The problem seems to be missing firmware for your bluetooth chip. The kernel is trying to load it and can't find it. Because package 'linux- firmware' is missing those files.
This is very similar to: https://bugzilla.kernel.org/show_bug.cgi?id=99481 https://bugzilla.kernel.org/show_bug.cgi?id=112671 And see also: http://askubuntu.com/a/632348/167850 ** Bug watch added: Linux Kernel Bug Tracker #99481 https://bugzilla.kernel.org/show_bug.cgi?id=99481 ** Bug watch added: Linux Kernel Bug Tracker #112671 https://bugzilla.kernel.org/show_bug.cgi?id=112671 ** Changed in: bluez (Ubuntu) Status: New => Invalid ** Changed in: linux-firmware (Ubuntu) Status: New => Triaged ** Changed in: linux-firmware (Ubuntu) Importance: Undecided => Medium -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1768001 Title: En Thinkpad T430 con controlador BCM20702A0 Status in bluez package in Ubuntu: Invalid Status in linux-firmware package in Ubuntu: Triaged Bug description: loa dispositivos se intentan conectar y se conectan/desconectan continuamente. Se hace inutilizable el bluetooth. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: bluez 5.48-0ubuntu3 ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17 Uname: Linux 4.15.0-20-generic x86_64 ApportVersion: 2.20.9-0ubuntu7 Architecture: amd64 CurrentDesktop: ubuntu:GNOME Date: Mon Apr 30 13:26:49 2018 InstallationDate: Installed on 2018-04-27 (2 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426) InterestingModules: rfcomm bnep btusb bluetooth MachineType: LENOVO 2349I62 ProcEnviron: PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=es_ES.UTF-8 SHELL=/bin/bash ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-20-generic root=UUID=b9f1f5f8-77c7-404e-92e8-a58f7bd5fa9e ro quiet splash vt.handoff=1 SourcePackage: bluez UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/25/2017 dmi.bios.vendor: LENOVO dmi.bios.version: G1ETB4WW (2.74 ) dmi.board.asset.tag: Not Available dmi.board.name: 2349I62 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG1ETB4WW(2.74):bd09/25/2017:svnLENOVO:pn2349I62:pvrThinkPadT430:rvnLENOVO:rn2349I62:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.family: ThinkPad T430 dmi.product.name: 2349I62 dmi.product.version: ThinkPad T430 dmi.sys.vendor: LENOVO hciconfig: hci0: Type: Primary Bus: USB BD Address: 74:E5:43:C5:85:87 ACL MTU: 1021:8 SCO MTU: 64:1 UP RUNNING PSCAN ISCAN RX bytes:1196 acl:0 sco:0 events:88 errors:0 TX bytes:4095 acl:0 sco:0 commands:86 errors:0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1768001/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp