You want to use the
pmi tool from the
powermanagement-interface package, e.g. to standby your Linux computer using the command line, but you get an error message like this:
Error org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Hal was not provided by any .service files
PMI requires the hardware abstraction layer (HAL) library in order to use ACPI services.
hal package, e.g. by using
sudo apt-get install hal
This solution might also apply to other tools beyond
pmi that yield the same error message.