https://bugs.kde.org/show_bug.cgi?id=467547
Bug ID: 467547
Summary: Logging out of Plasma 5.27.3 on Wayland as the second
user on the system resulted in a black screen
Classification: Plasma
Product: kwin
Version: 5.27.3
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: wayland-generic
Assignee: kwin-bugs-n...@kde.org
Reporter: matt.fagn...@bell.net
Target Milestone: ---
Created attachment 157405
--> https://bugs.kde.org/attachment.cgi?id=157405&action=edit
Journal for boot of Fedora-KDE-Live-x86_64-38-20230318.n.0.iso in a QEMU/KVM VM
in GNOME Boxes in which the black screen happened 3 times
SUMMARY
I'm using a Fedora 38 KDE Plasma installation with two users. I logged in to
Plasma 5.27.3 on Wayland as the second user, and then I logged out of Plasma.
The system just showed a black screen with a blinking text cursor at the
top-left of the screen. I switched to another VT and logged in. systemctl
status sddm showed that sddm was running while the black screen happened. I ran
sudo systemctl restart sddm which showed sddm on Wayland with the kwin_wayland
compositor. This problem didn't happen when I logged in as the first user and
logged out.
I reproduced this problem using Fedora-KDE-Live-x86_64-38-20230318.n.0.iso in a
QEMU/KVM VM in GNOME Boxes. I created a second user in System Settings in
Plasma 5.27.3 on Wayland. I logged out and logged in as the second user. I
logged out as the second user. The journal showed that
dbus-:1.2-org.kde.LogoutPrompt@0.service failed and kwin_wayland_wrapper had an
error (EE) failed to read Wayland events: Broken pipe. Various KDE programs had
errors like The Wayland connection broke. Did the Wayland compositor die?
kwin_wayland might've stopped before the other KDE programs leading to those
errors.
Mar 18 17:46:48 systemd[2832]: Started
dbus-:1.2-org.kde.LogoutPrompt@0.service.
Mar 18 17:46:49 ksmserver-logout-greeter[4260]: libEGL warning: egl: failed to
create dri2 screen
Mar 18 17:46:49 kernel: Lockdown: systemd-logind: hibernation is restricted;
see man kernel_lockdown.7
Mar 18 17:46:49 kernel: Lockdown: systemd-logind: hibernation is restricted;
see man kernel_lockdown.7
Mar 18 17:46:49 kernel: Lockdown: systemd-logind: hibernation is restricted;
see man kernel_lockdown.7
Mar 18 17:46:49 ksmserver-logout-greeter[4260]: qt.qpa.wayland: Wayland does
not support QWindow::requestActivate()
Mar 18 17:46:49 ksmserver-logout-greeter[4260]: qt.qpa.wayland: Wayland does
not support QWindow::requestActivate()
Mar 18 17:46:51 systemd[2832]: Started dbus-:1.2-org.kde.Shutdown@0.service.
Mar 18 17:46:51 systemd[2832]: dbus-:1.2-org.kde.LogoutPrompt@0.service: Main
process exited, code=exited, status=1/FAILURE
Mar 18 17:46:51 systemd[2832]: dbus-:1.2-org.kde.LogoutPrompt@0.service: Failed
with result 'exit-code'.
Mar 18 17:46:51 systemd[2832]: dbus-:1.2-org.kde.LogoutPrompt@0.service:
Consumed 1.976s CPU time.
Mar 18 17:46:52 kwin_wayland_wrapper[2982]: (EE) failed to read Wayland events:
Broken pipe
Mar 18 17:46:52 kded5[3076]: X connection to :0 broken (explicit kill or server
shutdown).
Mar 18 17:46:52 kaccess[3353]: The X11 connection broke (error 1). Did the X11
server die?
Mar 18 17:46:52 systemd[2832]: app-kaccess@autostart.service: Main process
exited, code=exited, status=1/FAILURE
Mar 18 17:46:52 systemd[2832]: app-kaccess@autostart.service: Failed with
result 'exit-code'.
Mar 18 17:46:52 kwin_wayland[2910]: QtDBus: cannot relay signals from parent
QObject(0x561525cd4740 "") unless they are emitted in the object's thread
QThread(0x561525bd5cb8 "libinput-connection"). Current thread is
QThread(0x561525b95790 "").
