Ubuntu MATE 20.04 with RTX 3070 on Ryzen 5900 - black screen after boot

@generix
OK, looks like that worked. The OS says that now it uses “GeForce RTX 3070 Laptop GPU/PCIe/SSE2”

Here is the output of the above commands:

$ sudo dpkg -l |grep nvidia-prime
ii  nvidia-prime                                0.8.15.3~0.20.04.1                    all          Tools to enable NVIDIA's Prime
$ sudo dpkg -l |grep ubuntu-drivers-common
ii  ubuntu-drivers-common                       1:0.8.6.5~0.20.04.1                   amd64        Detect and install additional Ubuntu driver packages