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[Bug 1548317] Re: kernel: [some.number] Bluetooth: hci0 ACL packet for unknown connection handle ##


Fredrik Jacobsson, thank you for reporting this and helping make Ubuntu

As per http://support.lenovo.com/us/en/products/Laptops-and-
Lenovo?linkTrack=GPS:Body_Search%20Products&beta=false an update to your
computer's buggy, insecure, and outdated BIOS is available (38). If you
update to this following https://help.ubuntu.com/community/BIOSUpdate
does it change anything?

For more on BIOS updates and linux, please see

Please note your current BIOS is already in the Bug Description, so
posting this on the old BIOS would not be helpful.

Also, you don't have to create a new bug report.

Once the BIOS is updated, if the problem is still reproducible:
1) Please provide the output of the following terminal command (not perform an apport-collect):
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date
2) Please make a comment specifically advising on if there was an improvement or not.
3) Please mark this report Status Confirmed.

If it's not reproducible, please mark this as Invalid.

Thank you for your understanding.

** Tags added: bios-outdated-a2cn25ww

** Changed in: linux (Ubuntu)
   Importance: Medium => Low

** Changed in: linux (Ubuntu)
       Status: Confirmed => Incomplete

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  kernel: [some.number] Bluetooth: hci0 ACL packet for unknown
  connection handle ##

Status in linux package in Ubuntu:

Bug description:
  Bluetooth receiver doesn't connect with kernel after sleep/boot-up. The receiver is awake because "kernel: [339132.269449] Bluetooth: hci0 ACL packet for unknown connection handle ##" appears in the system log because I'm shaking the mouse.
  Sometimes it takes over 4 minutes of shaking to reconnect the mouse.

  I do not know where to report this bug.

  Is it the kernel? Because it's the kernel that report that something is happening on the bluetooth receiver.
  Is it HCI? Because if I reset hci0, I have to shake the mouse again.
  Is it the hardware driver that enter sleep mode incorrectly?
  And finally, is it the bluetooth stack?

  This machine runs Ubuntu 16.04 but I've had this  problem as long as I've had this computer. It's a Lenovo G50-45 with a Realtek 8723BE Wifi/Bluetooth combo HARDCODED into the BIOS (It will not boot if you change the network card to something else, like Intel 7260).
  ApportVersion: 2.20-0ubuntu3
  Architecture: amd64
   /dev/snd/controlC0:  fredrik    1894 F.... pulseaudio
   /dev/snd/controlC1:  fredrik    1894 F.... pulseaudio
  CurrentDesktop: GNOME-Flashback:Unity
  DistroRelease: Ubuntu 16.04
  HibernationDevice: RESUME=UUID=9ec0fd10-34c8-49e3-b061-5a4ead3a24a9
  InstallationDate: Installed on 2015-01-22 (395 days ago)
  InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
  MachineType: LENOVO 80E3
  Package: linux (not installed)
  ProcFB: 0 radeondrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-6-generic root=UUID=fce91e77-dd20-4685-92a5-d75cd06ff8b6 ro persistent quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 4.4.0-6.21-generic 4.4.1
   linux-restricted-modules-4.4.0-6-generic N/A
   linux-backports-modules-4.4.0-6-generic  N/A
   linux-firmware                           1.156
  Tags:  xenial
  Uname: Linux 4.4.0-6-generic x86_64
  UpgradeStatus: Upgraded to xenial on 2015-05-26 (272 days ago)
  UserGroups: adm cdrom dip lpadmin netdev plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 08/26/2014
  dmi.bios.vendor: LENOVO
  dmi.bios.version: A2CN25WW(V1.07)
  dmi.board.asset.tag: No Asset Tag
  dmi.board.name: Lancer 5B2
  dmi.board.vendor: LENOVO
  dmi.board.version: SDK0F82993 WIN
  dmi.chassis.asset.tag: No Asset Tag
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Lenovo G50-45
  dmi.modalias: dmi:bvnLENOVO:bvrA2CN25WW(V1.07):bd08/26/2014:svnLENOVO:pn80E3:pvrLenovoG50-45:rvnLENOVO:rnLancer5B2:rvrSDK0F82993WIN:cvnLENOVO:ct10:cvrLenovoG50-45:
  dmi.product.name: 80E3
  dmi.product.version: Lenovo G50-45
  dmi.sys.vendor: LENOVO

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