Bug 444749 - Plasma Wayland is unable to launch
Summary: Plasma Wayland is unable to launch
Status: RESOLVED FIXED
Alias: None
Product: plasmashell
Classification: Plasma
Component: general (show other bugs)
Version: 5.23.2
Platform: Arch Linux Linux
: NOR crash
Target Milestone: 1.0
Assignee: David Edmundson
URL:
Keywords: wayland-only
Depends on:
Blocks:
 
Reported: 2021-11-01 04:23 UTC by yamiyukisenpai
Modified: 2022-01-27 15:33 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

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Description yamiyukisenpai 2021-11-01 04:23:46 UTC 
SUMMARY
Plasma is not launching on Wayland.  Coredump shows an output from `/usr/bin/kded5` only.

STEPS TO REPRODUCE
1. Select Plasma Wayland
2. Log in from SDDM
3. 

OBSERVED RESULT
Just throws me back to SDDM

EXPECTED RESULT
Log into Plasma desktop

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 5.23.2
KDE Frameworks Version: 5.87
Qt Version: 

ADDITIONAL INFORMATION
Here's the output from the coredump:
Thread 1 (Thread 0x7f837e7d1cc0 (LWP 2760)):
#0  0x00007f83816aed22 in raise () from /usr/lib/libc.so.6
#1  0x00007f8381698862 in abort () from /usr/lib/libc.so.6
#2  0x00007f8381ae4910 in QMessageLogger::fatal(char const*, ...) const () from /usr/lib/libQt5Core.so.5
#3  0x00007f838228a155 in QGuiApplicationPrivate::createPlatformIntegration() () from /usr/lib/libQt5Gui.so.5
#4  0x00007f838228a661 in QGuiApplicationPrivate::createEventDispatcher() () from /usr/lib/libQt5Gui.so.5
#5  0x00007f8381d14117 in QCoreApplicationPrivate::init() () from /usr/lib/libQt5Core.so.5
#6  0x00007f838228d673 in QGuiApplicationPrivate::init() () from /usr/lib/libQt5Gui.so.5
#7  0x00007f8382a613ca in QApplicationPrivate::init() () from /usr/lib/libQt5Widgets.so.5
#8  0x000055849183e169 in ?? ()
#9  0x00007f8381699b25 in __libc_start_main () from /usr/lib/libc.so.6
#10 0x000055849183eabe in ?? ()

X11 launches fine, but I can't seem to get any coredump from the Wayland session
Comment 1 yamiyukisenpai 2021-11-01 04:34:07 UTC 
I'm currently using X11, and it works so far.

SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 5.23.2
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
Kernel Version: 5.14.14-zen1-1-zen (64-bit)
Graphics Platform: X11
Processors: 4 × Intel® Core™ i7-4510U CPU @ 2.00GHz
Memory: 15.5 GiB of RAM
Graphics Processor: Mesa DRI Intel® HD Graphics 4400
Comment 2 David Redondo 2021-11-04 08:54:15 UTC 
Hmm looks like an error when trying to create the wayland integration.
Can you spot something relevant in the journal?
Comment 3 yamiyukisenpai 2021-11-08 19:27:06 UTC 
(In reply to David Redondo from comment #2)
> Hmm looks like an error when trying to create the wayland integration.
> Can you spot something relevant in the journal?

```
Oct 21 05:13:37 KUROKA-Z40-Arch kernel: audit: type=1334 audit(1634807617.368:457): prog-id=28 op=UNLOAD
Oct 21 05:13:37 KUROKA-Z40-Arch kernel: audit: type=1334 audit(1634807617.368:456): prog-id=29 op=UNLOAD
Oct 21 05:13:37 KUROKA-Z40-Arch kernel: audit: type=1334 audit(1634807617.368:455): prog-id=30 op=UNLOAD
Oct 21 05:13:37 KUROKA-Z40-Arch audit: BPF prog-id=28 op=UNLOAD
Oct 21 05:13:37 KUROKA-Z40-Arch audit: BPF prog-id=29 op=UNLOAD
Oct 21 05:13:37 KUROKA-Z40-Arch audit: BPF prog-id=30 op=UNLOAD
Oct 21 05:13:37 KUROKA-Z40-Arch kernel: audit: type=1131 audit(1634807617.310:454): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-localed comm="systemd" exe="/usr/lib
/systemd/systemd" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:37 KUROKA-Z40-Arch kernel: kauditd_printk_skb: 13 callbacks suppressed
Oct 21 05:13:37 KUROKA-Z40-Arch audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-localed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? 
addr=? terminal=? res=success'
Oct 21 05:13:37 KUROKA-Z40-Arch systemd[1]: systemd-localed.service: Deactivated successfully.
Oct 21 05:13:10 KUROKA-Z40-Arch sddm-greeter[2571]: Message received from daemon: HostName
Oct 21 05:13:10 KUROKA-Z40-Arch sddm-greeter[2571]: Message received from daemon: Capabilities
Oct 21 05:13:10 KUROKA-Z40-Arch sddm-greeter[2571]: Adding view for "HDMI-1" QRect(1920,0 1920x1080)
Oct 21 05:13:10 KUROKA-Z40-Arch sddm-greeter[2571]: file:///usr/share/sddm/themes/breeze/components/VirtualKeyboard.qml:8:1: module "QtQuick.VirtualKeyboard" is not installed
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QQmlEngine::setContextForObject(): Object already has a QQmlContext
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QQmlEngine::setContextForObject(): Object already has a QQmlContext
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: Loading file:///usr/share/sddm/themes/breeze/Main.qml...
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: Adding view for "eDP-1" QRect(0,0 1920x1080)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: file:///usr/share/sddm/themes/breeze/components/VirtualKeyboard.qml:8:1: module "QtQuick.VirtualKeyboard" is not installed
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject::installEventFilter(): Cannot filter events for objects in a different thread.
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: QObject: Cannot create children for a parent that is in a different thread.
                                                    (Parent is QGuiApplication(0x7ffda9ff6fd0), parent's thread is QThread(0x5628206f3e10), current thread is QThread(0x562820831ab0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: Loading file:///usr/share/sddm/themes/breeze/Main.qml...
Oct 21 05:13:09 KUROKA-Z40-Arch sddm[546]: Message received from greeter: Connect
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: Connected to the daemon.
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: Reading from "/usr/share/xsessions/plasma.desktop"
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: Reading from "/usr/share/wayland-sessions/plasmawayland.desktop"
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-greeter[2571]: High-DPI autoscaling not Enabled
