From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=100.103.45.18 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1792909011; b=Xsmh5YsPTsZcKx5bPncr9GVjvpE2Q0K9GtUOZLD9jQMpfOn2DYJugfGKT/U1VLn25om4 +ESZh3x2OpLylvR55ipW2cAuhOCBF91AFbzWq9jMrf0ykiy49UAy4+mTrbuo9yQNBfqWK na67DmxLP3DQqcTPeUaMWiTWhc3tj6kiSoYJliHhcw5y6U21sPVkNBgIe1VhxynzP00ry 1yJMqSh3Kz9AGhfIwWEybx2yrVx1wdCjUx/AM6V+yLT6CzxSL5zu9zb7oDBeS/ru9h+Rm szuhUZ/4LqtDIVCFgrpe6eGYthZy09osFJqqDx+nwbiqV/2skm4HewoW9G6oUCAI8xA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1792909011; h=Received:DKIM-Signature:Date:From:To:Subject:Message-ID:References: MIME-Version:Content-Type:Content-Disposition:In-Reply-To; bh=SRP8nZb2C09nTQawQpLUGcPnBKlbSpgwPopviakaXUs=; b=BKp5kYXeTQlpp0OUKBS6zNOsgH7QJRm5RAgWJyri6T53G395p1uJ0jm+pijo7hE7vSO5 yvFtVwI5ReBQDC/3kUdJd5vKTryvBtw8ULuep7/+WAkWDjQG0z99XSDKecJJGuKCDar4e KHnoLkiy0bAaw924RpXWd6CebWtBJ8kZR7Pvod08uhLx4MR3xF+dQwUlvmOGbRfyHFGHS PyrdOdsOCBVMDRyNNvsc6jax0Eqvu8rPK1Z9bRmqoW8V+4tWCdRC8m4bUnoUuRbVv9/22 WcSPxxvfCJp+n6XyH8eu5saoBiTQztP3UXw/xWn7dIXmkrxAlXs6DmrGyEV+B+/TPQA== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b="A7Yg8I4/"; arc=none smtp.remote-ip=100.103.45.18 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 91F3A606A31E; Sun, 25 Oct 2026 06:16:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.a=rsa-sha256 header.s=korg header.b=A7Yg8I4/ Received: by smtp.kernel.org (Postfix) with ESMTPSA id DBC7F1F01825; Sun, 25 Oct 2026 06:16:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1792909010; bh=SRP8nZb2C09nTQawQpLUGcPnBKlbSpgwPopviakaXUs=; h=Date:From:To:Subject:References:In-Reply-To; b=A7Yg8I4/fq+JFr4w7sXObFLPHve2rQJbwts2pPyoPZIvzC3Vq1XqFJ0933fruY4GI meKK5qWlNxFOEAVa3nY+UlEdRzz7Mlx4pQA78eaCDub07g0RUo+6Ql47S8W2TNEUAP zNB50QuC+O2zBpgXVK+W3RFm3qJD2ycl3T9rXqAY= Date: Sun, 25 Oct 2026 07:16:47 +0100 From: Greg Kroah-Hartman To: Sasha Levin , Marcel Holtmann , Salvatore Bonaccorso , Luiz Augusto von Dentz , Erik Brangs , benh@debian.org, stable@vger.kernel.org, regressions@lists.linux.dev, linux-bluetooth@vger.kernel.org, 1149377@bugs.debian.org, Christoph Zwerschke , Thorsten Leemhuis Subject: Re: [regression 6.12.y] After backport of 980084de4d9b ("Bluetooth: btusb: Add ASUS USB-BT540 for Realtek 8761CU") bluethooth not anymore working on 0b05:1bef ASUSTek Computer, Inc. Bluetooth Controller (requests firmware) Message-ID: <2026102508-thicket-duration-c971@gregkh> References: <8aa88f3e-2dd7-4bfe-a0f3-e5ecbbade84f@leemhuis.info> <2026-10-24-1-daily-reply-0001-bluetooth-asus-rtl8761cu-firmware@kernel.org> X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <2026-10-24-1-daily-reply-0001-bluetooth-asus-rtl8761cu-firmware@kernel.org> On Sat, Oct 24, 2026 at 04:10:59PM -0400, Sasha Levin wrote: > > I did meanwhile and agree, the backports of these should be reverted > > from 6.18.y and 6.12.y: > > > > * 980084de4d9b25 ("Bluetooth: btusb: Add ASUS USB-BT540 for Realtek > > 8761CU") [v7.3-rc1] > > * 6f0624b4427e38 ("Bluetooth: btusb: Add ASUS USB-BT600 for Realtek > > 8761CU") [v7.3-rc1] > > * 4a23ce935f74d1 ("Bluetooth: btrtl: Add the support for RTL8761CUV") > > [v6.19-rc1] > > The stable trees match mainline here, so nothing is going into stable for > this. The fix has to come from the Bluetooth maintainers or Christoph: an > upstream revert of the ID commits, or a fallback to the ROM firmware when > rtl8761cu_fw.bin is missing. Stable will take either one for 7.2, 6.18 and > 6.12 through the normal Cc: stable route once it is in mainline. > > The other way out is on the distro side. rtl_bt/rtl8761cu_fw.bin has been in > linux-firmware since 20251111, so a newer firmware-realtek package fixes this > without any kernel change. That's the simplest solution, any users hitting this should also upgrade that package as it's been out for almost a year now. thanks, greg k-h