hello,
I have a Samsung S Action Mouse ET-MP900D that I'm trying to connect from my laptop: Asus U36SD with Fedora 23.

I can pair and connect to the mouse both from a Samsung S2 phone and from a Samsung Pro 12.2 tablet.

I remember in the past on the same PC with Fedora 21 I was able to connect to this mouse.

But now on fedora 23 I get:

[root@ope46 ~]# bluetoothctl 
[NEW] Controller 74:2F:68:83:D4:3F ChromeLinux_D1F5 [default]
[NEW] Device E4:B0:21:98:DB:CA GT-I9100
[NEW] Device F0:65:DD:80:A3:0E Samsung S Action Mouse ET-MP900D
[bluetooth]# 

[bluetooth]# info F0:65:DD:80:A3:0E
Device F0:65:DD:80:A3:0E
Name: Samsung S Action Mouse ET-MP900D
Alias: Samsung S Action Mouse ET-MP900D
Class: 0x002580
Icon: input-mouse
Paired: yes
Trusted: yes
Blocked: no
Connected: no
LegacyPairing: no
UUID: Service Discovery Serve.. (00001000-0000-1000-8000-00805f9b34fb)
UUID: Human Interface Device... (00001124-0000-1000-8000-00805f9b34fb)
UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
Modalias: usb:v04E8pA004d0216
[bluetooth]# 

But

[bluetooth]# connect F0:65:DD:80:A3:0E
Attempting to connect to F0:65:DD:80:A3:0E
Failed to connect: org.bluez.Error.Failed
[bluetooth]# 

[root@ope46 ~]# systemctl status bluetooth -l
● bluetooth.service - Bluetooth service
   Loaded: loaded (/usr/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
   Active: active (running) since Thu 2016-05-26 12:43:46 CEST; 20min ago
     Docs: man:bluetoothd(8)
 Main PID: 789 (bluetoothd)
   Status: "Running"
   CGroup: /system.slice/bluetooth.service
           └─789 /usr/libexec/bluetooth/bluetoothd

May 26 12:44:37 ope46 bluetoothd[789]: Can't get HIDP connection info
May 26 12:44:37 ope46 bluetoothd[789]: connect error: Connection refused (111)
May 26 12:44:57 ope46 bluetoothd[789]: Can't get HIDP connection info
May 26 12:44:57 ope46 bluetoothd[789]: connect error: Connection refused (111)
May 26 12:58:41 ope46 bluetoothd[789]: Can't get HIDP connection info
May 26 12:58:46 ope46 bluetoothd[789]: connect error: Host is down (112)
May 26 12:59:26 ope46 bluetoothd[789]: Can't get HIDP connection info
May 26 12:59:31 ope46 bluetoothd[789]: connect error: Host is down (112)
May 26 13:03:07 ope46 bluetoothd[789]: Can't get HIDP connection info
May 26 13:03:12 ope46 bluetoothd[789]: connect error: Host is down (112)

Tried also from mate and from kde sessio s with same results.

Device added successfully, but failed to connect

Connection Failed: blueman.bluez.errors.DBusFailedError: Input/output error

I also found some reference to create file /etc/sysconfig/bluetooth and include 

HID2HCI_ENABLE=true

But after done and reboot same behavior.

How to debug further?

Thanks in advance.

Gianluca