I use an RPi4 as a headless server running scscynth and driving an 8 channel DAC. The client is a Mac running the IDE. I had not used the system for some time, so I decided to go through the update, upgrade, dist-upgrade steps and then rebuild jackd and SC3 in non-gui mode.
The mystery is that when I drive this new 3.13.0-dev installation from an older Mac (10.11) running the 3.12.2 “legacy” distro, it works just fine, or to paraphrase the middle-aged Beatles fan in “Help”, “the same as it was before it was”. However, when I try to run it from a newer Mac (10.15) with the “normal” 3.12.2 distro, or from an even newer Mac ( 12.3, M1/Rosetta2) running the same distro I get a flood of error messages.
Here is how I start up the RPi4:
$ jackd -P75 -dalsa -dhw:2 -r44100 -p1024 -n3 -o8 -P &
$ sclang initServer16.scd
where initServer16.scd is:
o = Server.local.options;
o.numOutputBusChannels = 8;
o.numOutputBusChannels.postln;
s.options.bindAddress = "10.0.1.16";
s.boot;
And here is how I connect from the Mac:
Server.default = s = Server.remote("rpi", NetAddr("10.0.1.16", 57110));
And here is what appears in the Mac post:
ERROR: Message 'protocol' not understood.
RECEIVER:
nil
ARGS:
PATH: /Users/Robert/Common/SuperCollider/jSpace.scd
CALL STACK:
DoesNotUnderstandError:reportError
arg this = <instance of DoesNotUnderstandError>
Nil:handleError
arg this = nil
arg error = <instance of DoesNotUnderstandError>
Thread:handleError
arg this = <instance of Thread>
arg error = <instance of DoesNotUnderstandError>
Object:throw
arg this = <instance of DoesNotUnderstandError>
Object:doesNotUnderstand
arg this = nil
arg selector = 'protocol'
arg args = [*0]
Meta_Server:remote
arg this = <instance of Meta_Server>
arg name = "rpi"
arg addr = <instance of NetAddr>
arg options = nil
arg clientID = nil
var result = <instance of Server>
< closed FunctionDef > (no arguments or variables)
Interpreter:interpretPrintCmdLine
arg this = <instance of Interpreter>
var res = nil
var func = <instance of Function>
var code = "Server.default = s = Server...."
var doc = nil
var ideClass = <instance of Meta_ScIDE>
Process:interpretPrintCmdLine
arg this = <instance of Main>
^^ ERROR: Message 'protocol' not understood.
RECEIVER: nil
Please note that this is my first post here, and I apologize in advance if the formatting does not turn out correctly.