Oct 21 05:13:09 KUROKA-Z40-Arch sddm[546]: Greeter session started successfully
Oct 21 05:13:09 KUROKA-Z40-Arch audit[2570]: USER_START pid=2570 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:session_open grantors=pam_unix,pam_systemd acct="sddm" exe="/usr/li
b/sddm/sddm-helper" hostname=? addr=? terminal=:0 res=success'
Oct 21 05:13:09 KUROKA-Z40-Arch systemd[1]: Started Session c2 of User sddm.
Oct 21 05:13:09 KUROKA-Z40-Arch systemd-logind[386]: New session c2 of user sddm.
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-helper[2570]: [PAM] returning.
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-helper[2570]: pam_unix(sddm-greeter:session): session opened for user sddm(uid=973) by (uid=0)
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-helper[2570]: [PAM] Authenticating...
Oct 21 05:13:09 KUROKA-Z40-Arch audit[2570]: CRED_ACQ pid=2570 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:setcred grantors=pam_permit acct="sddm" exe="/usr/lib/sddm/sddm-helpe
r" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:09 KUROKA-Z40-Arch audit[2570]: USER_ACCT pid=2570 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:accounting grantors=pam_permit acct="sddm" exe="/usr/lib/sddm/sddm-h
elper" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:09 KUROKA-Z40-Arch audit[2570]: USER_AUTH pid=2570 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:authentication grantors=pam_permit acct="sddm" exe="/usr/lib/sddm/sd
dm-helper" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:09 KUROKA-Z40-Arch sddm-helper[2570]: [PAM] Starting...
Oct 21 05:13:09 KUROKA-Z40-Arch sddm[546]: Greeter starting...
Oct 21 05:13:09 KUROKA-Z40-Arch sddm[546]: Loading theme configuration from "/usr/share/sddm/themes/breeze/theme.conf"
Oct 21 05:13:09 KUROKA-Z40-Arch sddm[546]: Socket server started.
Oct 21 05:13:09 KUROKA-Z40-Arch sddm[546]: Socket server starting...
Oct 21 05:13:09 KUROKA-Z40-Arch sddm[546]: Display server started.
Oct 21 05:13:09 KUROKA-Z40-Arch sddm[546]: Running display setup script  "/usr/share/sddm/scripts/Xsetup"
Oct 21 05:13:09 KUROKA-Z40-Arch sddm[546]: Setting default cursor
Oct 21 05:13:08 KUROKA-Z40-Arch systemd-logind[386]: Session 4 logged out. Waiting for processes to exit.
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Running: /usr/bin/X -nolisten tcp -background none -seat seat0 vt1 -auth /var/run/sddm/{3a1fdc68-6b73-48cf-b0ae-981cb75665fb} -noreset -di
splayfd 18
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Adding cookie to "/var/run/sddm/{3a1fdc68-6b73-48cf-b0ae-981cb75665fb}"
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Display server starting...
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Loading theme configuration from ""
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Adding new display on vt 1 ...
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Removing display ":0" ...
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Running display stop script  "/usr/share/sddm/scripts/Xstop"
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Display server stopped.
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Display server stopping...
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Socket server stopped.
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Socket server stopping...
Oct 21 05:13:08 KUROKA-Z40-Arch sddm[546]: Auth: sddm-helper exited successfully
Oct 21 05:13:08 KUROKA-Z40-Arch sddm-helper[2508]: [PAM] Ended.
Oct 21 05:13:08 KUROKA-Z40-Arch audit[2508]: CRED_DISP pid=2508 uid=0 auid=1000 ses=4 msg='op=PAM:setcred grantors=pam_shells,pam_faillock,pam_permit,pam_faillock,pam_gnome_keyring 
acct="taliara69" exe="/usr/lib/sddm/sddm-helper" hostname=KUROKA-Z40-Arch addr=? terminal=/dev/tty2 res=success'
Oct 21 05:13:08 KUROKA-Z40-Arch audit[2508]: USER_END pid=2508 uid=0 auid=1000 ses=4 msg='op=PAM:session_close grantors=pam_keyinit,pam_loginuid,pam_keyinit,pam_limits,pam_unix,pam_
