-w 16 or -w 8, it is to be a power of 2
It also doesn't work with vega, blockchain drivers.
Getting
[17:54:20] Started sgminer v5.2.0
[17:54:20] * using Jansson 2.7
1: Advanced Micro Devices, Inc.
1: Advanced Micro Devices, Inc.
1: Advanced Micro Devices, Inc.
And complete silence after this. No errors, no hashrate on the pool, nothing.