macOS High Sierra

Bluetooth turns off spontaneously on old 2011 Mac High Sierra on awakening

In past couple weeks, whenever Mac awakens from sleep or lock screen, bluetooth turns off spontaneously. Since mouse does not work, I have to plug keyboard in to lightning cable and use Siri voice command to turn on bluetooth.

Only new thing is I installed a handheld scanner/mouse that uses wifi, not bluetooth. Thus I can also get the scanner mouse out of the drawer, switch it on, and use it to restart bluetooth.

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