Tested with a:
Bus 001 Device 005: ID 0a5c:217f Broadcom Corp. BCM2045B (BDC-2.1)
on 
4.8.0-rc1+ #1 SMP Fri Aug 12 15:49:49 BST 2016 x86_64 x86_64 x86_64 GNU/Linux
which works fine if the datarate is not too high (approx 50kbps) but becomes 
unreliable at higher data rates.
Decive discovery is also very reliable.
With this dongle is close-ish to the kernel 3.x performance.

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1611532

Title:
  bluetooth USB dongle CSR8510 causes system freeze

Status in Linux:
  New
Status in linux package in Ubuntu:
  Confirmed

Bug description:
  - Do a rfcomm bind.
  - Try a cat /dev/rfcomm0
  In about 50% of cases the system completely freezes. In the other 40% the 
rfcomm data is garbled. In the remaining 10% the data is fine.
  The bt device at the other end is an RN42 which transmits text data.

  When scanning for devices often the bt name is not displayed or is
  shown as unknown.

  It worked perfectly under the previous LTS (precise) which was a 32
  bit version.

  The xenial I'm using now is a 64bit version.

  I've tried it on two computers and the behaviour is the same (both 64
  bit versions)

  Description:  Ubuntu 16.04.1 LTS
  Release:      16.04

  Linux bp1-ThinkPad-X220 4.4.0-34-generic #53-Ubuntu SMP Wed Jul 27
  16:06:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: linux-image-4.4.0-31-generic 4.4.0-31.50 [modified: 
boot/vmlinuz-4.4.0-31-generic]
  ProcVersionSignature: Ubuntu 4.4.0-34.53-generic 4.4.15
  Uname: Linux 4.4.0-34-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2.1
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  bp1        3466 F.... pulseaudio
  CurrentDesktop: Unity
  Date: Tue Aug  9 22:57:18 2016
  HibernationDevice: RESUME=UUID=8159b870-9b8b-418d-ba7f-681dacd3fb94
  InstallationDate: Installed on 2016-07-24 (16 days ago)
  InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 
(20160719)
  MachineType: LENOVO 4291SX7
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-34-generic 
root=UUID=a4df6be3-87d1-4a4f-8576-2c3fc031806e ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-4.4.0-34-generic N/A
   linux-backports-modules-4.4.0-34-generic  N/A
   linux-firmware                            1.157.2
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/18/2013
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 8DET69WW (1.39 )
  dmi.board.asset.tag: Not Available
  dmi.board.name: 4291SX7
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: 
dmi:bvnLENOVO:bvr8DET69WW(1.39):bd07/18/2013:svnLENOVO:pn4291SX7:pvrThinkPadX220:rvnLENOVO:rn4291SX7:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 4291SX7
  dmi.product.version: ThinkPad X220
  dmi.sys.vendor: LENOVO

To manage notifications about this bug go to:
https://bugs.launchpad.net/linux/+bug/1611532/+subscriptions

-- 
Mailing list: https://launchpad.net/~kernel-packages
Post to     : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to