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[sfl <1442896@xxxxxxxxxxxxxxxxxx>]

I can confirm this is also a problem in Vivid. I'm not using the same
mouse but symptoms are pretty much the same(except the BT icon doesn't
always disappear) . I've updated the kernel to 3.19.2 (for other reasons
- HDMI audio was broken) but that didn't help the bluetooth issue (I'm
assuming it's a bluez problem rather than the kernel itself). Happy to
help troubleshoot if someone can guide trough the relevant processes to
monitor.

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https://bugs.launchpad.net/bugs/1442896

Title:
  Bluetooth mouse disconnects and reconnects every few seconds

Status in bluez package in Ubuntu:
  Confirmed

Bug description:
  I have a bluetooth mouse (Genius Traveller 9005BT) that I have been
  using without problems with Ubuntu for over a year. Since a few weeks
  ago, however, it started disconnecting and reconnected from the
  computer. The symptoms are like this:

  1. The mouse works, and the bluetooth icon on the computer is visible (in gnome-shell's top bar)
  2. The mouse stops working, but the bluetooth icon is still visible. This state lasts between 1 and 10 seconds.
  3. The bluetooth icon vanishes. This can last for half a second if I keep trying to use the mouse, to forever I I leave the mouse alone
  4. The bluetooth icon reappears and the mouse starts working again. This state last from 2-3 seconds if I don't move the mouse, to seemingly forever if I continuously move the mouse

  This seems to occur only after a suspend/resume cycle, and rebooting
  the computer fixes the issue.

  The only thing I see in syslog is this when the mouse reconnects:
  Apr 11 10:03:10 tadzim3 kernel: [52026.494469] hid-generic 0005:0458:0139.002F: unknown main item tag 0x0
  Apr 11 10:03:10 tadzim3 kernel: [52026.494540] input: Traveler 9005BT as /devices/pci0000:00/0000:00:14.0/usb2/2-4/2-4:1.0/bluetooth/hci0/hci0:512/0005:0458:0139.002F/input/input59
  Apr 11 10:03:10 tadzim3 kernel: [52026.494899] hid-generic 0005:0458:0139.002F: input,hidraw3: BLUETOOTH HID v3.12 Mouse [Traveler 9005BT] on e8:2a:ea:8b:a5:5f

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: bluetooth (not installed)
  ProcVersionSignature: Ubuntu 3.16.0-34.45-generic 3.16.7-ckt8
  Uname: Linux 3.16.0-34-generic x86_64
  ApportVersion: 2.14.7-0ubuntu8.2
  Architecture: amd64
  CurrentDesktop: GNOME
  Date: Sat Apr 11 09:49:37 2015
  InstallationDate: Installed on 2015-01-23 (77 days ago)
  InstallationMedia: Ubuntu-GNOME 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  InterestingModules: bnep rfcomm btusb bluetooth
  MachineType: LENOVO 20266
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-34-generic.efi.signed root=UUID=eecad38d-4fff-462c-92bc-357fa12e5515 ro quiet splash vt.handoff=7
  SourcePackage: bluez
  UpgradeStatus: Upgraded to utopic on 2015-01-31 (69 days ago)
  dmi.bios.date: 03/25/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 76CN35WW
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Yoga2
  dmi.board.vendor: LENOVO
  dmi.board.version: 31900058STD
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo Yoga 2 Pro
  dmi.modalias: dmi:bvnLENOVO:bvr76CN35WW:bd03/25/2014:svnLENOVO:pn20266:pvrLenovoYoga2Pro:rvnLENOVO:rnYoga2:rvr31900058STD:cvnLENOVO:ct10:cvrLenovoYoga2Pro:
  dmi.product.name: 20266
  dmi.product.version: Lenovo Yoga 2 Pro
  dmi.sys.vendor: LENOVO
  hciconfig:
   hci0:	Type: BR/EDR  Bus: USB
   	BD Address: E8:2A:EA:8B:A5:5F  ACL MTU: 1021:5  SCO MTU: 96:5
   	UP RUNNING PSCAN 
   	RX bytes:1873821 acl:123158 sco:0 events:2377 errors:0
   	TX bytes:29044 acl:238 sco:0 commands:218 errors:0

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