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I have two systems with AMD GPUs: a desktop with a 2015 R9 Nano and a 2018 Thinkpad with a Ryzen APU. The amdgpu driver works perfectly on both of them. The Ryz
by majewsky 8y ago
I have two systems with AMD GPUs: a desktop with a 2015 R9 Nano and a 2018 Thinkpad with a Ryzen APU. The amdgpu driver works perfectly on both of them. The Ryzen APU has one issue where you need to set `iommu=soft` in the kernel parameters to get it to boot, but that seems to be more related to the CPU than the GPU.
- chupasaurus 8y agoI don't have that parameter set, everything works fine. Ryzen 2400G.
- majewsky 8y agoMaybe it's got to do with the chipset? Not sure, I don't have any other Ryzens to compare against. But `iommu=soft` is strictly required on my system, otherwise the screen just stays black after the boot manager.