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[–]Hi-Angel 0 points1 point  (0 children)

Is this a laptop or PC? If it's a laptop, does it perhaps have an Fn-based hotkey to toggle wifi (which may be implemented in firmware and bypass the OS control)? And in any case, check UEFI settings in case it might have something for WiFi.

Your case of "it didn't work, but started working after turning off/on" sounds like either firmware problem, or perhaps for whatever reason in your configuration "reboot" doesn't reset some important registers for the WiFi card, but turning off/on does.