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 0FD5F346E7E for ; Wed, 10 Jun 2026 19:46:24 +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=1781120785; cv=none; b=m8FZJwZGyUETcb7wsrukeAhaF6r5fyGg2Npn+oXiuwsIhNhzHZAq4oY8cwiN2pY+Ne+j5l5vigYrh44bEtU75EypPlYpbFbxwahplLA85T2RjNeHAfhNV7hzkzw7+YhhrDQ4Wu40q06g4KOo4Bs0Y6xiQ/g8SO6dQu6+lSMkWPI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781120785; c=relaxed/simple; bh=k4a6XCrtFbXReq1KhVN74DEu6cu+lYkY/IJSe2Uq0Mo=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=PvU21bFhMtu/yuGGiz/pqIxJvaIlTUNTFC2GVr/AmE685RWIlasgX8X1lg7rbXXfWutDNdYogPKHqDSqmVucfzT8VwQFtO0RDtTH9Lcm8Na5COmoIMEeaBr6ZJVZPn1YXROoSkLN8BAJ3CT6l5v3rMhuwJ6/Sz+BAgAri7lorgs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Z9NG7GrK; 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="Z9NG7GrK" Received: by smtp.kernel.org (Postfix) with ESMTPS id CF6ECC2BCC7 for ; Wed, 10 Jun 2026 19:46:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1781120784; bh=k4a6XCrtFbXReq1KhVN74DEu6cu+lYkY/IJSe2Uq0Mo=; h=From:To:Subject:Date:From; b=Z9NG7GrKvfNtz7llIOLOdQKDN38/8CadegM/vzx19gRsoLYVK0SGfwlzm5otIohjI eTczsm+Xb1X1AsXIpJueKKZYEHMTkDmNDJZnRrLS5fCc4pcOniaUEoYpAvhjqAZjRX hAWw27S5/nJmgvvzMI/QnL5TufU+yV3sgCDJiEbssXDSP8tK5vGoxw+oX2LPS0PZ0N xbKkLoK297Ryh9hdAmZTZ0YXLIuCdDFKSjCrBNuUgXIOGrJd4D9Tw5i+DTg9We0Vc1 ECMpxa6yCvYLJ145dILFNorcGA/qD4MnSqnplSTBsQYeghyBUdYmcbgTTCDTpbkCkO mefPTOp5eYXCg== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id B21DDC41612; Wed, 10 Jun 2026 19:46:24 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-bluetooth@vger.kernel.org Subject: [Bug 221637] New: Regression for Intel Corporation Device a876 (rev 10) Date: Wed, 10 Jun 2026 19:46:24 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new 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: furstenau+kernelbugWGvWw1PW1l@posteo.net X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: linux-bluetooth@vger.kernel.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cf_regression Message-ID: 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=3D221637 Bug ID: 221637 Summary: Regression for Intel Corporation Device a876 (rev 10) Product: Drivers Version: 2.5 Hardware: All OS: Linux Status: NEW Severity: normal Priority: P3 Component: Bluetooth Assignee: linux-bluetooth@vger.kernel.org Reporter: furstenau+kernelbugWGvWw1PW1l@posteo.net Regression: No On my Dell Pro 14 Premium PA14250, the Bluetooth works with the firmware version 20260309, but it regressed to not-working in 20260410 and it has not been fixed as of 20260519. (Speculation: The firmware is crashing.) Via lsp= ci, the Bluetooth device is: 00:14.7 Bluetooth: Intel Corporation Device a876 (rev 10) Two sample outputs of dmesg (first working, second not-working, both on Nix= OS with the only configuration difference being the firmware override): Kernel 7.0.11, Firmware 20260309 $ sudo dmesg | grep -i bluetooth [ 13.782762] Bluetooth: Core ver 2.22 [ 13.782883] NET: Registered PF_BLUETOOTH protocol family [ 13.782884] Bluetooth: HCI device and connection manager initialized [ 13.782886] Bluetooth: HCI socket layer initialized [ 13.782888] Bluetooth: L2CAP socket layer initialized [ 13.782892] Bluetooth: SCO socket layer initialized [ 13.805444] Bluetooth: hci0: Device revision is 0 [ 13.805449] Bluetooth: hci0: Secure boot is enabled [ 13.805450] Bluetooth: hci0: OTP lock is disabled [ 13.805450] Bluetooth: hci0: API lock is enabled [ 13.805451] Bluetooth: hci0: Debug lock is disabled [ 13.805452] Bluetooth: hci0: Minimum firmware build 1 week 10 2014 [ 13.805453] Bluetooth: hci0: Bootloader timestamp 2023.33 buildtype 1 bu= ild 45995 [ 13.806042] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-iml.sfi [ 13.806046] Bluetooth: hci0: Boot Address: 0x30098800 [ 13.806046] Bluetooth: hci0: Firmware Version: 15-3.26 [ 13.860697] Bluetooth: hci0: Waiting for firmware download to complete [ 13.860704] Bluetooth: hci0: Firmware loaded in 53377 usecs [ 13.863006] Bluetooth: hci0: Waiting for device to boot [ 13.863023] Bluetooth: hci0: Device booted in 2254 usecs [ 13.863024] Bluetooth: hci0: Waiting for device transition to d0 [ 13.863025] Bluetooth: hci0: Device moved to D0 in 0 usecs [ 13.863191] Bluetooth: hci0: dsbr: enable: 0x01 value: 0x0b [ 13.866100] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-pci.sfi [ 13.866112] Bluetooth: hci0: Boot