Bug#846940: org.kde.KScreen floods journal log with RRNotify_OutputProperty (ignored)

[koos vriezen <koos.vriezen@gmail.com>]

Package: libkf5screen-bin
Version:  4:5.8.4-1

On KDE startup and then periodically I get a huge burst of

org.kde.KScreen[1167]: kscreen.xcb.helper: RRNotify_OutputProperty (ignored)
org.kde.KScreen[1167]: kscreen.xcb.helper:         Output:  67
org.kde.KScreen[1167]: kscreen.xcb.helper:         Property:  Backlight
org.kde.KScreen[1167]: kscreen.xcb.helper:         State (newValue, Deleted):  0

messages in the user journal log. The severity is warn and the PID is
from dbus-daemon -session

I couldn't find a way to limit these logs w/o also limiting system
messages. In the dbus sources though I saw that the stdio from the
spawned processes is apparently forwarded to the syslog. So I ended up
changing the
/usr/share/dbus-1/services/org.kde.kscreen.service
to

[D-BUS Service]
Name=org.kde.KScreen
Exec=/bin/sh -c
'/usr/lib/x86_64-linux-gnu/libexec/kf5/kscreen_backend_launcher
>/dev/null 2>/dev/null'

which indeed helps.
IMHO kscreen should log these warnings once.


Best regards,

Koos Vriezen