@bjo81 : I'm using AMD Radeon RX 5600 XT (NAVI10 DRM 3.38.0 5.8.9-050809-generic LLVM 10.0.1) v: 4.6 Mesa 20.3.0-devel (git-a3543ad 2020-09-26 focal-oibaf-ppa) and I still have issue. It's worst, no stairs but whole display broken. I will post a screencast video soon
@bjo81 : I'm using AMD Radeon RX 5600 XT (NAVI10 DRM 3.38.0 5.8.9-050809- generic LLVM 10.0.1) v: 4.6 Mesa 20.3.0-devel (git-a3543ad 2020-09-26 focal-oibaf-ppa) and I still have issue. It's worst, no stairs but whole display broken. I will post a screencast video soon