Comment 64 for bug 191704

He did not make one thing clear that is easy to overlook. You follow the directions and find that in the services tab that Input Service has already been checked and you see nothing below but,when you uncheck the box and then recheck the box it activates the pairing. Before I did this though I went into /etc/default/bluetooth and "Set the variable HIDD_ENABLED=1". I am not sue if it helped or not but, I do have my mouse back. SEE BELOW

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on the Bluetooth applet and choose Preferences.
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Under "Mode of operation" choose "Visible and connectable for other devices"
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Change to the Services tab, there will be a list of Available services. On that list, click once on Input service.
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Put your input device in "pair" or "connect" mode. This is usually done with a physical button on or under the device.
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In the Input Devices section, click "Add". A new window will appear with the input devices visible (in this example, a mouse).