Mar 18 17:46:52 imsettings-daemon[3367]: [ 52.190749]:
IMSettings-Daemon[3367]: INFO: Stopped main process for IBus with the status 0
[pid: 3647]
Mar 18 17:46:52 kwalletd5[2855]: The Wayland connection broke. Did the Wayland
compositor die?
Mar 18 17:46:52 kded5[3004]: The Wayland connection broke. Did the Wayland
compositor die?
Mar 18 17:46:52 kactivitymanagerd[3036]: The Wayland connection broke. Did the
Wayland compositor die?
Mar 18 17:46:52 DiscoverNotifier[3355]: The Wayland connection broke. Did the
Wayland compositor die?
Mar 18 17:46:52 akonadi_control[3646]: The Wayland connection broke. Did the
Wayland compositor die?
Mar 18 17:46:52 kded5[3004]: The Wayland connection broke. Did the Wayland
compositor die?
Mar 18 17:46:52 polkit-kde-authentication-agent-1[3096]: The Wayland connection
broke. Did the Wayland compositor die?
Mar 18 17:46:52 kdeconnectd[3341]: The Wayland connection broke. Did the
Wayland compositor die?
Mar 18 17:46:52 xdg-desktop-por[3171]: Lost connection to Wayland compositor.
Mar 18 17:46:52 xdg-desktop-portal-kde[3099]: The Wayland connection broke. Did
the Wayland compositor die?
Mar 18 17:46:52 akonadi_sendlater_agent[3862]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 akonadi_followupreminder_agent[3871]: The Wayland connection
broke. Did the Wayland compositor die?
Mar 18 17:46:52 plasmashell[3037]: The Wayland connection broke. Did the
Wayland compositor die?
Mar 18 17:46:52 kalendarac[3358]: The Wayland connection broke. Did the Wayland
compositor die?
Mar 18 17:46:52 akonadi_migration_agent[3869]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 akonadi_mailfilter_agent[3859]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 akonadi_ical_resource[4180]: The Wayland connection broke. Did
the Wayland compositor die?
Mar 18 17:46:52 akonadi_archivemail_agent[3874]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 akonadi_akonotes_resource[4197]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 akonadi_contacts_resource[4143]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 org_kde_powerdevil[3097]: The Wayland connection broke. Did the
Wayland compositor die?
Mar 18 17:46:52 systemd[2832]: plasma-xdg-desktop-portal-kde.service: Main
process exited, code=exited, status=1/FAILURE
Mar 18 17:46:52 systemd[2832]: plasma-xdg-desktop-portal-kde.service: Failed
with result 'exit-code'.
Mar 18 17:46:52 akonadi_contacts_resource[4143]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 systemd[2832]: plasma-kactivitymanagerd.service: Main process
exited, code=exited, status=1/FAILURE
Mar 18 17:46:52 systemd[2832]: plasma-kactivitymanagerd.service: Failed with
result 'exit-code'.
Mar 18 17:46:52 akonadi_indexing_agent[3873]: The Wayland connection broke. Did
the Wayland compositor die?
Mar 18 17:46:52 akonadi_mailmerge_agent[3868]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 akonadi_birthdays_resource[3883]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 akonadi_unifiedmailbox_agent[3872]: The Wayland connection
broke. Did the Wayland compositor die?
Mar 18 17:46:52 akonadi_newmailnotifier_agent[3875]: The Wayland connection
broke. Did the Wayland compositor die?
Mar 18 17:46:52 systemd[2832]: plasma-polkit-agent.service: Main process
exited, code=exited, status=1/FAILURE
Mar 18 17:46:52 akonadi_indexing_agent[3873]: The Wayland connection broke. Did
the Wayland compositor die?
Mar 18 17:46:52 systemd[2832]: plasma-polkit-agent.service: Failed with result
'exit-code'.
Mar 18 17:46:52 akonadi_maildir_resource[4085]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 akonadi_mailmerge_agent[3868]: The Wayland connection broke.
Did the Wayland compositor die?
Mar 18 17:46:52 systemd[2832]: xdg-desktop-portal-gtk.service: Main process
exited, code=exited, status=1/FAILURE
Mar 18 17:46:52 systemd[2832]: xdg-desktop-portal-gtk.service: Failed with
result 'exit-code'.
