Bug 505583

SUMMARY
I use KDE Connect to connect my 2 Android phones on my Windows 11 laptop. I also use my bluetooth to connect to my wireless headphones. Since June 6 this year, my bluetooth driver disappears randomly for no reason. Restart doesn't work. Even doing NVRAM reset doesn't work either but reinstalling my driver after doing a NVRAM reset brings it back. When I check my Event Viewer log, it turns out that KDE Connect has issue with QT6Bluetooth.dll which causes the OS to unload the bluetooth driver.

For now, I disabled the bluetooth backend of KDE Connect which I only discovered just now in the app (I had KDE Connect since 2022 and never checked the settings since my initial setup back then). I don't know if this alone will fix the issue.

If disabling the bluetooth backend fixes this, I do hope that you guys disable the bluetooth backend by default. The wifi backend option enabled is enough for initial setup.


STEPS TO REPRODUCE
1. It happens randomly so I don't know how to reproduce it
2. 
3. 


OBSERVED RESULT
These are the content of the Event Viewer logs whenever my bluetooth disappears. The one I copied here happened on June 14 at 1:16 AM:

Faulting application name: kdeconnectd.exe, version: 0.0.0.0, time stamp: 0x68041fc5
Faulting module name: Qt6Bluetooth.dll, version: 6.8.1.0, time stamp: 0x679d352e
Exception code: 0xc0000005
Fault offset: 0x000000000001a3a6
Faulting process id: 0x0x41B8
Faulting application start time: 0x0x1DBDC86DD5ECF00
Faulting application path: C:\Program Files\WindowsApps\KDEe.V.KDEConnect_24.1203.4975.0_x64__7vt06qxq7ptv8\bin\kdeconnectd.exe
Faulting module path: C:\Program Files\WindowsApps\KDEe.V.KDEConnect_24.1203.4975.0_x64__7vt06qxq7ptv8\bin\Qt6Bluetooth.dll
Report Id: 51cedb8f-9f91-434a-a1d9-8a924fdbec90
Faulting package full name: KDEe.V.KDEConnect_24.1203.4975.0_x64__7vt06qxq7ptv8
Faulting package-relative application ID: KDEe.V.KDEConnect

After 3 of this type of log, my bluetooth driver was disabled as shown in the log below:

The local Bluetooth adapter has failed in an undetermined manner and will not be used. The driver has been unloaded.


EXPECTED RESULT
This shouldn't happen at all.


SOFTWARE/OS VERSIONS
Windows: 11 23H2 (Build 22631.5472)
macOS: 
(available in the Info Center app, or by running `kinfo` in a terminal window)
Linux/KDE Plasma: 
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
I attached a video showing the logs in my Event Viewer related to this issue.