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 69A0F7262E for ; Thu, 17 Jul 2025 10:45:39 +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=1752749140; cv=none; b=lnHk6HF0g/SGAEOiNqxhG/R2XmK6qlSV0TrAOHZZ2x+pPFFNvMAzgUbl/z/t0rBUfaaHrS4+h6Okam72BoUKh42+TMwiC7kt6T0b2icyPGBY8n7TQBXs5iNUPVyx+AezffuKMXHsye4EYSS6QdO79e53rADDQ+kELMU2NKNj2zk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752749140; c=relaxed/simple; bh=bcMN6VpF0Vnjv7TNqxnH9px4A82fDOLja7XJOi9yNVQ=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=ABMIP3dKqoNgrGv+qbcxcZAkEbyNefuKsiUsOQ6ZfT3kHK/YzbLUZX2McvK/a2XPUq8B3N1uIPjlS9BFBmp1c4pH7SEvrVQdrOodkvaJ6M+LBpggYbiom4GiEa75VeyEKn0VdINaO9UReOlY8aog0xxNzRp830lkYzG3CiqUEO8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=eHQ3CPGX; 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="eHQ3CPGX" Received: by smtp.kernel.org (Postfix) with ESMTPS id EA880C4CEE3 for ; Thu, 17 Jul 2025 10:45:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752749139; bh=bcMN6VpF0Vnjv7TNqxnH9px4A82fDOLja7XJOi9yNVQ=; h=From:To:Subject:Date:From; b=eHQ3CPGX+rYIWcHGHtEuiEhiAqD6qR6Xap5ljfOh1kna2EW31u/zSzP9udBxFaqec Lo5q9Rj1RMh18dhudG0VNu8lxAvCJ6wCetFgK/02HBVOucdON4IMSWviaGKKz4BNS9 DTPyKfyMgBOe8r0v7QsYDZtxjmbbz0RM1IGIY8L1GH5cA7G9Xo/iKZI0iWfYQGjpGI 4jrVtpRy9/SQBb52BRaQ3jQZz0pdGDa6Zl3Jkf5UKzXeHxEM76HdCozcRNCUqK+CzP zj2Dgh/wgQqEnM940ff6qGXW/jOYnkE6HnJ/d55wrYVsNfUdR3yL7SRuFJ006fBGHR tHa6gJlbbAG3g== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id D6F0DC433E1; Thu, 17 Jul 2025 10:45:38 +0000 (UTC) From: bugzilla-daemon@kernel.org To: linux-bluetooth@vger.kernel.org Subject: [Bug 220344] New: Intel AX211 bluetooth randomly disconnects and reconnects, started after kernel update Date: Thu, 17 Jul 2025 10:45:38 +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: tal.lich@gmail.com 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=3D220344 Bug ID: 220344 Summary: Intel AX211 bluetooth randomly disconnects and reconnects, started after kernel update Product: Drivers Version: 2.5 Hardware: Intel OS: Linux Status: NEW Severity: normal Priority: P3 Component: Bluetooth Assignee: linux-bluetooth@vger.kernel.org Reporter: tal.lich@gmail.com Regression: No Bluetooth devices disconnect every few minutes. Tried same devices with ano= ther laptop with same hardware but Windows OS - works fine. So this is not the devices or the Bluetooth hardware. Every time the disconnect happens, dmesg shows: Jul 16 13:47:24 licht-t14s kernel: Bluetooth: hci0: Retrieving Intel except= ion info failed (-16) Jul 16 13:47:24 licht-t14s kernel: Bluetooth: hci0: Hardware error 0x0c I have tried: - Downloading the newest firmware file from linux-firmware (file ibt-0040-0041.{sfi/ddc} - Setting the following options in /etc/modprobe.d # Disable power saving in both iwlmvm and iwlwifi options iwlmvm power_scheme=3D1 options iwlwifi power_save=3D0 # Disable bluetooth coexistence to avoid BT issues options iwlwifi bt_coex_active=3D0 I have read on Ubuntu's forum (here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2051720) that this may= be a regression in kernel 6.5 but I'm on a newer kernel Hardware info: System : Lenovo Thinkpad T14s Gen4 model 21F60051IV BIOS : N3PET23W (1.14) Adapter : Intel AX211 Firmware: 133-20.25 OS info: Kernel : Linux licht-t14s 6.8.0-60-generic #63~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Tue Apr 22 19:00:15 UTC 2 x86_64 x86_64 x86_64 GNU/Linux Distro : Ubuntu 22.04.05 --=20 You may reply to this email to add a comment. You are receiving this mail because: You are the assignee for the bug.=