blueman-manager crashed with AssertionError in device_remove_event()

[mschaaf]

Crash on disabling the bluetooth device.

ExecutablePath: /usr/bin/blueman-manager
ExecutableTimestamp: 1739327663
InterpreterPath: /usr/bin/python3.13
Package: blueman 2.4.4~1-0syncable1
PackageArchitecture: amd64
ProcCmdline: /usr/bin/python3 /usr/bin/blueman-manager
SourcePackage: blueman
Traceback:
 Traceback (most recent call last):
   File "/usr/lib/python3/dist-packages/blueman/gui/DeviceList.py", line 118, in __on_manager_signal
     self.device_remove_event(path)
     ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
   File "/usr/lib/python3/dist-packages/blueman/gui/manager/ManagerDeviceList.py", line 322, in device_remove_event
     assert tree_iter is not None
            ^^^^^^^^^^^^^^^^^^^^^
 AssertionError
Architecture: amd64
DistroRelease: Ubuntu 25.04

steps to reproduce

• enable bluetooth device on computer
• connect a bluetooth device, e.g. headset
• put the computer into hibernation
• turn it on again
  • the device is no longer connected
• run bluetoothctl power off
  • I have a background job running that disables bluetooth via this command if no device is connected, but you should be able to call it manually

[infirit]

Can you describe the steps that led to this more so we can try to reproduce this? For example, blueman doesn't have a disable button, so what did you do to disable a device.

[mschaaf]

@infirit I put the steps to reproduce in the description.