driver: N/A
No cigar I guess.
You could try with an older kernel which support driver 340.
sudo apt remove --purge *nvidia*
sudo apt-get install nvidia-driver-340
sudo apt install linux-image-5.4.0-109-generic linux-headers-5.4.0-109-generic
Then you need to: [HOW TO] set an older kernel to default boot
and select kernel 5.4.0