Why does disabling WiFi cause shut-down problems?

G

Geert Cuypers

Dell Inspiron 3880 - Shutdown problemsI have been having problems with this computer not shutting down properly. The screen goes black, but the power light stays on and motherboard stays powered up, as evidenced by LED lights on a PCIe card. This is not 'sleep' because once I get stuck there, nothing I do with mouse or keyboard or (brief) power button 'wakes' the system. I have to force power-off by keeping the power button down for 5 seconds, or by pulling the plug and then restart to get it going again. I finally figured out today what causes the problem. I don't normally use WiFi. I use an

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