Public bug reported:

Since upgrading to 24.10, my bluetooth headphones often fail to connect
until I remove them and re-pair.  More specifically, they connect for a
second or two and then immediately disconnect.  Seems to happen more
when I switch them to connect to a different device and come back to
connect to the 24.10 machine, but not a clear pattern on what triggers
it.  Did not experience this on 24.04 fwiw.

error messages in journalctl like:

Oct 23 12:50:49 taplop bluetoothd[2047]: src/profile.c:ext_connect() Hands-Free 
Voice gateway failed connect to XX:XX:XX:XX:XX:XX: Connection refused (111)
Oct 23 12:50:49 taplop bluetoothd[2047]: 
profiles/audio/avdtp.c:avdtp_connect_cb() connect to XX:XX:XX:XX:XX:XX: 
Connection refused (111)
Oct 23 12:50:49 taplop gnome-shell[4441]: Failed to connect device 
"headphones": GDBus.Error:org.bluez.Error.Failed: br-connection-unknown

ProblemType: Bug
DistroRelease: Ubuntu 24.10
Package: bluez 5.77-0ubuntu1
ProcVersionSignature: Ubuntu 6.11.0-8.8-generic 6.11.0
Uname: Linux 6.11.0-8-generic x86_64
ApportVersion: 2.30.0-0ubuntu4
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: GNOME
Date: Wed Oct 23 13:44:33 2024
InstallationDate: Installed on 2019-08-17 (1895 days ago)
InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190305.1)
InterestingModules: rfcomm bnep btusb bluetooth
Lsusb:
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
 Bus 001 Device 002: ID 0bda:58f4 Realtek Semiconductor Corp. 
Integrated_Webcam_HD
 Bus 001 Device 004: ID 0489:e0a2 Foxconn / Hon Hai 
 Bus 001 Device 031: ID 27c6:5395 Shenzhen Goodix Technology Co.,Ltd. 
Fingerprint Reader
 Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
MachineType: Dell Inc. XPS 15 9575
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.11.0-8-generic 
root=UUID=83cade14-7628-437d-8517-36ad82f00d20 ro quiet splash 
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
RebootRequiredPkgs: Error: path contained symlinks.
SourcePackage: bluez
UpgradeStatus: Upgraded to oracular on 2024-10-01 (22 days ago)
dmi.bios.date: 07/11/2023
dmi.bios.release: 1.28
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.28.0
dmi.board.name: 0N338G
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 31
dmi.chassis.vendor: Dell Inc.
dmi.modalias: 
dmi:bvnDellInc.:bvr1.28.0:bd07/11/2023:br1.28:svnDellInc.:pnXPS159575:pvr:rvnDellInc.:rn0N338G:rvrA00:cvnDellInc.:ct31:cvr:sku080D:
dmi.product.family: XPS
dmi.product.name: XPS 15 9575
dmi.product.sku: 080D
dmi.sys.vendor: Dell Inc.
hciconfig:
 hci0:  Type: Primary  Bus: USB
        BD Address: 9C:B6:D0:90:74:7A  ACL MTU: 1024:8  SCO MTU: 50:8
        UP RUNNING PSCAN 
        RX bytes:9818817 acl:136395 sco:0 events:275478 errors:0
        TX bytes:40769018 acl:48133 sco:0 commands:337 errors:0
modified.conffile..etc.bluetooth.main.conf: [modified]
mtime.conffile..etc.bluetooth.main.conf: 2024-03-23T09:45:36.572752

** Affects: bluez (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug oracular wayland-session

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Touch seeded packages, which is subscribed to bluez in Ubuntu.
https://bugs.launchpad.net/bugs/2085473

Title:
  fail to connect to bt headphones until removed and repaired

Status in bluez package in Ubuntu:
  New

Bug description:
  Since upgrading to 24.10, my bluetooth headphones often fail to
  connect until I remove them and re-pair.  More specifically, they
  connect for a second or two and then immediately disconnect.  Seems to
  happen more when I switch them to connect to a different device and
  come back to connect to the 24.10 machine, but not a clear pattern on
  what triggers it.  Did not experience this on 24.04 fwiw.

  error messages in journalctl like:

  Oct 23 12:50:49 taplop bluetoothd[2047]: src/profile.c:ext_connect() 
Hands-Free Voice gateway failed connect to XX:XX:XX:XX:XX:XX: Connection 
refused (111)
  Oct 23 12:50:49 taplop bluetoothd[2047]: 
profiles/audio/avdtp.c:avdtp_connect_cb() connect to XX:XX:XX:XX:XX:XX: 
Connection refused (111)
  Oct 23 12:50:49 taplop gnome-shell[4441]: Failed to connect device 
"headphones": GDBus.Error:org.bluez.Error.Failed: br-connection-unknown

  ProblemType: Bug
  DistroRelease: Ubuntu 24.10
  Package: bluez 5.77-0ubuntu1
  ProcVersionSignature: Ubuntu 6.11.0-8.8-generic 6.11.0
  Uname: Linux 6.11.0-8-generic x86_64
  ApportVersion: 2.30.0-0ubuntu4
  Architecture: amd64
  CasperMD5CheckResult: unknown
  CurrentDesktop: GNOME
  Date: Wed Oct 23 13:44:33 2024
  InstallationDate: Installed on 2019-08-17 (1895 days ago)
  InstallationMedia: Ubuntu 19.04 "Disco Dingo" - Alpha amd64 (20190305.1)
  InterestingModules: rfcomm bnep btusb bluetooth
  Lsusb:
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
   Bus 001 Device 002: ID 0bda:58f4 Realtek Semiconductor Corp. 
Integrated_Webcam_HD
   Bus 001 Device 004: ID 0489:e0a2 Foxconn / Hon Hai 
   Bus 001 Device 031: ID 27c6:5395 Shenzhen Goodix Technology Co.,Ltd. 
Fingerprint Reader
   Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
  MachineType: Dell Inc. XPS 15 9575
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-6.11.0-8-generic 
root=UUID=83cade14-7628-437d-8517-36ad82f00d20 ro quiet splash 
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
  RebootRequiredPkgs: Error: path contained symlinks.
  SourcePackage: bluez
  UpgradeStatus: Upgraded to oracular on 2024-10-01 (22 days ago)
  dmi.bios.date: 07/11/2023
  dmi.bios.release: 1.28
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.28.0
  dmi.board.name: 0N338G
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 31
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: 
dmi:bvnDellInc.:bvr1.28.0:bd07/11/2023:br1.28:svnDellInc.:pnXPS159575:pvr:rvnDellInc.:rn0N338G:rvrA00:cvnDellInc.:ct31:cvr:sku080D:
  dmi.product.family: XPS
  dmi.product.name: XPS 15 9575
  dmi.product.sku: 080D
  dmi.sys.vendor: Dell Inc.
  hciconfig:
   hci0:        Type: Primary  Bus: USB
        BD Address: 9C:B6:D0:90:74:7A  ACL MTU: 1024:8  SCO MTU: 50:8
        UP RUNNING PSCAN 
        RX bytes:9818817 acl:136395 sco:0 events:275478 errors:0
        TX bytes:40769018 acl:48133 sco:0 commands:337 errors:0
  modified.conffile..etc.bluetooth.main.conf: [modified]
  mtime.conffile..etc.bluetooth.main.conf: 2024-03-23T09:45:36.572752

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