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 5A3D14071C6 for ; Sat, 6 Jun 2026 23:25:04 +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=1780788305; cv=none; b=hkQvPYHb9rNznv0ct6qnHwNfVaTQF3tS+ShWkNEEY3zJe4GhrUxrtgMGafhu9B/9Vrplmgv35vfnResq/WpcBeY+SA00cmJbf5mJUWydg/07lngCmrGFEUIbGElULek6y0nPirFMAkj17tsaEvHR79EE7iUPGU5HZW8ddFfRT5M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780788305; c=relaxed/simple; bh=oGqFP+GhbUaNUpuyj+tSy0hbC8yVx7BJnEmIxAWLUxE=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=XyDc1nFqStv6VnJrzqzoilH4eKfiU9TXIC66vh1px6l0Pb68tVPvLBB3XfY3aOPPAssSv0fvnPNtSl5tf/f9IGFRqvyBzLbHLqWRvl+7CG4j5rM9Q3OQiesM4y1zZsgTKWT0soZ7V4+Qv+OpfnkUTfkeGVbkZ6bUvRkmrMXLTIE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=rzhwKK9X; 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="rzhwKK9X" Received: by smtp.kernel.org (Postfix) with ESMTPS id D1B06C2BCF4 for ; Sat, 6 Jun 2026 23:25:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1780788304; bh=oGqFP+GhbUaNUpuyj+tSy0hbC8yVx7BJnEmIxAWLUxE=; h=From:To:Subject:Date:In-Reply-To:References:From; b=rzhwKK9XV+NX20bluUflQypC4Bo5mEU064NlojeuxTq2XAl3k1p8XSyxXdICqAwU8 CwMGsURX6huJ54lbpla/7HUQcckFWb5bmo7ikN6Ly0Ea/kC0J9A3cdSrVB/pvFwubm QmZR7C5d21yk7a+6iBUGixrX1FgMVmfuLkgSQ4IlP2zAMFXiiMgye9N2CU6y/7glhF UwNXbDf9LXKFHfe6r7rOJbMN5jBOGkAnb99y4Byr+hArZbrQllfYpRClfOYAdIC/O4 35KRsL6LQgUePLu4rlAWHpuGts4vuQ91jGenJ27n+9avdSrWmZqHHjaWZQb+oqykUe cenKnu0qNdUgQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id C536BC41614; Sat, 6 Jun 2026 23:25:04 +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: Sat, 06 Jun 2026 23:25:04 +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: p@atiq.xyz 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 Solarized (p@atiq.xyz) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |p@atiq.xyz --- Comment #15 from Solarized (p@atiq.xyz) --- repros on kernel 7.0.9 on Asus ProArt 7606WV (has mediatek wireless chip) if you peak into kernel log using `journalctl` you will find this: ```plain Jun 06 13:19:30 kernel: cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: DSP1: cirrus/cs35l56-b0-dsp1-misc-10431e63-spkid1-amp1.bin (v1): v3.11.16 Jun 06 13:19:30 kernel: cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: DSP1: mis= c: C:\Users\gchen\Desktop\Asus_proj\CY24\MP\H7606W\240830\init\10431E63_240830= _V1_A0-init.bin Jun 06 13:19:30 kernel: Bluetooth: hci0: Failed to send wmt func ctrl (-22) Jun 06 13:19:30 kernel: Bluetooth: hci0: HCI Enhanced Setup Synchronous Connection command is advertised, but not supported. Jun 06 13:19:30 kernel: zram0: detected capacity change from 0 to 33554432 Jun 06 13:19:30 kernel: cs35l56-hda i2c-CSC3556:00-cs35l56-hda.1: Calibrati= on applied Jun 06 13:19:30 kernel: cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: Calibrati= on applied Jun 06 13:19:30 kernel: cs35l56-hda i2c-CSC3556:00-cs35l56-hda.1: Tuning PI= D: 0x531116, SID: 0x201104, TID: 0x3c8830 Jun 06 13:19:30 kernel: cs35l56-hda i2c-CSC3556:00-cs35l56-hda.0: Tuning PI= D: 0x531116, SID: 0x201004, TID: 0x3c8830 Jun 06 13:19:31 kernel: NVRM: testIfDsmSubFunctionEnabled: GPS ACPI DSM cal= led before _acpiDsmSupportedFuncCacheInit subfunction =3D 10. Jun 06 13:19:31 kernel: NVRM: testIfDsmSubFunctionEnabled: GPS ACPI DSM cal= led before _acpiDsmSupportedFuncCacheInit subfunction =3D 11. Jun 06 13:19:31 kernel: [drm] Initialized nvidia-drm 0.0.0 for 0000:64:00.0= on minor 1 ``` which indicates broken bluetooth mediatek driver. And, service log, shows following ```plain $ journalctl --boot --unit bluetooth.service Jun 06 13:19:29 systemd[1]: Starting bluetooth.service - Bluetooth service.= .. Jun 06 13:19:29 (uetoothd)[1329]: bluetooth.service: ConfigurationDirectory 'bluetooth' already exists but the mode is different. (File system: 755 ConfigurationDirectoryMode: 555) Jun 06 13:19:29 bluetoothd[1329]: Bluetooth daemon 5.72 Jun 06 13:19:29 bluetoothd[1329]: Starting SDP server Jun 06 13:19:29 bluetoothd[1329]: src/plugin.c:plugin_init() System does not support csip plugin Jun 06 13:19:29 bluetoothd[1329]: profiles/audio/micp.c:micp_init() D-Bus experimental not enabled Jun 06 13:19:29 bluetoothd[1329]: src/plugin.c:plugin_init() System does not support micp plugin Jun 06 13:19:29 bluetoothd[1329]: src/plugin.c:plugin_init() System does not support vcp plugin Jun 06 13:19:29 bluetoothd[1329]: src/plugin.c:plugin_init() System does not support mcp plugin Jun 06 13:19:29 bluetoothd[1329]: src/plugin.c:plugin_init() System does not support bass plugin Jun 06 13:19:29 bluetoothd[1329]: src/plugin.c:plugin_init() System does not support bap plugin Jun 06 13:19:29 bluetoothd[1329]: Bluetooth management interface 1.23 initialized Jun 06 13:19:29 systemd[1]: Started bluetooth.service - Bluetooth service. ``` Related: - https://lore.kernel.org/all/81bcf9fd-2f07-4fc6-be90-da4e448379e4@leemhuis.i= nfo/ - https://www.reddit.com/r/linuxhardware/comments/1tfn5ev/mediatek_mt7921_blu= etooth_not_initializing/ --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=