From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 65FB133CEA7 for ; Thu, 2 Jul 2026 21:32:05 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783027925; cv=none; b=hhsysqWqUxQIxBZLjp0F0TEee+t0T4Y851mrJ2k1ahO2s7q3V5FOpOCTe0r4VJRqTZ9eKjFCWq/2OYvFNAEXelaHQ7Y5IxHtEZIvJpwmr1jFtpo+gzhFLCDdlSl0LkNjxeT5hRb+y9O+2fJG/kj/mZE+OJIm58U0JT7b3iu7XAc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783027925; c=relaxed/simple; bh=aZ5TDTB1Ih7yLbTC7NNKcixwQNurW1p0XP7xPa0OmPA=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=G8T689SzUsYi7nCyCLg7ofBHq2sRO4uye9fjswrKG14Kpk1u6zbNa9/0IJetf3TQaCafmNjOn5ssLBhW50fetYWuWaLv7KeKTafAVMhGAguE0D6ZjFvyw0d2yxDaI04IJGe+QivrDRCjVm1sV8qoCrUh9S0XCAbFBeuThAS88h8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=TctdIZoz; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="TctdIZoz" Received: by smtp.kernel.org (Postfix) with ESMTPS id EC2FCC19425 for ; Thu, 2 Jul 2026 21:32:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1783027925; bh=aZ5TDTB1Ih7yLbTC7NNKcixwQNurW1p0XP7xPa0OmPA=; h=From:To:Subject:Date:In-Reply-To:References:From; b=TctdIZozweKpE+RxHarTcWZGH6ch49vpLqQ326mnlo6atBrePVi53SCA/0GIpVWcB cYfdkYMWH4CtlkbQjqdLaiTp7sqWzvlNS4sDPkI0uilvujPj/qTBP4vIkO7M8BjlJE NqpvuqRrX2gAC3ACSD56gN1X4otaK2dQvEpDsV8wolEYblnx7KL5BP92S+nYqCEp9u noAUELKi1RNlqqMFJHJdXHHx4Ay3bApwjBPrLZfqFpJH2zySbU8JrTIqqMAEzXWRBq XC5SvCgarEHu4v87KjFngEQWktiSURRsq2/SgJveB93+XDyqpG7BArhv5+RNoR+sJh 04aF7Tde+6GXA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id DC3F1C41613; Thu, 2 Jul 2026 21:32:04 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-bluetooth@vger.kernel.org Subject: [Bug 221521] Bluetooth: btusb/mt7921 - Failed to send wmt func ctrl (-22) on MediaTek MT7921 combo adapter Date: Thu, 02 Jul 2026 21:32:04 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Drivers X-Bugzilla-Component: Bluetooth X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: xyukta@gmail.com X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: CODE_FIX X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-bluetooth@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D221521 xyukta@gmail.com changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |xyukta@gmail.com --- Comment #18 from xyukta@gmail.com --- I can reproduce this on another MT7921 system. Hardware Lenovo laptop MT7921 PCIe Wireless Network Adapter PCI ID: 14c3:7961 Bluetooth USB: 0489:e0cd Distribution Void Linux Working kernel 6.12.74_1 Broken kernel 6.18.32_1 This is a regression. Bluetooth works normally on Linux 6.12.74. After booting Linux 6.18.32: bluetoothctl list returns no controllers. bluetoothctl show reports No default controller available. bluetui shows an empty interface because no controller is available. The Bluetooth USB device is detected and bound to btusb, and /sys/class/bluetooth/hci0 exists. Additional kernel messages after the initial error include: Bluetooth: hci0: Execution of wmt command timed out Bluetooth: hci0: Failed to send wmt patch dwnld (-110) Bluetooth: hci0: Failed to set up firmware (-110) Booting the already-installed 6.12.74 kernel immediately restores Bluetooth without changing firmware or userspace. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=