Ubuntu 20.04 using llvmpipe rather than Nvidia Driver on AMD ryzen 7

I’m currently having issues with getting my Ubuntu system to properly using Nvidia instead of the llvmpipe. Details below:

GPU: GeForce RTX 3070 notebook
Nvidia Driver Version: 470
OS: Ubuntu 18.04
CPU: AMD Ryzen 7

I have install the nvidia driver but llvmpipe (LLVM 10.0.0, 128 bits) is still appearing on my system.

FYI, my friends that are using Intel CPU solved this problem by just installing the nvidia driver and it worked immediately.

nvidia-bug-report.log.gz (456.6 KB)

The nvidia driver is loading fine.
But your OS is too old to support your new hardware.
Either you update to a newer Ubuntu version (can’t tell you which exactly).
Or if you need to stay with 18.04, update the kernel using the liquorix ppa:
and update your firmware files:

I have try update kernel using the liquorix ppa, and it hangs on boot. do you have any idea?

Please create a new nvidia-bug-report.log from recovery mode, if possible.