Deafness in dalmatians

In 2005 Dr Strain wrote about deafness, especially with reference to dalmatians in

This article suggests that deafness is a very complicated genetic inheritance. Although his tables show a simple dominant recessive pattern and probable incidence, his article does not come to this conclusion.

An article in DogWorld (18 February 2011) says that a project investigating the very complicated inheritance surrounding the incidence of hip dysplasia and elbow problems. The dalmatian community could learn something from it, in particular how complicated genetic inheritance can be investigated.

Have you any further thoughts about deafness?