AMD cpu error

[Ilya Kuznetsov]

It seems that there is a problem with new (and maybe not only new) AMD processors.

I upgraded my main computer from i7 6700 to ryzen 7700.

And my system began to reboot when I restarted the Jack server. The problem lies in the incorrect operation of amd_iommu. I don’t know whose side the problem is on (AMD or linux), but disabling iommu in the BIOS solved the problem, now FFADO + JACK works stably.

Perhaps this will help someone.

upd.

After updating the amd firmware, another problem appeared: FFADO did not start without IOMMU enabled. And with IOMMU enabled, the system was also not stable.

Adding iommu=pt to the kernel parameter helped solve the problem.