Arch Linux

depeo

Member

Registered: 2020-11-19

Posts: 15

TP-Link Bluetooth 5.3 Nano USB Adapter

Hello,

I'm trying to get this usb adapter working:
Bus 001 Device 004: ID 2357:0604 TP-Link TP-Link Bluetooth USB Adapter

I connected the bluetooth headset Sony xm1005, it connects fine.
When I try to play audio it disconnects, I tried this in KDE audio setting, (left/right channel). I could hear the voice saying left, and after that it disconnected before I could test the right channel.

Here is the log from the bluetooth daemon when it disconnected.

[dp@desktop ~]$ journalctl -f -u bluetooth
Aug 20 18:31:54 desktop bluetoothd[642]: /org/bluez/hci0/dev_AC_80_0A_22_CB_C7/sep3/fd10: fd(32) ready
Aug 20 18:31:54 desktop bluetoothd[642]: src/profile.c:ext_io_disconnected() Unable to get io data for Hands-Free Voice gateway: getpeername: Transport endpoint is not connected (107)

I think the tp-link adapter is based on Realtek RTL8761B.
I tried extracting the latest firmware from the windows drivers cab files, I put that firmware into /lib/firmware/rtl_bt/rtl8761b_fw.bin, and rebooted, that didn't change anything. I restored the original firmware file since that didn't work.

Any ideas?

depeo

Member

Registered: 2020-11-19

Posts: 15

Re: TP-Link Bluetooth 5.3 Nano USB Adapter

I'm thinking about just getting UGREEN Bluetooth 5.3 Adapter, It says in the Amazon listing it supports Linux, but when I google it I see a lot of people having Linux issues with it. Hmm.

depeo

Member

Registered: 2020-11-19

Posts: 15

Re: TP-Link Bluetooth 5.3 Nano USB Adapter

OK, so I solved it. 
I was passing trough a USB port from my kvm-host to a Arch VM, which causes the issues.

The solution was to get a separate USB pcie controller and pass through the whole card to the VM. That solved all issues.