Ubuntu 16.04 bluetooth doesn't work

[crystal]

my bluetooth can't work on 16.04, and I can't find any bluetooth devices

rfkill list all0: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: no

root@kylin:~# modprobe -r ath9k
root@kylin:~# modprobe ath9k btcoex_enable=1
root@kylin:~# dmesg
[10360.713793] ath9k: ath9k: Driver unloaded
[10371.944735] cfg80211: World regulatory domain updated:
[10371.944741] cfg80211: DFS Master region: unset
[10371.944744] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp), (dfs_cac_time)
[10371.944748] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[10371.944751] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm), (N/A)
[10371.944753] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (N/A, 2000 mBm), (N/A)
[10371.944757] cfg80211: (5170000 KHz - 5250000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (N/A)
[10371.944760] cfg80211: (5250000 KHz - 5330000 KHz @ 80000 KHz, 160000 KHz AUTO), (N/A, 2000 mBm), (0 s)
[10371.944762] cfg80211: (5490000 KHz - 5730000 KHz @ 160000 KHz), (N/A, 2000 mBm), (0 s)
[10371.944765] cfg80211: (5735000 KHz - 5835000 KHz @ 80000 KHz), (N/A, 2000 mBm), (N/A)
[10371.944768] cfg80211: (57240000 KHz - 63720000 KHz @ 2160000 KHz), (N/A, 0 mBm), (N/A)
[10371.980340] ath: phy0: WB335 2-ANT card detected
[10371.980346] ath: phy0: Set BT/WLAN RX diversity capability
[10371.989226] ath: phy0: Enable LNA combining
[10371.991578] ath: phy0: ASPM enabled: 0x43
[10371.991581] ath: EEPROM regdomain: 0x65
[10371.991582] ath: EEPROM indicates we should expect a direct regpair map
[10371.991585] ath: Country alpha2 being used: 00
[10371.991586] ath: Regpair used: 0x65
[10371.992324] ieee80211 phy0: Selected rate control algorithm 'minstrel_ht'
[10371.996969] ath9k 0000:04:00.0 wlp4s0: renamed from wlan0
[10371.997394] ieee80211 phy0: Atheros AR9565 Rev:1 mem=0xffffc90001f00000, irq=18
[10372.027978] IPv6: ADDRCONF(NETDEV_UP): wlp4s0: link is not ready
[10372.042470] IPv6: ADDRCONF(NETDEV_UP): wlp4s0: link is not ready
[10372.088335] IPv6: ADDRCONF(NETDEV_UP): wlp4s0: link is not ready
---
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: kylin 3640 F.... pulseaudio
DistroRelease: Ubuntu 16.04
HibernationDevice: RESUME=UUID=e91d15d7-342e-4356-a805-54c2c2098abc
InstallationDate: Installed on 2016-08-29 (0 days ago)
InstallationMedia: Ubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
MachineType: LENOVO R2000T-I
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-36-generic root=UUID=f113e79a-a0b7-4f7a-84c0-b5644ae40e63 ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.4.0-36.55-generic 4.4.16
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-4.4.0-36-generic N/A
 linux-backports-modules-4.4.0-36-generic N/A
 linux-firmware 1.157.3
RfKill:
 1: phy0: Wireless LAN
  Soft blocked: no
  Hard blocked: no
Tags: xenial
Uname: Linux 4.4.0-36-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups:

_MarkForUpload: True
dmi.bios.date: 08/12/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: IV35R019 0.19
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: RN1402
dmi.board.vendor: LENOVO
dmi.board.version: To be filled by O.E.M.
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrIV35R0190.19:bd08/12/2015:svnLENOVO:pnR2000T-I:pvrTobefilledbyO.E.M.:rvnLENOVO:rnRN1402:rvrTobefilledbyO.E.M.:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: R2000T-I
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1617897

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[crystal (weiyanbin)]

apport information

[crystal (weiyanbin)]

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[crystal (weiyanbin)]

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[crystal (weiyanbin)]

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[crystal (weiyanbin)]

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[crystal (weiyanbin)]

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[crystal (weiyanbin)]

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[crystal (weiyanbin)]

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[crystal (weiyanbin)]

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[crystal (weiyanbin)]

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[crystal (weiyanbin)]

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[crystal (weiyanbin)]

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[crystal (weiyanbin)]

apport information

[Joseph Salisbury (jsalisbury)]

Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?

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-rc3

[crystal (weiyanbin)]

I download the latest versionkernel v4.8, but can't find my bluetooth.
uname -a
Linux kylin-To-be-filled-by-O-E-M 4.8.0-040800rc3-generic #201608212032 SMP Mon Aug 22 00:34:39 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
I see some buglist about ar9565 can't find bluetooth.that can't help me.

[penalvch (penalvch)]

crystal, could you please provide the full computer manufacturer and model as noted on the sticker of the computer itself (not from the Bug Description, or the result of a terminal command)?

[Dylan (dylanjones2011)]

I am also affected on both 4.4.0 and the newest 4.8.0rc6. My laptop is a Acer R3-471T-53LA with Qualcomm Atheros QCA9565 / AR9565 Wifi/bluetooth combo chip. The adapter works for Wifi, but is not detected as a Bluetooth device.

[crystal (weiyanbin)]

yes, I think y problem same with you.The adapter works for Wifi, but is not detected as a Bluetooth device.

[penalvch (penalvch)]

Dylan, it will help immensely if you filed a new report with the Ubuntu repository kernel (not mainline/upstream) via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

For more on why this is helpful, please see https://wiki.ubuntu.com/ReportingBugs.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]