OP
luizfernandorg
Member
Desktop Ubuntu is NetworkManager, set to use CloudFlare DNS and Google DNS, I changed from Debian to Ubuntu, and now even the Wifi works, I use a Wi-Fi adapter for 5G, and Ubuntu recognizes it.Next time you get this problem check status of your DNS client, it's possible that the client service is in error state.
Which DNS client do you use? how is your DNS configured? is it in desktop GUI ex. NetworkManger or custom DNS client like unbound?