permit,pam_mail,pam_systemd,pam_env,pam_gnome_keyring,pam_kwallet5 acct="taliara69" exe="/usr/lib/sddm/sddm-helper" hostname=KUROKA-Z40-Arch addr=? terminal=/dev/tty2 res=success'
Oct 21 05:13:08 KUROKA-Z40-Arch sddm-helper[2508]: pam_kwallet5(sddm:setcred): pam_kwallet5: pam_sm_setcred
Oct 21 05:13:08 KUROKA-Z40-Arch sddm-helper[2508]: pam_kwallet5(sddm:session): pam_kwallet5: pam_sm_close_session
Oct 21 05:13:08 KUROKA-Z40-Arch sddm-helper[2508]: pam_unix(sddm:session): session closed for user taliara69
Oct 21 05:13:08 KUROKA-Z40-Arch sddm-helper[2508]: [PAM] Closing session
Oct 21 05:13:08 KUROKA-Z40-Arch ksplashqml[2544]: The Wayland connection broke. Did the Wayland compositor die?
Oct 21 05:13:08 KUROKA-Z40-Arch ksplashqml[2544]: The Wayland connection broke. Did the Wayland compositor die?
Oct 21 05:13:08 KUROKA-Z40-Arch dbus-daemon[2526]: [session uid=1000 pid=2526] Successfully activated service 'org.kde.KSplash'
Oct 21 05:13:08 KUROKA-Z40-Arch dbus-daemon[2526]: [session uid=1000 pid=2526] Activating service name='org.kde.KSplash' requested by ':1.3' (uid=1000 pid=2543 comm="/usr/lib/startp
lasma-waylandsession ")
Oct 21 05:13:07 KUROKA-Z40-Arch systemd[2489]: Started D-Bus User Message Bus.
Oct 21 05:13:07 KUROKA-Z40-Arch audit[1]: SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-localed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=?
 addr=? terminal=? res=success'
Oct 21 05:13:07 KUROKA-Z40-Arch systemd[1]: Started Locale Service.
Oct 21 05:13:07 KUROKA-Z40-Arch dbus-daemon[383]: [system] Successfully activated service 'org.freedesktop.locale1'
Oct 21 05:13:07 KUROKA-Z40-Arch systemd[1]: Starting Locale Service...
Oct 21 05:13:07 KUROKA-Z40-Arch audit: BPF prog-id=30 op=LOAD
Oct 21 05:13:07 KUROKA-Z40-Arch audit: BPF prog-id=29 op=LOAD
Oct 21 05:13:07 KUROKA-Z40-Arch audit: BPF prog-id=28 op=LOAD
Oct 21 05:13:07 KUROKA-Z40-Arch dbus-daemon[383]: [system] Activating via systemd: service name='org.freedesktop.locale1' unit='dbus-org.freedesktop.locale1.service' requested by ':
1.22' (uid=1000 pid=2518 comm="/usr/bin/startplasma-wayland ")
Oct 21 05:13:07 KUROKA-Z40-Arch sddm[546]: Session started
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2518]: VT mode didn't need to be fixed
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2518]: Jumping to VT 2
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: Starting: "/usr/share/sddm/scripts/wayland-session /usr/lib/plasma-dbus-run-session-if-needed /usr/bin/startplasma-wayland"
Oct 21 05:13:06 KUROKA-Z40-Arch audit[2508]: USER_START pid=2508 uid=0 auid=1000 ses=4 msg='op=PAM:session_open grantors=pam_keyinit,pam_loginuid,pam_keyinit,pam_limits,pam_unix,pam
_permit,pam_mail,pam_systemd,pam_env,pam_gnome_keyring,pam_kwallet5 acct="taliara69" exe="/usr/lib/sddm/sddm-helper" hostname=KUROKA-Z40-Arch addr=? terminal=/dev/tty2 res=success'
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2516]: pam_kwallet5: final socket path: /run/user/1000/kwallet5.socket
Oct 21 05:13:06 KUROKA-Z40-Arch systemd-logind[386]: Removed session c1.
Oct 21 05:13:06 KUROKA-Z40-Arch systemd-logind[386]: Session c1 logged out. Waiting for processes to exit.
Oct 21 05:13:06 KUROKA-Z40-Arch systemd[1]: session-c1.scope: Consumed 1.434s CPU time.
Oct 21 05:13:06 KUROKA-Z40-Arch sddm[546]: Greeter stopped.
Oct 21 05:13:06 KUROKA-Z40-Arch systemd[1]: session-c1.scope: Deactivated successfully.
Oct 21 05:13:06 KUROKA-Z40-Arch sddm[546]: Auth: sddm-helper exited successfully
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[1054]: [PAM] Ended.
Oct 21 05:13:06 KUROKA-Z40-Arch audit[1054]: CRED_DISP pid=1054 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:setcred grantors=pam_permit acct="sddm" exe="/usr/lib/sddm/sddm-help
er" hostname=? addr=? terminal=:0 res=success'
Oct 21 05:13:06 KUROKA-Z40-Arch audit[1054]: USER_END pid=1054 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:session_close grantors=pam_unix,pam_systemd acct="sddm" exe="/usr/lib
