I've just installed Neon 20.04 and tried to start up plasma with wayland. After a few seconds of a black screen I go back to the login screen. I've pasted a wayland session log but can't quite make heads or tails out of it. When logged in with Xorg, I can start a wayland session and start apps within that session so I think I've got everything installed that's needed. Can anyone help?

Thanks,

-Greg


dbus-daemon[3720]: [session uid=1001 pid=3720] Activating service name='org.freedesktop.systemd1' requested by ':1.0' (uid=1001 pid=3726 comm="/usr/bin/dbus-update-activation-environment --syst" label="unconfined")
dbus-daemon[3720]: [session uid=1001 pid=3720] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-update-activation-environment: warning: error sending to systemd: org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1
No backend specified through command line argument, trying auto resolution
Filter multi-plane format 961959257
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Filter multi-plane format 961893977
Filter multi-plane format 825316953
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_XSERVTransSocketUNIXCreateListener: ...SocketCreateListener() failed
_XSERVTransMakeAllCOTSServerListeners: server already running
dbus-daemon[3720]: [session uid=1001 pid=3720] Activating service name='org.freedesktop.systemd1' requested by ':1.2' (uid=1001 pid=3855 comm="/usr/bin/dbus-update-activation-environment --syst" label="unconfined")
dbus-daemon[3720]: [session uid=1001 pid=3720] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-update-activation-environment: warning: error sending to systemd: org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1
dbus-daemon[3720]: [session uid=1001 pid=3720] Activating service name='org.kde.KSplash' requested by ':1.3' (uid=1001 pid=3850 comm="/usr/lib/x86_64-linux-gnu/libexec/startplasma-wayl" label="unconfined")
kdeinit5: preparing to launch '/usr/lib/x86_64-linux-gnu/libexec/kf5/klauncher'
kdeinit5: Launched KLauncher, pid = 3869, result = 0
org.kde.knotifications: env says KDE is running but SNI unavailable -- check KDE_FULL_SESSION and XDG_CURRENT_DESKTOP
The XKEYBOARD keymap compiler (xkbcomp) reports:
> Warning: Unsupported maximum keycode 569, clipping.
> X11 cannot support keycodes above 255.
> Internal error: Could not resolve keysym Invalid
Errors from xkbcomp are not fatal to the X server
dbus-daemon[3720]: [session uid=1001 pid=3720] Successfully activated service 'org.kde.KSplash'
kdeinit5: opened connection to :1
kdeinit5: Got SETENV 'GTK_RC_FILES=/etc/gtk/gtkrc:/home/testuser/.gtkrc:/home/testuser/.config/gtkrc' from launcher.
dbus-daemon[3720]: [session uid=1001 pid=3720] Activating service name='org.freedesktop.systemd1' requested by ':1.9' (uid=1001 pid=3910 comm="/usr/bin/kcminit_startup " label="unconfined")
kdeinit5: Got SETENV 'GTK2_RC_FILES=/etc/gtk-2.0/gtkrc:/home/testuser/.gtkrc-2.0:/home/testuser/.config/gtkrc-2.0' from launcher.
dbus-daemon[3720]: [session uid=1001 pid=3720] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
org.kde.plasma.session: process job "kcminit_startup" finished with exit code 0
dbus-daemon[3720]: [session uid=1001 pid=3720] Activating service name='ca.desrt.dconf' requested by ':1.11' (uid=1001 pid=3959 comm="/usr/bin/kded5 " label="unconfined")
dbus-daemon[3720]: [session uid=1001 pid=3720] Successfully activated service 'ca.desrt.dconf'
xsettingsd: Loaded 0 settings from /home/testuser/.config/xsettingsd/xsettingsd.conf
xsettingsd: Created window 0xa00001 on screen 0 with timestamp 104833
xsettingsd: Selection _XSETTINGS_S0 is owned by 0x0
xsettingsd: Took ownership of selection _XSETTINGS_S0
kdeinit5: Got SETENV 'SESSION_MANAGER=local/Zeus:@/tmp/.ICE-unix/3968,unix/Zeus:/tmp/.ICE-unix/3968' from launcher.
kf5.kconfig.core: "\"fsrestore1\" - conversion of \"0,0,0,0\" to QRect failed"
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/baloo_file.desktop" ("/usr/bin/baloo_file")
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/org.kde.plasmashell.desktop" ("/usr/bin/plasmashell")
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/polkit-kde-authentication-agent-1.desktop" ("/usr/lib/x86_64-linux-gnu/libexec/polkit-kde-authentication-agent-1")
xsettingsd: Reloading configuration
xsettingsd: Loaded 10 settings from /home/testuser/.config/xsettingsd/xsettingsd.conf
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/kaccess.desktop" ("/usr/bin/kaccess")
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/xembedsniproxy.desktop" ("/usr/bin/xembedsniproxy")
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/pam_kwallet_init.desktop" ("/usr/share/libpam-kwallet-common/pam_kwallet_init")
xsettingsd: Reloading configuration
xsettingsd: Loaded 10 settings from /home/testuser/.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 10 settings from /home/testuser/.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 10 settings from /home/testuser/.config/xsettingsd/xsettingsd.conf
dbus-daemon[3720]: [session uid=1001 pid=3720] Activating service name='org.kde.ActivityManager' requested by ':1.19' (uid=1001 pid=3988 comm="/usr/bin/plasmashell " label="unconfined")
dbus-daemon[3720]: [session uid=1001 pid=3720] Successfully activated service 'org.kde.ActivityManager'
xsettingsd: Reloading configuration
xsettingsd: Loaded 10 settings from /home/testuser/.config/xsettingsd/xsettingsd.conf
xsettingsd: Reloading configuration
xsettingsd: Loaded 10 settings from /home/testuser/.config/xsettingsd/xsettingsd.conf
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/pulseaudio.desktop" ("/usr/bin/start-pulseaudio-x11")
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/xdg-user-dirs.desktop" ("/usr/bin/xdg-user-dirs-update")
xsettingsd: Reloading configuration
xsettingsd: Loaded 10 settings from /home/testuser/.config/xsettingsd/xsettingsd.conf
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/org.kde.kdeconnect.daemon.desktop" ("/usr/lib/x86_64-linux-gnu/libexec/kdeconnectd")
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/gmenudbusmenuproxy.desktop" ("/usr/bin/gmenudbusmenuproxy")
org.kde.plasma.session: Starting autostart service "/etc/xdg/autostart/org.kde.discover.notifier.desktop" ("/usr/lib/x86_64-linux-gnu/libexec/DiscoverNotifier")
xsettingsd: Reloading configuration
xsettingsd: Loaded 10 settings from /home/testuser/.config/xsettingsd/xsettingsd.conf
dbus-daemon[3720]: [session uid=1001 pid=3720] Activating service name='org.freedesktop.Notifications' requested by ':1.24' (uid=1001 pid=4033 comm="/usr/lib/x86_64-linux-gnu/libexec/kdeconnectd " label="unconfined")
The Wayland connection broke. Did the Wayland compositor die?
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = kdeconnectd path = /usr/lib/x86_64-linux-gnu/libexec pid = 4033
KCrash: Arguments: /usr/lib/x86_64-linux-gnu/libexec/kdeconnectd
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = kactivitymanagerd path = /usr/lib/x86_64-linux-gnu/libexec pid = 4019
KCrash: Arguments: /usr/lib/x86_64-linux-gnu/libexec/kactivitymanagerd
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi
klauncher: Exiting on signal 6
kdeinit5: KLauncher died unexpectedly.
(EE) failed to read Wayland events: Broken pipe
kdeinit5: preparing to launch '/usr/lib/x86_64-linux-gnu/libexec/kf5/klauncher'
kdeinit5: Launched KLauncher, pid = 4167, result = 0
kdeinit5: PID 3869 terminated.
X connection to :1 broken (explicit kill or server shutdown).
QProcess: Destroyed while process ("/usr/bin/plasma_session") is still running.
QSocketNotifier: Invalid socket 6 and type 'Read', disabling...
kdeinit5: preparing to launch '/usr/lib/x86_64-linux-gnu/libexec/kf5/klauncher'
kdeinit5: Launched KLauncher, pid = 4174, result = 0
"/usr/bin/kwin_wayland" ("--xwayland", "--libinput", "--exit-with-session=/usr/lib/x86_64-linux-gnu/libexec/startplasma-waylandsession") exited with code 11
startplasmacompositor: Shutting down...
startplasmacompositor: Done.
kdeinit5: Communication error with launcher. Exiting!
Got SIGINT, exiting.
KCrash: Attempting to start /usr/bin/kded5
KCrash: crashing... crashRecursionCounter = 2
KCrash: Application Name = kded5 path = /usr/bin pid = 3959
KCrash: Arguments: /usr/bin/kded5
KCrash: Attempting to start /usr/lib/x86_64-linux-gnu/libexec/drkonqi

