This may not be a bug. Even I faced this error which seems to be related to another error, blueman.bluez.errors.DBusFailedError for which I found the solution here: https://askubuntu.com/questions/801404/bluetooth- connection-failed-blueman-bluez-errors-dbusfailederror-protocol-no.
Hope this may help someone. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1490349 Title: 15:10 and 16.04: bluetoothd "Failed to start discovery: org.bluez.Error.NotReady" after bluetoothd restarted Status in bluez package in Ubuntu: Invalid Bug description: On 15:10 after the bluetooth service has been stopped and restarted it is not possible to scan or connect to devices: $ sudo systemctl restart bluetooth $ bluetoothctl [NEW] Controller 00:1F:3A:E0:0A:AF hephaestion.lan.iam.tj [default] [NEW] Device 00:0A:95:4B:BD:C2 Apple Wireless Keyboard [NEW] Device 00:07:61:3B:86:98 Bluetooth Travel Mouse [bluetooth]# scan on Failed to start discovery: org.bluez.Error.NotReady To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1490349/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp