I am running Mint 20. When I originally installed it I was running a USB wifi adapter. I have since switched to an Ethernet connection and removed the wifi adapter. Now, whenever I start my browser after it has timed out, it spends 30 seconds looking for the wifi adapter and will finally find the ethernet connection and start up. I have made sure to remove all wifi options from the bios and the "edit connections" in the control panel. I'm getting ready to reinstall mint just to cure this problem. I'm sure there is a setting somewhere that I am missing. If I only knew where it was. Thank you