/sddm/sddm-helper" hostname=? addr=? terminal=:0 res=success'
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[1054]: pam_unix(sddm-greeter:session): session closed for user sddm
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[1054]: [PAM] Closing session
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: pam_kwallet5(sddm:session): pam_kwallet5: pam_sm_open_session
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: gkr-pam: gnome-keyring-daemon started properly and unlocked keyring
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: pam_env(sddm:session): deprecated reading of user environment enabled
Oct 21 05:13:06 KUROKA-Z40-Arch systemd[1]: Started Session 4 of User taliara69.
Oct 21 05:13:06 KUROKA-Z40-Arch systemd-logind[386]: New session 4 of user taliara69.
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-greeter[1232]: Message received from daemon: LoginSucceeded
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: pam_unix(sddm:session): session opened for user taliara69(uid=1000) by (uid=0)
Oct 21 05:13:06 KUROKA-Z40-Arch kernel: audit: type=1327 audit(1634807586.809:440): proctitle=2F7573722F6C69622F7364646D2F7364646D2D68656C706572002D2D736F636B6574002F746D702F7364646
D2D6175746833633765376631372D376565362D343566642D623739382D656266353065366531613661002D2D69640031002D2D7374617274002F7573722F6C69622F706C61736D612D646275732D72756E2D7365
Oct 21 05:13:06 KUROKA-Z40-Arch kernel: audit: type=1300 audit(1634807586.809:440): arch=c000003e syscall=1 success=yes exit=4 a0=8 a1=7ffc99e39af0 a2=4 a3=3e8 items=0 ppid=546 pid=
2508 auid=1000 uid=0 gid=0 euid=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4 comm="sddm-helper" exe="/usr/lib/sddm/sddm-helper" key=(null)
Oct 21 05:13:06 KUROKA-Z40-Arch kernel: audit: type=1006 audit(1634807586.809:440): pid=2508 uid=0 old-auid=4294967295 auid=1000 tty=(none) old-ses=4294967295 ses=4 res=1
Oct 21 05:13:06 KUROKA-Z40-Arch kernel: audit: type=1103 audit(1634807586.809:439): pid=2508 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:setcred grantors=pam_shells,pam_failloc
k,pam_permit,pam_faillock,pam_gnome_keyring acct="taliara69" exe="/usr/lib/sddm/sddm-helper" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:06 KUROKA-Z40-Arch audit: PROCTITLE proctitle=2F7573722F6C69622F7364646D2F7364646D2D68656C706572002D2D736F636B6574002F746D702F7364646D2D6175746833633765376631372D376565
362D343566642D623739382D656266353065366531613661002D2D69640031002D2D7374617274002F7573722F6C69622F706C61736D612D646275732D72756E2D7365
Oct 21 05:13:06 KUROKA-Z40-Arch audit[2508]: SYSCALL arch=c000003e syscall=1 success=yes exit=4 a0=8 a1=7ffc99e39af0 a2=4 a3=3e8 items=0 ppid=546 pid=2508 auid=1000 uid=0 gid=0 euid
=0 suid=0 fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=4 comm="sddm-helper" exe="/usr/lib/sddm/sddm-helper" key=(null)
Oct 21 05:13:06 KUROKA-Z40-Arch audit[2508]: CRED_ACQ pid=2508 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:setcred grantors=pam_shells,pam_faillock,pam_permit,pam_faillock,pam_
gnome_keyring acct="taliara69" exe="/usr/lib/sddm/sddm-helper" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: pam_kwallet5(sddm:setcred): pam_kwallet5: pam_sm_setcred
Oct 21 05:13:06 KUROKA-Z40-Arch kernel: audit: type=1101 audit(1634807586.808:438): pid=2508 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:accounting grantors=pam_access,pam_unix
,pam_permit,pam_time acct="taliara69" exe="/usr/lib/sddm/sddm-helper" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:06 KUROKA-Z40-Arch sddm[546]: Authenticated successfully
Oct 21 05:13:06 KUROKA-Z40-Arch audit[2508]: USER_ACCT pid=2508 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:accounting grantors=pam_access,pam_unix,pam_permit,pam_time acct="ta
liara69" exe="/usr/lib/sddm/sddm-helper" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: pam_systemd_home(sddm:account): systemd-homed is not available: Unit dbus-org.freedesktop.home1.service not found.
