https://bugs.kde.org/show_bug.cgi?id=389660
Bug ID: 389660
Summary: Lot of "org.kde.powerdevil.backlighthelper[PID]:
QDBusArgument: read from a write-only object" in
journal log
Product: Powerdevil
Version: 5.11.95
Platform: openSUSE RPMs
OS: Linux
Status: UNCONFIRMED
Severity: minor
Priority: NOR
Component: general
Assignee: plasma-b...@kde.org
Reporter: z...@cnzhx.net
Target Milestone: ---
I am using a laptop with openSUSE Tumbleweed. Recently I noticed there are a
lot of messages like following in the journal log,
```
Jan 30 22:18:07 ostw org.kde.powerdevil.backlighthelper[28142]: QDBusArgument:
read from a write-only object
Jan 30 22:18:07 ostw org.kde.powerdevil.backlighthelper[28142]: QDBusArgument:
read from a write-only object
Jan 30 22:18:07 ostw org.kde.powerdevil.backlighthelper[28142]: QDBusArgument:
read from a write-only object
Jan 30 22:18:07 ostw dbus-daemon[1133]: [system] Successfully activated service
'org.kde.powerdevil.backlighthelper'
Jan 30 22:19:11 ostp dbus-daemon[1133]: [system] Activating service
name='org.kde.powerdevil.backlighthelper' requested by ':1.44' (uid=1000
pid=2615 comm="/usr/lib64/libexec/org_kde_powerdevil -session 101") (using
servicehelper)
Jan 30 22:19:11 ostw org.kde.powerdevil.backlighthelper[28587]: QDBusArgument:
read from a write-only object
Jan 30 22:19:11 ostw org.kde.powerdevil.backlighthelper[28587]: QDBusArgument:
read from a write-only object
Jan 30 22:19:11 ostw org.kde.powerdevil.backlighthelper[28587]: QDBusArgument:
read from a write-only object
Jan 30 22:19:11 ostw dbus-daemon[1133]: [system] Successfully activated service
'org.kde.powerdevil.backlighthelper'
```
When using `journalctl -f` to track the events, I found this kind of messages
pops up when the system reducing and restoring the screen backlight.
This is not a problem but I think the three duplicated messages in the middle
are not necessary to normal user and may cause confusion. However, I do not
know whether they are related to something bigger.
Could anyone look into this and do something like either suppressing the
messages or fixing the problem when it is necessary?
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