I mentioned in a previous email that I've switched to Pipewire on my laptop. It works fine with most things - I use Audacious to play CDs, and Firefox seems happy enough to play things from You-Tube or BBC. However, when I try to run GrandOrgue I get confusing messages, saying: Error: No sound output will happen. Samples per buffer has been changed by the sound driver to 512. Under jack, I had been running at 44100sps, with 2 buffers of 1024 samples. QJackCtl shows this as still being in force, though whether this is what pipewire is actually doing I don't know. Changing setting in QJackCtl to 512 spb gives a message which suggests that pipewire is still expecting 1024. Bill -- +----------------------------------------+ | Bill Purvis | | email: bill(a)billp.org | +----------------------------------------+