In older kernels running: pa ax |grep irq will show a process for each irq in the form: 548 ? S 0:00 [irq/16-snd_ens1] however, with kernel 5.15 most of these are gone except the one for mei_me. This means that rtirq doesn't work and my device suffers from more xruns than normal. Has anyone else experienced this? -- Len Ovens www.ovenwerks.net