I'm seeing this as well in 18.10 with an Apple MagicTouch 1 bluetooth connected to an Asus laptop.
It disconnects every few minutes of use and then reconnects after about 30sec.
Oct 28 09:37:39 marconi bluetoothd[979]: Can't get HIDP connection info
Oct 28 09:37:41 marconi kernel: [48771.558941] magicmouse 0005:05AC:030E.000C: unknown main item tag 0x0
Oct 28 09:37:41 marconi kernel: [48771.559239] input: Apple Wireless Trackpad as /devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.000C/input/input33
Oct 28 09:37:41 marconi kernel: [48771.559685] magicmouse 0005:05AC:030E.000C: input,hidraw6: BLUETOOTH HID v1.60 Mouse [Apple Wireless Trackpad] on 44:03:2c:ea:91:00
Oct 28 09:37:41 marconi upowerd[1497]: treating change event as add on /sys/devices/pci0000:00/0000:00:14.0/usb1/1-6/1-6:1.0/bluetooth/hci0/hci0:256/0005:05AC:030E.000C/power_supply/hid-cc:c7:60:f1:9c:a9-battery
I'm seeing this as well in 18.10 with an Apple MagicTouch 1 bluetooth connected to an Asus laptop.
It disconnects every few minutes of use and then reconnects after about 30sec.
Oct 28 09:37:39 marconi bluetoothd[979]: Can't get HIDP connection info 030E.000C: unknown main item tag 0x0 pci0000: 00/0000: 00:14.0/ usb1/1- 6/1-6:1. 0/bluetooth/ hci0/hci0: 256/0005: 05AC:030E. 000C/input/ input33 030E.000C: input,hidraw6: BLUETOOTH HID v1.60 Mouse [Apple Wireless Trackpad] on 44:03:2c:ea:91:00 pci0000: 00/0000: 00:14.0/ usb1/1- 6/1-6:1. 0/bluetooth/ hci0/hci0: 256/0005: 05AC:030E. 000C/power_ supply/ hid-cc: c7:60:f1: 9c:a9-battery
Oct 28 09:37:41 marconi kernel: [48771.558941] magicmouse 0005:05AC:
Oct 28 09:37:41 marconi kernel: [48771.559239] input: Apple Wireless Trackpad as /devices/
Oct 28 09:37:41 marconi kernel: [48771.559685] magicmouse 0005:05AC:
Oct 28 09:37:41 marconi upowerd[1497]: treating change event as add on /sys/devices/