Hi Zamir, >>> Add new compatible device RTL8761B. >>> >>> Signed-off-by: Ziqian SUN (Zamir) <sztsian@xxxxxxxxx> >>> --- >>> drivers/bluetooth/btrtl.c | 10 +++++++++- >>> 1 file changed, 9 insertions(+), 1 deletion(-) >> can you also please include the content of /sys/kernel/debug/usb/devices for this device in the commit message. >> And if you run btmon before plugging it in, I like to see what LE Features of Bluetooth 5.0 this dongle really offers. > > Hi Marcel, > > I think you want this section > > Supported settings: 0x0001bfff > Powered > Connectable > Fast Connectable > Discoverable > Bondable > Link Security > Secure Simple Pairing > BR/EDR > High Speed > Low Energy > Advertising > Secure Connections > Debug Keys > Privacy > Static Address > PHY Configuration > > Full log of btmon is available here, with the mac address masked http://fars.ee/Lu85 > > I'll send a v3 to include the usb info in the commit message shortly. This hardware is funny. Before the firmware patching it says this: < HCI Command: Read Local Version In.. (0x04|0x0001) plen 0 > HCI Event: Command Complete (0x0e) plen 12 Read Local Version Information (0x04|0x0001) ncmd 2 Status: Success (0x00) HCI version: Bluetooth 5.1 (0x0a) - Revision 11 (0x000b) LMP version: Bluetooth 5.1 (0x0a) - Subversion 34657 (0x8761) Manufacturer: Realtek Semiconductor Corporation (93) And after the firmware patching it downgrades to Bluetooth 5.0 standard: < HCI Command: Read Local Version... (0x04|0x0001) plen 0 > HCI Event: Command Complete (0x0e) plen 12 Read Local Version Information (0x04|0x0001) ncmd 2 Status: Success (0x00) HCI version: Bluetooth 5.0 (0x09) - Revision 55448 (0xd898) LMP version: Bluetooth 5.0 (0x09) - Subversion 50044 (0xc37c) Manufacturer: Realtek Semiconductor Corporation (93) Anyway, I was after these LE Features: < HCI Command: LE Read Local Suppo.. (0x08|0x0003) plen 0 > HCI Event: Command Complete (0x0e) plen 12 LE Read Local Supported Features (0x08|0x0003) ncmd 2 Status: Success (0x00) Features: 0xfd 0x5f 0x00 0x00 0x00 0x00 0x00 0x00 LE Encryption Extended Reject Indication Slave-initiated Features Exchange LE Ping LE Data Packet Length Extension LL Privacy Extended Scanner Filter Policies LE 2M PHY Stable Modulation Index - Transmitter Stable Modulation Index - Receiver LE Coded PHY LE Extended Advertising Channel Selection Algorithm #2 This seems to be a genuine USB dongle with Bluetooth 5.0 features. Regards Marcel