Mar 18 17:46:52 akonadiserver[3750]: org.kde.pim.akonadiserver: Subscriber
"AgentBaseChangeRecorder - 94521374331440" disconnected
Mar 18 17:46:52 systemd[2832]: plasma-kded.service: Main process exited,
code=exited, status=1/FAILURE
Mar 18 17:46:52 systemd[2832]: plasma-kded.service: Failed with result
'exit-code'.
Mar 18 17:46:52 systemd[2832]: plasma-kded.service: Consumed 2.695s CPU time.
Mar 18 17:46:52 akonadiserver[3750]: org.kde.pim.akonadiserver: Subscriber
"AgentBaseChangeRecorder - 93876285905392" disconnected
Mar 18 17:46:52 akonadiserver[3750]: org.kde.pim.akonadiserver: Subscriber
"AgentBaseChangeRecorder - 94562859011440" disconnected
Mar 18 17:46:52 akonadiserver[3750]: org.kde.pim.akonadiserver: Subscriber
"AgentBaseChangeRecorder - 93941736334592" disconnected
Mar 18 17:46:52 akonadiserver[3750]: org.kde.pim.akonadiserver: Subscriber
"AgentBaseChangeRecorder - 93848135508064" disconnected
Mar 18 17:46:52 polkitd[1072]: Unregistered Authentication Agent for
unix-session:4 (system bus name :1.128, object path
/org/kde/PolicyKit1/AuthenticationAgent, locale en_US.UTF-8) (disconnected from
bus)
Mar 18 17:46:52 systemd[2832]: plasma-powerdevil.service: Main process exited,
code=exited, status=1/FAILURE
Mar 18 17:46:52 systemd[2832]: plasma-powerdevil.service: Failed with result
'exit-code'.
Mar 18 17:46:52 systemd[2832]: app-org.kde.kdeconnect.daemon@autostart.service:
Main process exited, code=exited, status=1/FAILURE
Mar 18 17:46:52 systemd[2832]: app-org.kde.kdeconnect.daemon@autostart.service:
Failed with result 'exit-code'.
Mar 18 17:46:52 systemd[2832]: app-org.kde.kdeconnect.daemon@autostart.service:
Consumed 1.167s CPU time.
Mar 18 17:46:52 akonadiserver[3750]: org.kde.pim.akonadiserver: Subscriber
"AgentBaseChangeRecorder - 94567479754624" disconnected
Mar 18 17:46:52 systemd[2832]: Stopped target plasma-workspace-wayland.target.
Mar 18 17:46:52 systemd[2832]: plasma-kwin_wayland.service: Consumed 36.530s
CPU time.
Mar 18 17:46:52 systemd[2832]: Stopped target plasma-workspace.target - KDE
Plasma Workspace.
Mar 18 17:46:52 akonadi_maildispatcher_agent[3870]: The Wayland connection
broke. Did the Wayland compositor die?
Mar 18 17:46:52 systemd[2832]: Stopped target xdg-desktop-autostart.target -
Startup of XDG autostart applications.
Mar 18 17:46:52 systemd[2832]: Stopping
app-geoclue\x2ddemo\x2dagent@autostart.service - Geoclue Demo agent...
Mar 18 17:46:52 systemd[2832]: Stopping
app-org.freedesktop.problems.applet@autostart.service - Problem Reporting...
Mar 18 17:46:52 systemd[2832]: Stopping
app-org.kde.discover.notifier@autostart.service - Discover...
Mar 18 17:46:52 systemd[2832]: Stopping
app-org.kde.kalendarac@autostart.service - Calendar Reminders...
Mar 18 17:46:52 dbus-broker[3215]: Dispatched 68 messages @ 41(±159)μs /
message.
Mar 18 17:46:52 systemd[2832]: Stopping at-spi-dbus-bus.service - Accessibility
services bus...
Mar 18 17:46:52 systemd[2832]: Stopped plasma-polkit-agent.service - KDE
PolicyKit Authentication Agent.
Mar 18 17:46:52 systemd[2832]: Stopped plasma-powerdevil.service - Powerdevil.
Mar 18 17:46:52 systemd[2832]: Stopped target plasma-core.target - KDE Plasma
Workspace Core.
Mar 18 17:46:52 systemd[2832]: Stopping plasma-plasmashell.service - KDE Plasma
Workspace...
