On my old VAIO, vintage 2007, ran Linux Mint 18.1 Cinnamon 32 Bit, the laptop was connected via WLAN (Fritzbox) to the Internet. Everything went smoothly. For a few days I have no internet connection anymore. My router was no longer displayed, and when clicking on the network icon appeared u.a. The message: WLAN not available. Two events preceded this: 1. An ordinary security update and 2. The connection of an external DVD drive. No idea if the current problem has anything to do with it.
I have now Linux Mint 19.1 Mate 64 Bit installed, but the problem could not be solved even with the new OS.
Does anyone know advice?
Maybe something turns off the Wi-Fi?
Had there, for example A problem with the smartphone. All naslang was, for no apparent reason, the wireless disabled, so properly turned off. Energy saving mode was off.
The reason was the file manager. Yesterday I finished and deactivated. Now the WLAN is permanently available.
Since I would have to turn everything now and then to see if the Wi-Fi is back. However, since the problem occurs with two different operating systems, I consider this explanation rather unlikely.
Test with mobile phone and Live Linux.
Some laptops have a Wi-Fi switch, maybe you accidentally turned it off.
That was something I was. My laptop has an on / off switch for wireless, as I learned from another user, and I probably accidentally pressed that when connecting an external DVD drive.
