@Daniel Phillips: Initially I just installed "linux-image-rt" but you should probably install the package "linux-rt" from Synaptic (or via apt-get or whatever) which will ensure updates etc work correctly.
@Daniel Phillips: Initially I just installed "linux-image-rt" but you should probably install the package "linux-rt" from Synaptic (or via apt-get or whatever) which will ensure updates etc work correctly.