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 3AAE015E97 for ; Sat, 20 Jun 2026 13:07:49 +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=1781960870; cv=none; b=q62ajuDYSPtzQwrsdfmaRlKbuNpFZxF57ELy1pa/QTkq+rrm7wmoIPC266INik3pjKtkxni5pKcYxf2tPs/AmIbdcEsC3xAmWKqlBeZmx7RXgmpVH/qONxOeP91eOGbYS45bb272chtwPQT+ZhYxEP8kZvZoaAcic/mPTJ0H09U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1781960870; c=relaxed/simple; bh=mRfT0rJAxrWkba0aveqZBMgQ/g+o/37bM67WZIzfM/c=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=dFDpBJvKebqHJ/thNrLA87ijjsyf+C70NhuGVXjpLD6fO2GCcSUTEp/ZKRk4etksh2oxDan/6R5TEAzOH2l6u5tNLEA0wGttdxZLY5A1WOp4msIefGYYyPWrNJX/0eWgUKrtKWsrB5N8QNeJXyCiFUIIvkqX6caNysSwcT4OwBc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=gPJkednG; 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="gPJkednG" Received: by smtp.kernel.org (Postfix) with ESMTPS id CFFF6C2BCB0 for ; Sat, 20 Jun 2026 13:07:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1781960869; bh=mRfT0rJAxrWkba0aveqZBMgQ/g+o/37bM67WZIzfM/c=; h=From:To:Subject:Date:In-Reply-To:References:From; b=gPJkednGIKvolglv+7cnD/6FLEMkpPJRD2+cUa0sgDpEPyUunLax3bO/6qOjTx8sm LkWoAeemf34squKvzj9nCL/z1r9tUGbT3UBKohI7NTteuti1YYOM1MJvg9/CK3q/4w xhfPku1t1h9HyIz6ca1xp2fCSzIPsO5td9+bwZyWjbqCajJQndeZJg47D4VUK39Eg1 /jxxweLeMnRj0ygy6JrKYjSMJ3RIQJY3mOVB8LekOyc0JnQQXRMshg36K15A75JWV1 ILN3vKnJiXDKuKrLsNzQs32UZbu94ZKpw71GPLBG9usAKIm0vaBAvmhOUc3Vqo4piV fwQo4Ean5lXSA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id C922AC41612; Sat, 20 Jun 2026 13:07:49 +0000 (UTC) From: bugzilla-daemon@kernel.org To: platform-driver-x86@vger.kernel.org Subject: [Bug 221569] Laptop fan too loud (spinning nearly always) hp-wmi 7.1-rc4 kerenel Date: Sat, 20 Jun 2026 13:07:49 +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: scardracs@disroot.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Resolution: UNREPRODUCIBLE 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=3D221569 --- Comment #43 from Marco Scardovi (scardracs@disroot.org) --- Since all your temperatures are now very low (CPU at 39.9=C2=B0C, WiFi at 4= 9=C2=B0C, NVMe at 37.9=C2=B0C, GPU at 38=C2=B0C) but the fan is still spinning at 2100 RPM= , there are two likely explanations I can think of: 1. HP BIOS "Fan Always On" Setting [1]: HP laptops commonly have a BIOS opt= ion called "Fan Always On" (usually under System Configuration or Power setting= s). When enabled (which is often the default, especially when plugged into AC power), the motherboard firmware will keep the fan spinning constantly, eve= n if the laptop is freezing cold. It will only ramp up when hot, but will never stop. 2. BIOS Thermal Hysteresis: Firmwares use a cooling hysteresis window to prevent the fan from constantly pulsing on and off. For example, the fan mi= ght trigger at 55=C2=B0C but will only turn off once the system cools down belo= w 35=C2=B0C or 30=C2=B0C. If your idle baseline is around 37-40=C2=B0C, it might stay just= above the cutoff threshold. [1] https://h30434.www3.hp.com/t5/Notebook-Software-and-How-To-Questions/quot-f= an-always-on-quot-in-bios/td-p/8924322 --=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.=