To check the status of the Event-Driver in Smarts SAM for an underlying Smarts IP domain, use the following Smarts dmctl command:
dmctl -s <SAM_server> get GA_DaemonDriver::<UnderlyingDomain>_Event-Driver::state
The expected state for a running Event-Driver is GA_DRIVER_RUNNING.
If it is not running you can run the following command to start it:
dmctl -s <SAM_server> invoke GA_DaemonDriver::<UnderlyingDomain>_Event-Driver start