Oct 21 05:13:06 KUROKA-Z40-Arch dbus-daemon[383]: [system] Activation via systemd failed for unit 'dbus-org.freedesktop.home1.service': Unit dbus-org.freedesktop.home1.service not f
ound.
Oct 21 05:13:06 KUROKA-Z40-Arch dbus-daemon[383]: [system] Activating via systemd: service name='org.freedesktop.home1' unit='dbus-org.freedesktop.home1.service' requested by ':1.19
' (uid=0 pid=2508 comm="/usr/lib/sddm/sddm-helper --socket /tmp/sddm-auth3")
Oct 21 05:13:06 KUROKA-Z40-Arch kernel: audit: type=1100 audit(1634807586.807:437): pid=2508 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:authentication grantors=pam_shells,pam_
faillock,pam_permit,pam_faillock,pam_gnome_keyring acct="taliara69" exe="/usr/lib/sddm/sddm-helper" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: pam_kwallet5(sddm:auth): pam_kwallet5: pam_sm_authenticate
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: gkr-pam: stashed password to try later in open session
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: [PAM] returning.
Oct 21 05:13:06 KUROKA-Z40-Arch audit[2508]: USER_AUTH pid=2508 uid=0 auid=4294967295 ses=4294967295 msg='op=PAM:authentication grantors=pam_shells,pam_faillock,pam_permit,pam_faill
ock,pam_gnome_keyring acct="taliara69" exe="/usr/lib/sddm/sddm-helper" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: gkr-pam: unable to locate daemon control file
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: [PAM] Conversation with 1 messages
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: [PAM] Preparing to converse...
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: [PAM] Authenticating...
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-helper[2508]: [PAM] Starting...
Oct 21 05:13:06 KUROKA-Z40-Arch sddm[546]: Session "/usr/share/wayland-sessions/plasmawayland.desktop" selected, command: "/usr/lib/plasma-dbus-run-session-if-needed /usr/bin/startp
lasma-wayland"
Oct 21 05:13:06 KUROKA-Z40-Arch sddm[546]: Reading from "/usr/share/wayland-sessions/plasmawayland.desktop"
Oct 21 05:13:06 KUROKA-Z40-Arch sddm[546]: Reading from "/usr/share/wayland-sessions/plasmawayland.desktop"
Oct 21 05:13:06 KUROKA-Z40-Arch sddm[546]: Message received from greeter: Login
Oct 21 05:13:06 KUROKA-Z40-Arch sddm-greeter[1232]: Reading from "/usr/share/wayland-sessions/plasmawayland.desktop"
Oct 21 05:13:04 KUROKA-Z40-Arch kernel: audit: type=1334 audit(1634807584.972:436): prog-id=20 op=UNLOAD
Oct 21 05:13:04 KUROKA-Z40-Arch kernel: audit: type=1334 audit(1634807584.972:435): prog-id=21 op=UNLOAD
Oct 21 05:13:04 KUROKA-Z40-Arch kernel: audit: type=1334 audit(1634807584.972:434): prog-id=22 op=UNLOAD
Oct 21 05:13:04 KUROKA-Z40-Arch audit: BPF prog-id=20 op=UNLOAD
Oct 21 05:13:04 KUROKA-Z40-Arch audit: BPF prog-id=21 op=UNLOAD
Oct 21 05:13:04 KUROKA-Z40-Arch audit: BPF prog-id=22 op=UNLOAD
Oct 21 05:13:04 KUROKA-Z40-Arch audit[1]: SERVICE_STOP pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/lib/systemd/systemd" hostname=
? addr=? terminal=? res=success'
Oct 21 05:13:04 KUROKA-Z40-Arch kernel: audit: type=1131 audit(1634807584.913:433): pid=1 uid=0 auid=4294967295 ses=4294967295 msg='unit=systemd-hostnamed comm="systemd" exe="/usr/l
ib/systemd/systemd" hostname=? addr=? terminal=? res=success'
Oct 21 05:13:04 KUROKA-Z40-Arch kernel: kauditd_printk_skb: 11 callbacks suppressed
Oct 21 05:13:04 KUROKA-Z40-Arch systemd[1]: systemd-hostnamed.service: Deactivated successfully.
```

Does this help?
Comment 4 David Edmundson 2022-01-09 21:52:14 UTC 
>Does this help?

It does not. It all stops before kwin loads.

~/.local/share/sddm/wayland-session.log might have something
Comment 5 Bug Janitor Service 2022-01-24 04:37:32 UTC 
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 6 yamiyukisenpai 2022-01-27 09:02:51 UTC 
Feel free to close this.  Haven't experienced it in a while
Comment 7 Nate Graham 2022-01-27 15:33:07 UTC 
Cool.