The linux-image is the actual linux kernel binary package. The other two packages contain kernel header files - I think they are used mainly if you have any kernel modules that get compiled automatically upon kernel installation. Yes, I believe you do need to install them all (linux-image depends on the header packages).
The linux-image is the actual linux kernel binary package. The other two packages contain kernel header files - I think they are used mainly if you have any kernel modules that get compiled automatically upon kernel installation. Yes, I believe you do need to install them all (linux-image depends on the header packages).