Possible dupe of LP: #1904069.
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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 :-)
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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
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