GNU/Linux Mint 20 Realtek rtl8111 Setup Guide
Hi! The linked Tutorial shows you Step-by-Step How to Install Realtek rtl8111 Wireless Driver in Mint 20.x Ulyana/Ulyssa/Uma/Una LTS GNU/Linux Desktop.
And the r8168-dkms Linux Mint Package contains the Binary Firmware for Realtek Ethernet, Wifi and Bluetooth Adapters Supported by Various Drivers.
Especially relevant: this Realtek rtl8111 Driver Linux Mint 20 Dkms Setup should be working also after an Apt Kernel Upgrade also because is part of the Default Repo.
Finally, this Realtek Driver Linux Mint Setup should support All the following PCI Express 10/100/1000M Gigabit Ethernet Adapters:
And again also the PCI Express 10/100M Fast Ethernet Interfaces:
Please be aware of how this Driver is Not supporting all the Linux Kernels range, so in case of issue consult the available Online Documentation.
So as a possible Solution, then you may also see: How to Install New Kernel Guide.
Again, in case of Issue for preventing any possible Driver loading Interference you should also take into account: How to Blacklist Kernel Modules.
GNU/Linux Mint 20 Realtek rtl8111 Driver Installation
So Now I’m truly Happy if this Guide could Help you to Install Realtek RTL8111x Driver on Linux Mint!