A few interesting fixes that touch vega20_hwmgr.c have rolled in from drm-fixes: The first is likely the most interesting for our issues, as it touches min/maxes (tho only the soft ones it seems). The other two are related to SMU versions. https://github.com/torvalds/linux/commit/83e09d5bddbee749fc83063890244397896a1971 https://github.com/torvalds/linux/commit/21649c0b6b7899f4fa3099c46d3d027f60b107ec https://github.com/torvalds/linux/commit/23b7f6c41d4717b1638eca47e09d7e99fc7b9fd9 I haven't tested them out yet, but it does give me some hope that someone is still looking at Vega 20/Radeon VII . . .