Bluetooth shows disabled even when switched on. Mouse can't connect (Ubuntu 16.04 LTS)

I've recently installed ubuntu 16.04 LTS twice -and i discovered that the problem was from the tool katoolin so i didn't install it- after i installed ubuntu the bluetooth didn't work for me.

P.S:the bluetooth was working when my laptop was ubuntu 15.04

when i turn bluetooth on to connect my mouse the switch was on but it said that

    Bluetooth is disabled

i entered the command

    sudo rfkill unblock bluetooth

it worked but didn't connect to the mouse even after the next restart
i also tried to editing the file /etc/rc.local (putting sudo rfkill unblock bluetooth before last line and restarting)

and i've tried **sudo hciconfig hci0 reset** with output

> Can't init device hci0: Connection timed out (110)

my lsusb; rfkill list output:

    Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
    Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 001 Device 004: ID 1bcf:2883 Sunplus Innovation Technology Inc.
    Bus 001 Device 014: ID 04ca:3005 Lite-On Technology Corp.
    Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
    Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
    Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
    Bus 003 Device 002: ID 04d9:1503 Holtek Semiconductor, Inc. Keyboard
    Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

    0: asus-wlan: Wireless LAN
      Soft blocked: no
      Hard blocked: no
     1: asus-bluetooth: Bluetooth
      Soft blocked: no
      Hard blocked: no
     11: hci0: Bluetooth
      Soft blocked: no
     Hard blocked: no

and output of **dmesg | grep -Ei 'ath3k|blue'**

    [ 1.727681] usb 1-1.1: Product: Bluetooth USB Host Controller
    [ 34.157120] Bluetooth: Core ver 2.21
    [ 34.157135] Bluetooth: HCI device and connection manager initialized
    [ 34.157138] Bluetooth: HCI socket layer initialized
    [ 34.157140] Bluetooth: L2CAP socket layer initialized
    [ 34.157145] Bluetooth: SCO socket layer initialized
    [ 35.604410] usbcore: registered new interface driver ath3k
    [ 51.744300] usb 1-1.1: Product: Bluetooth USB Host Controller
    [ 53.810045] Bluetooth: hci0 command 0x0c25 tx timeout
    [ 55.814079] Bluetooth: hci0 command 0x0c38 tx timeout
    [ 57.818111] Bluetooth: hci0 command 0x0c39 tx timeout
    [ 59.822149] Bluetooth: hci0 command 0x0c05 tx timeout
    [ 66.997548] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
    [ 66.997552] Bluetooth: BNEP filters: protocol multicast
    [ 66.997556] Bluetooth: BNEP socket layer initialized
    [ 195.105902] usb 1-1.1: Product: Bluetooth USB Host Controller
    [ 195.328480] Bluetooth: RFCOMM TTY layer initialized
    [ 195.328488] Bluetooth: RFCOMM socket layer initialized
    [ 195.328495] Bluetooth: RFCOMM ver 1.11
    [ 199.131870] Bluetooth: hci0 command 0x1009 tx timeout
    [ 276.169130] usb 1-1.1: Product: Bluetooth USB Host Controller
    [ 294.258992] Bluetooth: hci0 command 0x1005 tx timeout
    [ 296.263065] Bluetooth: hci0 command 0x0c23 tx timeout
    [ 298.267076] Bluetooth: hci0 command 0x0c14 tx timeout
    [ 306.361529] usb 1-1.1: Product: Bluetooth USB Host Controller
    [ 346.417970] Bluetooth: hci0 command 0x0c56 tx timeout
    [ 348.421916] Bluetooth: hci0 command 0x0c45 tx timeout
    [ 350.425782] Bluetooth: hci0 command 0x0c58 tx timeout
    [ 352.429744] Bluetooth: hci0 command 0x1004 tx timeout
    [ 366.099802] usb 1-1.1: Product: Bluetooth USB Host Controller
    [ 368.145218] Bluetooth: hci0 command 0x1001 tx timeout
    [ 370.149130] Bluetooth: hci0 command 0x1009 tx timeout
    [ 410.346611] usb 1-1.1: Product: Bluetooth USB Host Controller
    [ 421.612041] Bluetooth: hci0 command 0x0c23 tx timeout
    [ 423.616060] Bluetooth: hci0 command 0x0c14 tx timeout
    [ 425.620018] Bluetooth: hci0 command 0x0c25 tx timeout
    [ 427.623984] Bluetooth: hci0 command 0x0c38 tx timeout
    [ 442.650168] usb 1-1.1: Product: Bluetooth USB Host Controller
    [ 444.727752] Bluetooth: hci0 command 0x0c52 tx timeout
    [ 446.731800] Bluetooth: hci0 command 0x0c45 tx timeout
    [ 448.735743] Bluetooth: hci0 command 0x0c58 tx timeout
    [ 450.739762] Bluetooth: hci0 command 0x1004 tx timeout
    [ 4000.639722] usb 1-1.1: Product: Bluetooth USB Host Controller
    [ 4011.801141] Bluetooth: hci0 command 0x2002 tx timeout
    [ 4013.805106] Bluetooth: hci0 command 0x2003 tx timeout
    [ 4015.809139] Bluetooth: hci0 command 0x201c tx timeout
    [ 4017.813098] Bluetooth: hci0 command 0x1002 tx timeout
    [ 4019.817109] Bluetooth: hci0 command tx timeout
    [ 4031.611130] usb 1-1.1: Product: Bluetooth USB Host Controller
    [ 4073.072544] Bluetooth: hci0 command 0x0c39 tx timeout
    [ 4075.076588] Bluetooth: hci0 command 0x0c05 tx timeout
    [ 4077.080593] Bluetooth: hci0 command 0x0c16 tx timeout
    [ 4079.084502] Bluetooth: hci0 command 0x2002 tx timeout
    [ 4081.088484] Bluetooth: hci0 command tx timeout

I also installed blueman but useless

I would really appreciate any solution

P.S : IT SOMETIMES WORKED FOR ME AFTER TURNING BLUTOOTH ON/OFF AND ENTERING sudo rfkill unblock bluetooth
 A LOT OF TIMES

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: bluez 5.37-0ubuntu5
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Jul 28 15:52:04 2016
InstallationDate: Installed on 2016-07-25 (2 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
InterestingModules: rfcomm bnep btusb bluetooth
MachineType: ASUSTeK COMPUTER INC. K55A
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic root=UUID=f8070b43-74be-49c3-83b1-e6f231837e9d ro quiet splash vt.handoff=7
SourcePackage: bluez
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/25/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: K55A.407
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: K55A
dmi.board.vendor: ASUSTeK COMPUTER INC.
dmi.board.version: 1.0
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK COMPUTER INC.
dmi.chassis.version: 1.0
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrK55A.407:bd12/25/2012:svnASUSTeKCOMPUTERINC.:pnK55A:pvr1.0:rvnASUSTeKCOMPUTERINC.:rnK55A:rvr1.0:cvnASUSTeKCOMPUTERINC.:ct10:cvr1.0:
dmi.product.name: K55A
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK COMPUTER INC.
hciconfig:
 hci0: Type: BR/EDR Bus: USB
  BD Address: 74:E5:43:69:3A:09 ACL MTU: 1022:8 SCO MTU: 183:5
  DOWN
  RX bytes:917 acl:0 sco:0 events:40 errors:0
  TX bytes:399 acl:0 sco:0 commands:46 errors:6