6 --socket /tmp/sddm-:0-oS" label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023") Mar 17 14:10:40 mustang dbus-daemon[1540]: [session uid=471 pid=1540] Activating via systemd: service name='org.freedesktop.portal.Desktop' unit='xdg-desktop-portal.service' requested by ':1.0' (uid=471 pid=1533 comm="/usr/bin/sddm-greeter-qt6 --socket /tmp/sddm-:0-oS" label="unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023") Mar 17 14:10:40 mustang sddm-greeter-qt6[1533]: Adding view for "eDP-1" QRect(0,0 1920x1200) Mar 17 14:10:40 mustang sddm-greeter-qt6[1533]: QDBusConnection: name 'org.freedesktop.UDisks2' had owner '' but we thought it was ':1.20' Mar 17 14:10:40 mustang sddm-greeter-qt6[1533]: QDBusConnection: name 'org.freedesktop.UPower' had owner '' but we thought it was ':1.21' Mar 17 14:10:40 mustang sddm-greeter-qt6[1533]: Message received from daemon: Capabilities Mar 17 14:10:40 mustang sddm-greeter-qt6[1533]: Message received from daemon: HostName Mar 17 14:10:59 mustang sddm-greeter-qt6[1533]: file:///usr/share/sddm/themes/breeze/Main.qml:241:17 Parameter "username" is not declared. Injection of parameters into signal handlers is deprecated. Use JavaScript functions with formal parameters instead. Mar 17 14:10:59 mustang sddm-greeter-qt6[1533]: Reading from "/usr/share/wayland-sessions/plasmawayland.desktop" Mar 17 14:10:59 mustang sddm[1480]: Message received from greeter: Login Mar 17 14:10:59 mustang sddm[1480]: Reading from "/usr/share/wayland-sessions/plasmawayland.desktop" Mar 17 14:10:59 mustang sddm[1480]: Session "/usr/share/wayland-sessions/plasmawayland.desktop" selected, command: "/usr/libexec/plasma-dbus-run-session-if-needed /usr/bin/startplasma-wayland" for VT 3 Mar 17 14:10:59 mustang sddm-helper[1621]: [PAM] Starting... Mar 17 14:10:59 mustang sddm-helper[1621]: [PAM] Authenticating... Mar 17 14:10:59 mustang sddm-helper[1621]: pam_kwallet5(sddm:auth): pam_kwallet5: pam_sm_authenticate Mar 17 14:10:59 mustang sddm-helper[1621]: [PAM] Preparing to converse... Mar 17 14:10:59 mustang sddm-helper[1621]: pam_kwallet5(sddm:auth): pam_kwallet5: Couldn't get password (it is empty) Mar 17 14:10:59 mustang sddm-helper[1621]: [PAM] Conversation with 1 messages Mar 17 14:10:59 mustang sddm-helper[1621]: [PAM] returning. Mar 17 14:10:59 mustang sddm[1480]: Authentication for user "sfalken" successful Mar 17 14:10:59 mustang sddm-helper[1621]: pam_kwallet5(sddm:setcred): pam_kwallet5: pam_sm_setcred Mar 17 14:10:59 mustang sddm-greeter-qt6[1533]: Message received from daemon: LoginSucceeded Mar 17 14:10:59 mustang sddm-helper[1510]: [PAM] Closing session Mar 17 14:10:59 mustang sddm-helper[1510]: pam_unix(sddm-greeter:session): session closed for user sddm Mar 17 14:10:59 mustang sddm-helper[1510]: pam_kwallet5(sddm-greeter:session): pam_kwallet5: pam_sm_close_session Mar 17 14:10:59 mustang sddm-helper[1510]: [PAM] Ended. Mar 17 14:10:59 mustang sddm[1480]: Auth: sddm-helper exited successfully Mar 17 14:10:59 mustang sddm[1480]: Greeter stopped. SDDM::Auth::HELPER_SUCCESS Mar 17 14:10:59 mustang sddm-helper[1621]: pam_unix(sddm:session): session opened for user sfalken(uid=1000) by sfalken(uid=0) Mar 17 14:10:59 mustang sddm-helper[1621]: pam_kwallet5(sddm:session): pam_kwallet5: pam_sm_open_session Mar 17 14:10:59 mustang sddm-helper[1654]: pam_kwallet5: final socket path: /run/user/1000/kwallet5.socket Mar 17 14:10:59 mustang sddm-helper[1621]: pam_wtmpdb(sddm:session): open_database_rw: Cannot create/open database (/var/lib/wtmpdb/wtmp.db): unable to open database file Mar 17 14:10:59 mustang sddm-helper[1621]: Starting Wayland user session: "/usr/share/sddm/scripts/wayland-session" "/usr/libexec/plasma-dbus-run-session-if-needed /usr/bin/startplasma-wayland" Mar 17 14:10:59 mustang sddm-helper[1656]: Jumping to VT 3 Mar 17 14:10:59 mustang sddm-helper[1656]: VT mode didn't need to be fixed Mar 17 14:11:00 mustang sddm[1480]: Session started true Mar 17 14:11:00 mustang sddm-helper[1621]: Failed to write utmpx: No such file or directory