Address: 0x10000800 [ 13.866113] Bluetooth: hci0: Firmware Version: 15-3.26 [ 14.395735] Bluetooth: hci0: Waiting for firmware download to complete [ 14.395763] Bluetooth: hci0: Firmware loaded in 517244 usecs [ 14.433393] Bluetooth: hci0: Received gp1 mailbox interrupt [ 14.433452] Bluetooth: hci0: Waiting for device to boot [ 14.433861] Bluetooth: hci0: Device booted in 37190 usecs [ 14.433862] Bluetooth: hci0: Waiting for device transition to d0 [ 14.433980] Bluetooth: hci0: Device moved to D0 in 115 usecs [ 14.437701] Bluetooth: hci0: Found Intel DDC parameters: intel/ibt-0190-0291-pci.ddc [ 14.437877] Bluetooth: hci0: Applying Intel DDC parameters completed [ 14.438188] Bluetooth: hci0: Firmware timestamp 2026.3 buildtype 1 build 9743 [ 14.438190] Bluetooth: hci0: Firmware SHA1: 0xd68504ef [ 14.438460] Bluetooth: hci0: Fseq status: Success (0x00) [ 14.438463] Bluetooth: hci0: Fseq executed: 00.00.04.202 [ 14.438464] Bluetooth: hci0: Fseq BT Top: 00.00.04.202 [ 15.814470] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 15.814476] Bluetooth: BNEP socket layer initialized [ 15.815604] Bluetooth: MGMT ver 1.23 [ 28.005710] Bluetooth: RFCOMM TTY layer initialized [ 28.005717] Bluetooth: RFCOMM socket layer initialized [ 28.005719] Bluetooth: RFCOMM ver 1.11 Kernel 7.0.11, Firmware 20260519 $ sudo dmesg | grep -i bluetooth [ 11.552083] Bluetooth: Core ver 2.22 [ 11.552591] NET: Registered PF_BLUETOOTH protocol family [ 11.552593] Bluetooth: HCI device and connection manager initialized [ 11.552596] Bluetooth: HCI socket layer initialized [ 11.552598] Bluetooth: L2CAP socket layer initialized [ 11.552600] Bluetooth: SCO socket layer initialized [ 11.586234] Bluetooth: hci0: Device revision is 0 [ 11.586239] Bluetooth: hci0: Secure boot is enabled [ 11.586239] Bluetooth: hci0: OTP lock is disabled [ 11.586240] Bluetooth: hci0: API lock is enabled [ 11.586240] Bluetooth: hci0: Debug lock is disabled [ 11.586241] Bluetooth: hci0: Minimum firmware build 1 week 10 2014 [ 11.586242] Bluetooth: hci0: Bootloader timestamp 2023.33 buildtype 1 bu= ild 45995 [ 11.587640] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-iml.sfi [ 11.587646] Bluetooth: hci0: Boot Address: 0x30098800 [ 11.587646] Bluetooth: hci0: Firmware Version: 99-13.26 [ 11.647652] Bluetooth: hci0: Waiting for firmware download to complete [ 11.647659] Bluetooth: hci0: Firmware loaded in 58608 usecs [ 11.649893] Bluetooth: hci0: Waiting for device to boot [ 11.649927] Bluetooth: hci0: Device booted in 2205 usecs [ 11.649927] Bluetooth: hci0: Waiting for device transition to d0 [ 11.649928] Bluetooth: hci0: Device moved to D0 in 0 usecs [ 11.650058] Bluetooth: hci0: dsbr: enable: 0x01 value: 0x0b [ 11.653394] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-pci.sfi [ 11.653410] Bluetooth: hci0: Boot Address: 0x10000800 [ 11.653411] Bluetooth: hci0: Firmware Version: 99-13.26 [ 11.890541] Bluetooth: hci0: Received gp1 mailbox interrupt [ 11.891227] Bluetooth: hci0: Received gp1 mailbox interrupt [ 11.909517] Bluetooth: hci0: Received gp1 mailbox interrupt [ 11.932472] Bluetooth: hci0: Received gp1 mailbox interrupt [ 11.932823] Bluetooth: hci0: Received gp1 mailbox interrupt [ 11.937740] Bluetooth: hci0: Received gp1 mailbox interrupt [ 11.938063] Bluetooth: hci0: Received gp1 mailbox interrupt [ 12.229448] Bluetooth: hci0: Waiting for firmware download to complete [ 12.229468] Bluetooth: hci0: Firmware loaded in 562566 usecs [ 12.264949] Bluetooth: hci0: Received gp1 mailbox interrupt [ 12.264978] Bluetooth: hci0: Controller in error state [ 13.444947] Bluetooth: BNEP (Ethernet Emulation) ver 1.3 [ 13.444957] Bluetooth: BNEP socket layer initialized [ 15.238165] Bluetooth: hci0: Timeout (3000 ms) on alive interrupt, alive context: intel_reset1 [ 15.238170] Bluetooth: hci0: Failed to send frame (-62) [ 15.238171] Bluetooth: hci0: sending frame failed (-62) [ 15.238199] Bluetooth: hci0: Failed to send Intel Reset command [ 15.238208] Bluetooth: hci0: Intel Soft Reset failed (-62) [ 15.238211] Bluetooth: hci0: Firmware download retry count: 1 [ 15.277649] Bluetooth: hci0: Device revision is 0 [ 15.277650] Bluetooth: hci0: Secure boot is enabled [ 15.277651] Bluetooth: hci0: OTP lock is disabled [ 15.277651] Bluetooth: hci0: API lock is enabled [ 15.277652] Bluetooth: hci0: Debug lock is disabled [ 15.277652] Bluetooth: hci0: Minimum firmware