Even though I reported this issue already a few years ago, unluckily it is still present. I ignored it in the meanwhile, however I started to locate the problem's cause again. My mouse is a multi-device, so I paired it again using a live Linux (to avoid any inference with the existing paring) but as a separate device. Surprisingly, the issue is not present then. Calling
sudo /etc/init.d/bluetooth restart shortly disconnects the mouse (as expected) but thereafter it's working without any freezes. I tried to find out what's different, and comparing the configuration files inside /var/lib/bluetooth/<Mac>/<device> I noticed that the respective 'info' files are not the same. Of course, the keys are different, but besides the, the non-working connection contains the following two sections: [ConnectionParameters] MinInterval=6 MaxInterval=9 Latency=44 Timeout=216 [ServiceChanged] CCC_LE=2 I tried to manually delete these sections, but calling sudo /etc/init.d/bluetooth restart recreates the file including both sections. I suspect that these values were negotiated using the initial pairing under Windows and saved on the mouse itself, therefore Linux uses them, too, were they cause the reconnection issues. Can this information be used to fixed this issue? Can I overwrite this configuration somehow? -- 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 20.04 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
