[LAU] Scarlett 3rd gen glitches (again) + Raspi 4

Hi list,

I have a Focusrite Scarlett 3rd Gen interface that is producing audio
glitches with a Raspberry Pi 4 running a realtime kernel (or not). I had
similar problems on a laptop and on a desktop. On the laptop however it
now runs perfectly with the very latest Linux Mint and the standard
kernel. On my desktop I get acceptable results with AV Linux although
haven't tried it with the latest Mint. There are no error messages
reported or overruns, just glitches which are independent of buffer
sizes and sample rates.

The kernel installation procedure that I used for the Pi 4 is here:

https://lemariva.com/blog/2019/09/raspberry-pi-4b-preempt-rt-kernel-419y-performance-test

and the actual kernel that I built is: 4.19.71-rt24-v7l+

Can suggest some things to try?

Thanks a lot.

Iain
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Received on Sun Jul 19 04:15:01 2020