Solved by Wmog in post #8 
              
              
                Thank you. Effectively, I downgraded to the Linux Kernel 5.8.5 from Arch Linux Archive, I removed nvidia, then I first installed linux-headers-5.8.5, then nvidia-dkms; it is worth noting that linux-headers-5.8.5 must imperatively be installed before nvidia-dkms, otherwise the kernel headers of the L…