I think I've narrow it down to the problem having to do with the following lines from the previously posted log:

dbus-daemon[3720]: [session uid=1001 pid=3720] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-update-activation-environment: warning: error sending to systemd: org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1

Still trying to figure out if this is a wrong configuration or if I'm missing dependencies.

-Greg

kde-grego wrote:I think I've narrow it down to the problem having to do with the following lines from the previously posted log:

dbus-daemon[3720]: [session uid=1001 pid=3720] Activated service 'org.freedesktop.systemd1' failed: Process org.freedesktop.systemd1 exited with status 1
dbus-update-activation-environment: warning: error sending to systemd: org.freedesktop.DBus.Error.Spawn.ChildExited: Process org.freedesktop.systemd1 exited with status 1
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Still trying to figure out if this is a wrong configuration or if I'm missing dependencies.

-Greg

*bump*
I hope bumping this thread will help you.

I'm affected as well, it's from the 5.19.4 updates. Bhushan Shah on Matrix said this is the relevant bug report which has been updated to mention Arch apparently got it fixed.

This year was supposed to get Wayland up to speed, so I'd really hope such breaking bugs don't actually make it live... But then again, this is 2020. ¯\_(ツ)_/¯

A few system updates later and the problem seems to be resolve. I'm not sure which update fixed the issue but I can now log into a Wayland session.

-Greg