Mar 18 17:46:52 systemd[2832]: Stopping xdg-desktop-portal.service - Portal
service...
Mar 18 17:46:52 systemd[2832]: Stopping xdg-document-portal.service - flatpak
document portal service...
Mar 18 17:46:52 systemd[2832]: Stopping xdg-permission-store.service -
sandboxed app permission store...
Mar 18 17:46:52 systemd[2832]: Stopped xdg-desktop-portal.service - Portal
service.
Mar 18 17:46:52 systemd[2832]: Stopped xdg-permission-store.service - sandboxed
app permission store.
Mar 18 17:46:52 systemd[1]: run-user-1001-doc.mount: Deactivated successfully.
Mar 18 17:46:52 systemd[2832]: plasma-plasmashell.service: Main process exited,
code=exited, status=1/FAILURE
Mar 18 17:46:52 systemd[2832]: plasma-plasmashell.service: Failed with result
'exit-code'.
Mar 18 17:46:52 systemd[2832]: Stopped plasma-plasmashell.service - KDE Plasma
Workspace.
Mar 18 17:46:52 systemd[2832]: plasma-plasmashell.service: Consumed 28.081s CPU
time.
Mar 18 17:46:52 systemd[2832]: Stopped at-spi-dbus-bus.service - Accessibility
services bus.
Mar 18 17:46:52 systemd[2832]: Stopped
app-org.freedesktop.problems.applet@autostart.service - Problem Reporting.
Mar 18 17:46:52 systemd[2832]: Stopped
app-geoclue\x2ddemo\x2dagent@autostart.service - Geoclue Demo agent.
Mar 18 17:46:52 systemd[2832]: app-org.kde.discover.notifier@autostart.service:
Main process exited, code=exited, status=1/FAILURE
Mar 18 17:46:52 systemd[2832]: app-org.kde.discover.notifier@autostart.service:
Failed with result 'exit-code'.
Mar 18 17:46:52 systemd[2832]: Stopped
app-org.kde.discover.notifier@autostart.service - Discover.
Mar 18 17:46:52 systemd[2832]: app-org.kde.kalendarac@autostart.service: Main
process exited, code=exited, status=1/FAILURE
Mar 18 17:46:52 systemd[2832]: Stopped xdg-document-portal.service - flatpak
document portal service.
Mar 18 17:46:52 systemd[2832]: app-org.kde.kalendarac@autostart.service: Failed
with result 'exit-code'.
Mar 18 17:46:52 systemd[2832]: Stopped app-org.kde.kalendarac@autostart.service
- Calendar Reminders.
Mar 18 17:46:52 systemd[2832]: app-org.kde.kalendarac@autostart.service:
Consumed 18.749s CPU time.
Mar 18 17:46:52 systemd[2832]: Stopped target graphical-session.target -
Current graphical user session.
Mar 18 17:46:52 systemd[2832]: Stopped target graphical-session-pre.target -
Session services which should run early before the graphical session is brought
up.
Mar 18 17:46:52 systemd[2832]: Stopping uresourced.service - User resource
assignment daemon...
Mar 18 17:46:52 systemd[2832]: Stopped uresourced.service - User resource
assignment daemon.
Mar 18 17:47:24 spice-vdagentd[1431]: Error getting active session: No data
available
Mar 18 17:47:24 spice-vdagentd[1431]: Error getting active session: No data
available
coredumpctl didn't show crashes for the logouts when the black screen problem
happened. The black screen happened 3/3 times when logging out as the second
user from the Fedora 38 installation and 3/3 times when logging out as the
second user in the VM. I'm attaching the journal of the boot of the VM in which
the problem happened 3 times.
STEPS TO REPRODUCE
1. Boot a Fedora 38 KDE Plasma installation updated to 2023-3-18 with
updates-testing enabled with two users
2. Log in to Plasma on Wayland as the second user from sddm on Wayland
3. Log out of Plasma
OBSERVED RESULT
Logging out of Plasma 5.27.3 on Wayland as the second user on the system
resulted in a black screen
EXPECTED RESULT
sddm would be shown instead of a black screen when logging out as the second
user
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora 38
(available in About System)
KDE Plasma Version: 5.27.3
KDE Frameworks Version: 5.104.0
Qt Version: 5.15.8
ADDITIONAL INFORMATION
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