build 1 week 10 2014 [ 15.277653] Bluetooth: hci0: Bootloader timestamp 2023.33 buildtype 1 bu= ild 45995 [ 15.277855] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-iml.sfi [ 15.277856] Bluetooth: hci0: Boot Address: 0x30098800 [ 15.277857] Bluetooth: hci0: Firmware Version: 99-13.26 [ 15.331235] Bluetooth: hci0: Waiting for firmware download to complete [ 15.331248] Bluetooth: hci0: Firmware loaded in 52141 usecs [ 15.333516] Bluetooth: hci0: Waiting for device to boot [ 15.333518] Bluetooth: hci0: Device booted in 2200 usecs [ 15.333519] Bluetooth: hci0: Waiting for device transition to d0 [ 15.333519] Bluetooth: hci0: Device moved to D0 in 0 usecs [ 15.333705] Bluetooth: hci0: dsbr: enable: 0x01 value: 0x0b [ 15.336014] Bluetooth: hci0: Found device firmware: intel/ibt-0190-0291-pci.sfi [ 15.336025] Bluetooth: hci0: Boot Address: 0x10000800 [ 15.336026] Bluetooth: hci0: Firmware Version: 99-13.26 [ 15.354944] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.381773] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.436473] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.437607] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.478120] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.479335] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.483759] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.487062] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.490408] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.500570] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.506638] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.506756] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.515964] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.517688] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.517933] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.532163] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.532282] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.635134] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.636578] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.636707] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.638224] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.638413] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.642802] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.643026] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.704576] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.704711] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.710823] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.734369] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.734563] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.753238] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.756902] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.757166] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.779988] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.780134] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.782630] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.782757] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.792866] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.952898] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.953061] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.956667] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.957829] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.957963] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.960131] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.960433] Bluetooth: hci0: Received gp1 mailbox interrupt [ 15.986218] Bluetooth: hci0: Waiting for firmware download to complete [ 15.986223] Bluetooth: hci0: Firmware loaded in 634965 usecs [ 16.021756] Bluetooth: hci0: Received gp1 mailbox interrupt [ 16.021778] Bluetooth: hci0: Controller in error state [ 19.013291] Bluetooth: hci0: Timeout (3000 ms) on alive interrupt, alive context: intel_reset1 [ 19.013304] Bluetooth: hci0: Failed to send frame (-62) [ 19.013307] Bluetooth: hci0: sending frame failed (-62) [ 19.013333] Bluetooth: hci0: Failed to send Intel Reset command [ 19.013359] Bluetooth: hci0: Intel Soft Reset failed (-62) Regression originally reported downstream: https://github.com/NixOS/nixpkgs/issues/530344 --=20 You may reply to this email to add a comment. 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