From 1430308fc9d47a801a305700cd444b1a0051d14a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Nikolaj=20Klitlund=20B=C3=B8rty?= Date: Sat, 5 Sep 2026 14:05:12 +0200 Subject: [PATCH] Bluetooth: btusb: Add device ID for Realtek RTL8761BUE (StarTech AV53C1) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add the USB ID 0x14b0:0x047a for the StarTech AV53C1-USB-BLUETOOTH adapter, a Realtek RTL8761BUE based Bluetooth 5.3 dongle. Without this entry btusb treats the device as a generic Bluetooth adapter and never loads the Realtek firmware, leaving the controller on its ROM firmware. In that state it advertises and scans actively, but never reports advertisements during passive scanning. LE connections initiated by the kernel wait for a passive-scan report before issuing LE Create Connection, so connecting and pairing from BlueZ time out without any error from the controller. The same product is also sold with the ID 0x2c0a:0x8761, which is already supported. lsusb -v output for the device: Bus 001 Device 010: ID 14b0:047a StarTech.com Ltd. Bluetooth Radio Device Descriptor: bcdUSB 1.10 bDeviceClass 224 Wireless bDeviceSubClass 1 Radio Frequency bDeviceProtocol 1 Bluetooth idVendor 0x14b0 StarTech.com Ltd. idProduct 0x047a bcdDevice 2.00 iManufacturer 1 Realtek iProduct 2 Bluetooth Radio iSerial 3 00E04C239987 bNumInterfaces 2 Interface Descriptor: bInterfaceClass 224 Wireless bInterfaceSubClass 1 Radio Frequency bInterfaceProtocol 1 Bluetooth Cc: stable@vger.kernel.org Signed-off-by: Nikolaj Klitlund Børty Signed-off-by: Luiz Augusto von Dentz --- drivers/bluetooth/btusb.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c index 2c69a81c9631..a7488f6e8d8a 100644 --- a/drivers/bluetooth/btusb.c +++ b/drivers/bluetooth/btusb.c @@ -884,6 +884,8 @@ static const struct usb_device_id quirks_table[] = { BTUSB_WIDEBAND_SPEECH }, { USB_DEVICE(0x37ad, 0x0600), .driver_info = BTUSB_REALTEK | BTUSB_WIDEBAND_SPEECH }, + { USB_DEVICE(0x14b0, 0x047a), .driver_info = BTUSB_REALTEK | + BTUSB_WIDEBAND_SPEECH }, /* Additional Realtek 8761CU Bluetooth devices */ { USB_DEVICE(0x0b05, 0x1bef), .driver_info = BTUSB_REALTEK |