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AMD® Ryzen 7 2700u with Ubuntu 18.04  has a graphic problem

Question asked by jovanovic_dragan on Aug 30, 2019
Latest reply on Aug 6, 2020 by fsanchez

I have  a AMD® Ryzen 7 2700u with radeon vega mobile gfx × 8 Lenovo laptop with Ubuntu 18.04. The graphics card is only partially supported. In the log I have the following error. AMD-Vi: Unable to write to IOMMU perf counter.what can I do?