Sorry, in addition to my previous comment, JACK is not crashing, just disconnecting Ardour. Here is the output from a terminal running jackd when I mute a track:
subgraph starting at ardour timed out (subgraph_wait_fd=9, status = 0, state = Running, pollret = 0 revents = 0x0)
bad status (1) for client ardour handling event (type = 5)
Sorry, in addition to my previous comment, JACK is not crashing, just disconnecting Ardour. Here is the output from a terminal running jackd when I mute a track:
subgraph starting at ardour timed out (subgraph_ wait_fd= 9, status = 0, state = Running, pollret = 0 revents = 0x0)
bad status (1) for client ardour handling event (type = 5)