According to Ekos' current specification, it is not possible to forcibly terminate or restart individual drivers after launching the driver.
If there is a problem with the driver, the INDI control panel will not be turned on / off, so the zombie process will remain.
(It is the basis of trouble.)
I hope to forcibly terminate the driver and add a restart function of Ekos.
I currently have problems with the QHY driver.
If that driver becomes unusable, you will need to restart all other drivers.
This is inconvenient because it is necessary to restart the mount driver and the normally running driver, for example the focusing device.