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 9CCD4207DF7 for ; Fri, 9 Oct 2026 14:14:29 +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=1791555269; cv=none; b=JqvMnZiueP6BvK0dZoD2SERIb+WWHirGbfbNrg7Uyp82TbFDexsQMxdgXIXvCc8VGbxUnHavRC8oirYJgSxGFPmIceocKtpVH8th57gu7KeVbojsviVtUdLBLtN5d2BNiHtXuIhzv8t/uBZIauLKruYhLKZ4Fs492UsniDSGVlg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791555269; c=relaxed/simple; bh=aHLUwg7lYDqPbHZjMYrG7c1zWUEU1+wq5Sspik6MmbE=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=AHhCBJ+fgQQ12ar2+YgK8YILTPVkF235Y/yHgeIW0YbA26JBq12S2pky2scO4TT96ck/QtKy+hGOjHUXorCPdUvkbQXhKcc94fTt4tGGHYhXt/t/Si89WwZiZMU6JNiDtRhk2Qi41ldXTl/0jeFJr3e+Zs10/juLiFkJzW8XOPY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IzBSkTOM; 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="IzBSkTOM" Received: by smtp.kernel.org (Postfix) with ESMTPS id E7122C2BCFA for ; Fri, 9 Oct 2026 14:14:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1791555268; bh=aHLUwg7lYDqPbHZjMYrG7c1zWUEU1+wq5Sspik6MmbE=; h=From:To:Subject:Date:In-Reply-To:References:From; b=IzBSkTOMiX0LpWqegZdPPP58MKNjM4b+b00h/g5JWfzZWnd6yYFOpsmHSI+HKy2ua C+fLHJrKT62H6dC1vWqp3IusolstleibEZjrnpHsTEpSoYAmPDbcci98aWPIgDAxbc WWTG/O0grOmXWl/2eiCtMWUSWg636GC+NXVnJCYXeD31r8e+3eYdqA3YP6CUKlFlju sbbQcpbLOPyCpYk3CuzgRVOKPzVgzlpO+zOMw7mPMX8ZgSW8eQgWjzdwLNoCu611tp jW9RJ+Dtzua/EKgzeN28xQQS/Jr09NpY2qz+e4Z3ppLvL0hkcFqKQ2Zyi6ODj4kb4f HQ03wFF86Dw2Q== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id C42E3C41616; Fri, 9 Oct 2026 14:14:28 +0000 (UTC) From: bugzilla-daemon@kernel.org To: platform-driver-x86@vger.kernel.org Subject: [Bug 222107] hp-wmi: fan1_input and fan2_input always 0 on OmniBook 7 17-dc (8D9C) Date: Fri, 09 Oct 2026 14:14:28 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_platform_x86@kernel-bugs.osdl.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: Platform_x86 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: krishna.chomal108@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: drivers_platform_x86@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: 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: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D222107 --- Comment #2 from Krishna Chomal (krishna.chomal108@gmail.com) --- Hi Jae, I took a look at your ACPI tables, and they seem consistent with your findi= ngs. The relevant HP WMI methods appear to be stub implementations, which would explain why the fan-related queries return PASS with a zero payload. This suggests that the issue is likely on the firmware side rather than a Linux-specific problem. If the firmware does not implement these methods, hp-wmi has no meaningful fan-speed data to retrieve through this interface.= If I am not wrong, HP's official software on Windows would also not support fan read/control behaviour. For now, it looks like relying on acpi_fan is the best option. Proper suppo= rt through hp-wmi would likely require a firmware update from HP that implemen= ts the relevant WMI methods. Sorry I don't have a better solution! --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=