GDBus error [SOLVED]

[apiaio]

After last world update lxde startup gives error message

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Error initializing authority: Error calling StartServiceByName for org.freedesktop.PolicyKit1: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.PolicyKit1: Permission denied

Shutdown or reboot is possible from command line only.

[Moderator edit: changed [quote] tags to [code] tags to preserve output layout. -Hu]

[apiaio]

Up to now not solved. There must be something wrong with polkit. Every polkit command e.g.

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# pkaction
Error getting authority: Error initializing authority: Error calling StartServiceByName for org.freedesktop.PolicyKit1: GDBus.Error:org.freedesktop.DBus.Error.Spawn.ExecFailed: Failed to execute program org.freedesktop.PolicyKit1: Permission denied

gives the same error message.
Edit:
This problem I have in profile 17.0. Old installation 13.0 is OK. Both amd64. In the meantime I upgraded world - no change.

[apiaio]

After endless searching in different linux distros I found the clue in Gentoo forums:
https://forums.gentoo.org/viewtopic-t-1 ... art-0.html

Novazur's problem was different, but solution is the same:
GID of the messagebus in /etc/group and /etc/passwd has to be equal.

[SimonLitt]

I had a similar issue.

The permissions of the /usr/libexec/dbus-daemon-launch-helper file were root:scanner.
Changing permissions to root:messagebus solves the issue.

[Hu]

SimonLitt: what is the output of grep -n -e scanner -e messagebus /etc/group /etc/passwd?