Moin, from time to time I see warnings like this Failed to connect to Udev serviceHelper daemon via D-Bus: org.freedesktop.DBus.Error.ServiceUnknown I can reproduce it in a VM with a fresh Debian testing and BIT from upstream master repo. Which package is might be missing here? This is the full terminal output user@Barclay ~/backintime/common (master)$ ./backintime Back In Time Version: 1.3.2 Back In Time comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to redistribute it under certain conditions; type `backintime --license' for details. WARNING: Failed to connect to Udev serviceHelper daemon via D-Bus: org.freedesktop.DBus.Error.ServiceUnknown WARNING: D-Bus message: The name net.launchpad.backintime.serviceHelper was not provided by any .service files WARNING: Udev-based profiles cannot be changed or checked due to Udev serviceHelper connection failure