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#26 2022-11-17 06:03:39

tonnys
Member
Registered: 2022-11-17
Posts: 1

Re: Error "Bluetooth: hci0: Malformed MSFT vendor event: 0x02"

HP Elitebook 820 G4
Kernel 6.0.2-arch1-1
Intel Wireless-AC 8265
KDE Plasma

Same case. From my observation, about ~1 year ago, the bluetooth state is not this problematic. It worsen. Now, it sometimes:
- Cannot connect.
- Connected, but unusable.
- Connected, then the bluetooth devices turn off by itself while the notification's still showed that the device's connected (bluetooth speaker)
- Rare: bluetooth device disappear. If lucky, restart multiple times will bring it back. Not so lucky? wait 24 hours or more until the bluetooth show up again.

The quickest way for me to reconnect my devices, with > 95% success rate, is with forgetting then re-pairing those devices. I don't know if it's just the case with Arch or it's affecting all distros. Or it's just the case with Intel Wireless-AC PCIe. Or maybe the driver/kernel. At the least, it's not affecting windows 10.

I fire up my qemu  windows 10 VM, mount the bluetooth and pair with my bluetooth speaker, forced disconnect the bluetooth in my laptop and/or the paired bluetooth devices. But they'll connected successfully when I turn it on/ mount the bluetooth again.

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#27 2023-01-20 12:00:05

mimozin
Member
Registered: 2023-01-20
Posts: 1

Re: Error "Bluetooth: hci0: Malformed MSFT vendor event: 0x02"

Some problems here too. In my case, the bluetooth in Manjaro doesn't discover a headset which is paired in the same machine with Windows and Ubuntu.

OS: Manjaro Linux x86_64
Host: Slimbook PROX15-AMD Standard
Kernel: 6.1.1-1-MANJARO
DE: Plasma 5.26.4

dmesg

....
[   31.136198] Bluetooth: hci0: Malformed MSFT vendor event: 0x02
....
[ 2230.294762] Bluetooth: hci0: Opcode 0x2042 failed: -22
....

Here, more information:

https://forum.manjaro.org/t/bluetooth-d … set/129710

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#28 2023-01-23 12:01:56

Jenny08
Member
Registered: 2023-01-23
Posts: 1

Re: Error "Bluetooth: hci0: Malformed MSFT vendor event: 0x02"

Same problem here!
```
Bluetooth: hci0: Malformed MSFT vendor event: 0x02
```

OS: Manjaro Linux x86_64
Kernel: 6.1.1-1-MANJARO
Host: DELL Inspiron 7501

But my bluetooth works fine.
About one out of three times, my system crashes, either when I start it or when I shut it down. But I can't guarantee that it's coming from this message.

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