Hi, I was lucky to get the hands on a mini-ITX containing a "AMD Ryzen 5 3400G with Radeon Vega Graphics".
FreeBSD-13 installed just fine and 4K HDMI output works too with AMDGPU. However I noticed some problems with a webcamd DVB-T receiver, that it had lots of dropouts I couldn't understand. When I looked closer at this it turns out that something was blocking the threads for longer amounts of time, up to 100 ms at random. After some debugging I eventually found:
sysctl machdep.idle machdep.idle: acpi machdep.idle_available: spin, mwait, hlt, acpi And when I set it to: sysctl machdep.idle=spin The problems I saw vanished. Anyone else having such experiences with Ryzen? --HPS
