Arch Linux

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.

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

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.

Pyntux

Member

From: Serbia

Registered: 2008-12-21

Posts: 384

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

Problem still here:

Kernel: 6.1.12-arch1-1
Host: Thinkpad t460

---

I do not speak English, but I understand...

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 19,132

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

Sorry to rain on the parade, Like Jenny08, I get the message

Feb 17 17:08:30 odin kernel: Bluetooth: hci0: Malformed MSFT vendor event: 0x02

  Regardless, the functionality with my phone, speaker and headset are seamless.
I think this message is a red herring unrelated to the problems you are encountering.

To everyone in the thread -- do you have other devices in the vicinity that may also be paired to the target device?  I can get nondeterministic behavior if both my phone and Arch laptop are both associated with my headset.  I've had the phone ring in the middle of a Teams meeting and had the headset drop the meeting as the headset is captured by the phone.   Or, if i have been playing music to the speaker from my phone, then try from Linux, Bluetooth will connect, but there will be no audio,

---

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

shamanstk

Member

Registered: 2009-11-11

Posts: 35

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

I am getting this error on a brand new Lenovo X1 Carbon that has never had anything paired to it.

saeziae

Member

Registered: 2023-03-15

Posts: 1

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

I get

Bluetooth: hci0: Malformed MSFT vendor event: 0x02

everytime on boot.
However, Bluetooth works well as if nothing happened.
Device is Intel Wi-Fi 6 AX210 on MSI Laptop Delta 15. Kernel is 6.2.6-arch1-1.

Last edited by saeziae (2023-03-15 13:43:15)