Thanks to one and all.
I installed a new operating system on the pc without resolving this issue so I can't give any more updates.
Thanks to one and all.
I installed a new operating system on the pc without resolving this issue so I can't give any more updates.
I installed a new operating system on the pc in question without solving this problem.
I created an audio group using the: sudo adduser [pc name] audio command
My audio interface is an Mbox 2