[hirsute] [Intel AX200 Bluetooth] Bluetooth speakers reconnect randomly

[Anton Sudak]

Bluetooth speakers reconnect randomly.
The onlt workaround that seems to work is to remove speakers from paired devies, restart buetooth service and connect them once again. Once these stepss are performed connection become stable until reboot or hibernation.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: bluez 5.56-0ubuntu4
ProcVersionSignature: Ubuntu 5.11.0-16.17-generic 5.11.12
Uname: Linux 5.11.0-16-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu65
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: GNOME
Date: Sun Apr 25 17:22:11 2021
InstallationDate: Installed on 2021-04-13 (12 days ago)
InstallationMedia: Ubuntu 20.10 "Groovy Gorilla" - Release amd64 (20201022)
InterestingModules: rfcomm bnep btusb bluetooth
Lsusb:
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
 Bus 001 Device 004: ID 174f:1800 Syntek Integrated RGB Camera
 Bus 001 Device 003: ID 8087:0029 Intel Corp. AX200 Bluetooth
 Bus 001 Device 002: ID 17ef:60a9 Lenovo Lenovo Essential Wireless Keyboard and Mouse Combo
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO F0FA0066UA
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.11.0-16-generic root=UUID=9ef69356-31e9-488f-9a6b-99e10c0ed863 ro quiet splash vt.handoff=7
SourcePackage: bluez
UpgradeStatus: Upgraded to hirsute on 2021-04-18 (6 days ago)
dmi.bios.date: 03/31/2021
dmi.bios.release: 1.32
dmi.bios.vendor: LENOVO
dmi.bios.version: O4VKT32A
dmi.board.asset.tag: INVALID
dmi.board.name: 371F
dmi.board.vendor: LENOVO
dmi.board.version: SDK0J40688 WIN 3424143288435
dmi.chassis.type: 13
dmi.chassis.vendor: LENOVO
dmi.chassis.version: 0.1
dmi.ec.firmware.release: 1.13
dmi.modalias: dmi:bvnLENOVO:bvrO4VKT32A:bd03/31/2021:br1.32:efr1.13:svnLENOVO:pnF0FA0066UA:pvrIdeaCentreAIO527IMB05:rvnLENOVO:rn371F:rvrSDK0J40688WIN3424143288435:cvnLENOVO:ct13:cvr0.1:
dmi.product.family: IdeaCentre AIO 5 27IMB05
dmi.product.name: F0FA0066UA
dmi.product.sku: LENOVO_MT_F0FA_BU_Lenovo_FM_IdeaCentre AIO 5 27IMB05
dmi.product.version: IdeaCentre AIO 5 27IMB05
dmi.sys.vendor: LENOVO
hciconfig:
 hci0: Type: Primary Bus: USB
  BD Address: 44:AF:28:F7:A9:6C ACL MTU: 1021:4 SCO MTU: 96:6
  UP RUNNING PSCAN ISCAN
  RX bytes:2239397 acl:225 sco:0 events:318945 errors:0
  TX bytes:207283666 acl:315238 sco:0 commands:3564 errors:0

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Alex Haan (alexhaaniwink)]

The same happens to me since my upgrade from Ubuntu 20.10 to 21.04 recently.

My Bluetooth Boze headset at any moment goes completely silent and after a few seconds disconnects to automatically reconnect a moment later.

`dmesg` then only shows a line like already shared in the log files from Anton and like the last line in my attached syslog.txt. Every time that 'input' number increases by one.

This is the only Bluetooth device I use on my less than a year old Lenovo Thinkpad.

[Anton Sudak (anton-sudak)]

Issue occurs in impish as well.

[Daniel van Vugt (vanvugt)]

The most likely cause of this problem is environmental such as:

  * Other Bluetooth devices in the same area, like mice; or

  * 2.4GHz wifi networks interfering with Bluetooth. Try using 5GHz networks, or wired networking instead.

[Maxim Petrov (maximpetrov)]

Most likely cause of this problem is this bug in linux-firmware

https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1933771

[Daniel van Vugt (vanvugt)]

Yes I was thinking that but didn't have any evidence of it yet. Let's group this with bug 1933771 for now.