~
towo:Defiant> inxi -SGMI
System: Host: Defiant Kernel: 5.9.1-towo.1-siduction-amd64 x86_64 bits: 64 Desktop: KDE Plasma 5.19.5
Distro: siduction 18.3.0 Patience - kde - (202010061355)
Machine: Type: Desktop System: CSL- & KG product: A0000001 v: N/A serial: <superuser/root required>
Mobo: ASUSTeK model: ROG STRIX B450-F GAMING v: Rev 1.xx serial: <superuser/root required>
UEFI: American Megatrends v: 3103 date: 06/17/2020
Graphics: Device-1: Advanced Micro Devices [AMD/ATI] Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] driver: amdgpu
v: kernel
Display: x11 server: X.Org 1.20.9 driver: amdgpu FAILED: ati unloaded: fbdev,modesetting,vesa
resolution: 1920x1080~60Hz
OpenGL: renderer: Radeon RX 580 Series (POLARIS10 DRM 3.39.0 5.9.1-towo.1-siduction-amd64 LLVM 11.0.0)
v: 4.6 Mesa 20.3.0-devel
Info: Processes: 421 Uptime: 11h 05m Memory: 31.36 GiB used: 1.82 GiB (5.8%) Shell: Bash inxi: 3.1.07
So you see, that kernel is working in general.
Let me oracle, you have a nvidia acard and you are using the blob, then have fun, a new driver, which supports kernel 5.9 or higher wil not be avaialable in the near future.