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I am trying to pair a Bluetooth module (RN-41 serial port) to my Ubuntu machine using the provided GUI in System Settings. I've successfully paired using the console but for whatever reason I cannot do this through the GUI as dumb as that seems. Here is what I can select from using the GUI for Pin Options:

Missing option screen shot

While I've found a previous answer with the complete set of options:

Complete option screen shot

The whole reason I even care about this is because I have a device with a fixed pin of 1234 and because my only option under Fixed Pin is "Do Not Pair"... well I really have no options then. Anyway, suggestions would be greatly appreciated.

Please see comment below for bug report link because at the time of writing I do not have enough rep to add another link

ejohnso49
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1 Answers1

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You shouldn't need to do anything with PIN options in 16.04 as it should figure the PIN out on its own for a mouse. It worked like that for me when pairing my Logitech travel mouse

You could edit /usr/share/gnome-bluetooth/pin-code-database.xml and add a line as a work around

<device oui="00:1B:C1:" name="HOLUX_M-241" pin="0000"/>

Change the 00:1B:C1 to match the first part of your devices MAC address. Change HOLUX_M-241 to match your devices name and do the same for the pin. Make the line match the others indentation, save and reboot

Jeremy31
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  • Unfortunately this isn't for a mouse, it's for a RN41 Bluetooth module which has a serial port profile by default. I'll update that part of the question. I'm more asking if anyone has seen a bug in the system settings like this before and if there's a way to fix it. – ejohnso49 Aug 18 '17 at 17:28
  • It should work for anything with a fixed pin, headphones, mouse, portable speakers – Jeremy31 Aug 18 '17 at 19:20
  • My problem is that my system GUI is only showing 2 options in the top picture: Automatic PIN or Do Not Pair. Obviously Do Not Pair is not what I would want because I'm trying to pair the device and Automatic selects a random PIN which causes the pair to fail because the device uses a fixed one.

    Like I said, I'm able to pair and connect to devices with fixed pins through the command line and posted this to see if anyone has run into this problem with the system GUI.

     – ejohnso49 Aug 18 '17 at 23:29
  • File a bug report against package gnome-bluetooth for not being able to use a custom PIN – Jeremy31 Aug 19 '17 at 11:40
  • The Gnome bug you found isn't relevant as that user could enter the PIN, you need to file a bug with Ubuntu at launchpad as Ubuntu has been known to make some custom patches – Jeremy31 Aug 19 '17 at 21:39
  • This workaround doesn't quite fix everything for me. The system still wants to use a random pin sometimes. Here's the link for the appropriate bug report for future use: https://bugs.launchpad.net/ubuntu/+source/gnome-bluetooth/+bug/551950 – ejohnso49 Aug 23 '17 at 06:03