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  BT mouse getting reset during operation

Status in Linux:
Status in linux package in Ubuntu:

Bug description:
  (note: It's unclear to me if that's a kernel regression or an issue with 

  I've been using this particular combination of Bluetooth mouse ("TECKNET 
BM306") & laptop ("Dell Latitude E7240") for over a year now.

  It used to work with 18.04 and 17.10, but with 18.10 I'm encountering
  a strange disconnect behaviour:

  1) Mouse is working ok
  2) Mouse suddenly stops
  3) Disabling and enabling bluetooth on the laptop makes the mouse work again.

  when this happens, dmesg reports:

  [57812.977570] usb 1-1.3: reset full-speed USB device number 18 using

  Disabling bluetooth and enabling it again results in:

  [57833.455866] usb 1-1.3: USB disconnect, device number 18
  [57833.455948] Bluetooth: hci0: turning off Intel device LED failed (-19)
  [57836.905656] usb 1-1.3: new full-speed USB device number 19 using ehci-pci
  [57837.016248] usb 1-1.3: New USB device found, idVendor=8087, 
idProduct=07dc, bcdDevice= 0.01
  [57837.016253] usb 1-1.3: New USB device strings: Mfr=0, Product=0, 
  [57837.030092] Bluetooth: hci0: read Intel version: 370710018002030d00
  [57837.030169] Bluetooth: hci0: Intel Bluetooth firmware file: 
  [57837.251206] Bluetooth: hci0: Intel firmware patch completed and activated
  [57841.724368] hid-generic 0005:0A5C:0001.001F: unknown main item tag 0x0
  [57841.724587] input: TECKNET BM306 Mouse as 
  [57841.724873] hid-generic 0005:0A5C:0001.001F: input,hidraw0: BLUETOOTH HID 
v1.29 Mouse [TECKNET BM306] on fc:f8:ae:45:3c:05

  $ bluetoothctl --version
  bluetoothctl: 5.50

  $ hciconfig -a
  hci0: Type: Primary  Bus: USB
        BD Address: FC:F8:AE:45:3C:05  ACL MTU: 1021:5  SCO MTU: 96:5
        RX bytes:52465 acl:3355 sco:0 events:222 errors:0
        TX bytes:28384 acl:13 sco:0 commands:170 errors:0
        Features: 0xff 0xfe 0x0f 0xfe 0xdb 0xff 0x7b 0x87
        Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 
        Link policy: RSWITCH HOLD SNIFF 
        Link mode: SLAVE ACCEPT 
        Name: 'ChromeLinux_AA14'
        Class: 0x0c010c
        Service Classes: Rendering, Capturing
        Device Class: Computer, Laptop
        HCI Version: 4.0 (0x6)  Revision: 0x500
        LMP Version: 4.0 (0x6)  Subversion: 0x500
        Manufacturer: Intel Corp. (2)

  $ bluetoothctl
  Agent registered
  [TECKNET BM306]# show
  Controller FC:F8:AE:45:3C:05 (public)
        Name: humbaba
        Alias: ChromeLinux_AA14
        Class: 0x000c010c
        Powered: yes
        Discoverable: no
        Pairable: yes
        UUID: Headset AG                (00001112-0000-1000-8000-00805f9b34fb)
        UUID: Generic Attribute Profile (00001801-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control        (0000110e-0000-1000-8000-00805f9b34fb)
        UUID: Generic Access Profile    (00001800-0000-1000-8000-00805f9b34fb)
        UUID: PnP Information           (00001200-0000-1000-8000-00805f9b34fb)
        UUID: A/V Remote Control Target (0000110c-0000-1000-8000-00805f9b34fb)
        UUID: Audio Source              (0000110a-0000-1000-8000-00805f9b34fb)
        UUID: Audio Sink                (0000110b-0000-1000-8000-00805f9b34fb)
        UUID: Headset                   (00001108-0000-1000-8000-00805f9b34fb)
        Modalias: usb:v1D6Bp0246d0532
        Discovering: no
  [TECKNET BM306]# devices
  Device 20:9B:A5:68:AE:67 SoundBuds Flow
  Device DC:2C:26:01:24:23 TECKNET BM306
  Device 88:71:E5:0E:6B:99 Echo-HPT
  Device 00:0B:E4:A0:A2:14 Nokia BH-103
  Device A8:96:75:8B:4F:49 Moto G5S Plus
  Device 00:02:5B:20:75:3C Trust SPK-02
  Device 88:75:98:F2:5C:9E NS9+
  Device 00:E0:4C:D5:E0:F5 SoundCore mini
  [TECKNET BM306]# info DC:2C:26:01:24:23
  Device DC:2C:26:01:24:23 (public)
        Name: TECKNET BM306
        Alias: TECKNET BM306
        Class: 0x00000580
        Icon: input-mouse
        Paired: yes
        Trusted: yes
        Blocked: no
        Connected: yes
        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:v0A5Cp0001d0129

  $ rfkill list
  2: dell-wifi: Wireless LAN
        Soft blocked: no
        Hard blocked: no
  3: dell-bluetooth: Bluetooth
        Soft blocked: no
        Hard blocked: no
  4: dell-wwan: Wireless WAN
        Soft blocked: yes
        Hard blocked: no
  5: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no
  46: nfc0: NFC
        Soft blocked: no
        Hard blocked: no
  48: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no

  ProblemType: Bug
  DistroRelease: Ubuntu 18.10
  Package: bluez 5.50-0ubuntu1
  ProcVersionSignature: Ubuntu 4.18.0-7.8-generic 4.18.5
  Uname: Linux 4.18.0-7-generic x86_64
  NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
  ApportVersion: 2.20.10-0ubuntu11
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sun Oct  7 12:05:36 2018
  InstallationDate: Installed on 2014-02-07 (1702 days ago)
  InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 
  InterestingModules: rfcomm bnep btusb bluetooth
  MachineType: Dell Inc. Latitude E7240
   PATH=(custom, no user)
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-7-generic 
root=UUID=052bd6e1-db02-4bca-9f9c-d5600c0237e1 ro quiet splash vt.handoff=1
  SourcePackage: bluez
  UpgradeStatus: Upgraded to cosmic on 2018-09-29 (7 days ago) 02/01/2018
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A25
  dmi.board.asset.tag: humbaba 0531FD
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.asset.tag: humbaba
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
dmi:bvnDellInc.:bvrA25:bd02/01/2018:svnDellInc.:pnLatitudeE7240:pvr00:rvnDellInc.:rn0531FD:rvrA00:cvnDellInc.:ct9:cvr: Latitude E7240
  dmi.product.sku: 05CA
  dmi.product.version: 00
  dmi.sys.vendor: Dell Inc.
   hci0:        Type: Primary  Bus: USB
        BD Address: FC:F8:AE:45:3C:05  ACL MTU: 1021:5  SCO MTU: 96:5
        RX bytes:126931 acl:8217 sco:0 events:414 errors:0
        TX bytes:28384 acl:13 sco:0 commands:170 errors:0

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