apport information ** Attachment added: "ProcCpuinfoMinimal.txt" https://bugs.launchpad.net/bugs/1904265/+attachment/5434314/+files/ProcCpuinfoMinimal.txt
-- 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/1904265 Title: Deterministic bluetooth disconnects after login and bluetooth restart Status in linux package in Ubuntu: Confirmed Bug description: Hello everyone, a few months ago I upgraded from 18.04 to 20.04 and since then, I'm into some bluetooth connection issues. I'm a KDE user currently using Ubuntu 5.4.0-53.59-generic 5.4.65, still the reported issue also appears with plain ubuntu 20.04, even a clean live USB version of ubuntu 18.04 reproduces it such that it is independent of any KDE library. I've noticed the following bug already a few months ago, still I would like to wait and see if it might be resolved with a new kernel update or something else. Since it still persists, I now would like to report it to the devs. I found no similar reported bug but if it already has been reported, I'd like to excuse for reporting a duplicate. So, I'm using a Logitech bluetooth LE mouse and with ubuntu 18.04 (actually on any distro based on 18.04 that I tested), everything works fine and without any problems. Still with 20.04, I'm into the following bug that I would like to report. After starting ubuntu, the bluetooth connection to the mouse works (i.e. pointer is moving) and after about 30-40 seconds it stops moving and freezes for about 10-15 seconds and thereafter works again and stays working. The same issue can be reproduced by executing (for instance on a live ubuntu) sudo /etc/init.d/bluetooth restart which stops the bluetooth connection for a few seconds (as expected), immediately it works again but after additional 30-40 seconds, the connection breaks for another 10-15 seconds and thereafter works flawlessly. I checked all configuration files from the /etc/bluetooth/ directory, everything is the same between 18.04 and 20.04 and even modifying the parameters does not change anything at all. As a conclusion of my testing I strongly guess it has either anything to do with a different kernel version or a with a changed bluetooth library between 18.04 and 20.04. So in summary: Expected behavior: Bluetooth connection shortly breaks after 'sudo /etc/init.d/bluetooth restart' and does not break again after 30-40 seconds (as it is the case with ubuntu 18.04) Actual behavior: Bluetooth connection breaks again after reestablishing the connection I'm hoping that this issue can easily be fixed and please let me know if you need any further information :-) --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: ubuntu 5435 F.... pulseaudio /dev/snd/controlC2: ubuntu 5435 F.... pulseaudio /dev/snd/controlC1: ubuntu 5435 F.... pulseaudio CasperMD5CheckResult: pass CasperVersion: 1.445.1 CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.04 LiveMediaBuild: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) MachineType: HP HP Pavilion Gaming Laptop 15-cx0xxx NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair Package: linux (not installed) ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/username.seed maybe-ubiquity quiet splash nomodeset --- ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 RelatedPackageVersions: linux-restricted-modules-5.4.0-42-generic N/A linux-backports-modules-5.4.0-42-generic N/A linux-firmware 1.187.2 Tags: focal Uname: Linux 5.4.0-42-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/07/2019 dmi.bios.vendor: Insyde dmi.bios.version: F.20 dmi.board.asset.tag: Type2 - Board Asset Tag dmi.board.name: 8478 dmi.board.vendor: HP dmi.board.version: 70.55 dmi.chassis.asset.tag: Chassis Asset Tag dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.chassis.version: Chassis Version dmi.modalias: dmi:bvnInsyde:bvrF.20:bd05/07/2019:svnHP:pnHPPavilionGamingLaptop15-cx0xxx:pvrType1ProductConfigId:rvnHP:rn8478:rvr70.55:cvnHP:ct10:cvrChassisVersion: dmi.product.family: 103C_5335KV HP Pavilion dmi.product.name: HP Pavilion Gaming Laptop 15-cx0xxx dmi.product.sku: 4CA30EA#ABD dmi.product.version: Type1ProductConfigId dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1904265/+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
