I get some various errors at boot from dbus in my logs:
Rejected send message, 2 matched rules; type="method_call" ...
I've been running this Debian sid system (systemd init) for years, so I suspect a bad mix of configuration.
Usually this type of problems can be fixed with
apt-get purge package apt-get install package
But dbus being a low-level dependency it would remove pretty much all my packages.
/etc/dbus-1/system.d has quite some files in it, I'm not sure if erasing them is a good idea.
How can I proceed ?