All Bluetooth devices disconnect randomly and cannot reconnect on Intel 7260

[Paweł Pańczyk]

I've been having issues with bluetooth on my laptop.

The problem is that sometimes all devices (wireless keyboard and mouse) are suddenly disconnected. When I try to reconnect them manually, nothing happens, although Bluetooth is shown as turned on. When I turn it off, I cannot turn it back on - both using the GUI and bluetoothctl.

I tried adding "btusb.enable_autosuspend=0" kernel option, but it did not help.
After it happens, the only way to make it work again is to reboot or remove the btusb module, load it back and restart bluetooth.service.

It was happening on Ubuntu 18.04.4 with kernel 5.3 and is still present on 20.04.1 with 5.4 (fresh install, not an upgrade).

My bluetooth module is integrated in the WiFi card Intel 7260.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-51-generic 5.4.0-51.56
ProcVersionSignature: Ubuntu 5.4.0-51.56-generic 5.4.65
Uname: Linux 5.4.0-51-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27.9
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: pawelp 1460 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Sun Oct 18 18:22:15 2020
InstallationDate: Installed on 2020-06-03 (137 days ago)
InstallationMedia: Kubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
MachineType: Dell Inc. Inspiron 7720
ProcEnviron:
 LANGUAGE=pl:en_US
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=pl_PL.UTF-8
 SHELL=/bin/bash
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-51-generic root=UUID=7da4311a-7b5b-4615-915f-8458e2ba42d3 ro quiet splash nvidia-drm.modeset=1 btusb.enable_autosuspend=0 vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-51-generic N/A
 linux-backports-modules-5.4.0-51-generic N/A
 linux-firmware 1.187.3
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 05/19/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A17
dmi.board.name: 072P0M
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: 0.1
dmi.modalias: dmi:bvnDellInc.:bvrA17:bd05/19/2015:svnDellInc.:pnInspiron7720:pvr:rvnDellInc.:rn072P0M:rvrA01:cvnDellInc.:ct8:cvr0.1:
dmi.product.family: ChiefRiver System
dmi.product.name: Inspiron 7720
dmi.product.sku: Inspiron 7720
dmi.sys.vendor: Dell Inc.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

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