You don’t mention which Desktop is being used – KDE Plasma 5 or GNOME?
[HR][/HR]Assuming KDE Plasma 5 (absolutely no idea about GNOME, I’m a KDE user . . . ):
The newest KDE Plasma 5 has a human eye visibility issue, which could affect other Desktops if they are also visually similar.
- When you click on the Network Manage icon in the KDE Plasma 5 System Tray, check top left for an almost indiscernible box:
[LIST] - If it’s not filled in with a colour, click it to fill it with colour and enable the WiFi.
- If it’s filled in with a colour, a click will remove the coloured filling and switch the WiFi off . . .
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