Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.8 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.8-rc1 ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete ** Tags added: needs-bisect -- 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 package in Ubuntu: Incomplete 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/ubuntu/+source/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
