Re: [REGRESSION] Bluetooth: ASUS USB-BT540 (0b05:1bef) fails after BTUSB_REALTEK quirk

From: Thorsten Leemhuis

Date: Sun Sep 27 2026 - 04:12:22 EST


On 9/26/26 10:49, Niko wrote:
>
> I would like to report a regression affecting an ASUS USB-BT540 Bluetooth
> adapter (USB ID 0b05:1bef).
>
> The regression appears to be caused by commit:
>
> 980084de4d9b25193398d89a1c0430ba3501b683
> Bluetooth: btusb: Add ASUS USB-BT540 for Realtek 8761CU
>
> which adds BTUSB_REALTEK | BTUSB_WIDEBAND_SPEECH for this USB ID.
> [...]
>   Raspberry Pi kernel: 6.18.50+rpt-rpi-v8
>From reading
https://lore.kernel.org/all/daily-reply-0016-re-btusb-rtl8761cuv-regression@xxxxxxxxxx/
I suspect that latest upstream fixed this already. Please report back if
not. Ciao, Thorsten