https://bugs.kde.org/show_bug.cgi?id=461475
Bug ID: 461475
Summary: Login immediately after Logout may fail if systemd
service stops too slowly
Classification: Plasma
Product: plasmashell
Version: 5.26.2
Platform: Archlinux
OS: Linux
Status: REPORTED
Severity: minor
Priority: NOR
Component: Startup process
Assignee: plasma-b...@kde.org
Reporter: jol...@einhornkeks.de
CC: k...@davidedmundson.co.uk
Target Milestone: 1.0
SUMMARY
If using the systemd startup and a user service takes too long to shut down, a
future login may fail.
STEPS TO REPRODUCE
1. Ensure Plasma uses the systemd startup
2. Have a systemd user service which is very slow to shutdown (like /bin/bash
-c 'trap -- "" SIGINT SIGTERM; while true; do sleep 1000; done' in autostart,
but the virtualbox guest additions work too)
3. Logoff and then login again very quickly (can use SDDM autologin for this)
OBSERVED RESULT
Login fails with mouse cursor on black background.
session log says org.kde.startup: Could not start systemd managed Plasma
session: "org.freedesktop.systemd1.TransactionIsDestructive" "Transaction for
plasma-workspace-x11.target/start is destructive (graphical-session.target has
'stop' job queued, but 'start' is included in transaction)."
EXPECTED RESULT
Login works normally
ADDITIONAL INFORMATION
I believe that on logout, startplasma-{wayland,x11} should wait for
graphical-session.target to stop instead of waiting for a DBUS name to
disappear. I'll try to create a patch in the next few days.
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