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 595BA38946A for ; Tue, 5 May 2026 12:23:42 +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=1777983822; cv=none; b=AOTz9m+m8JtBS//JknLyy0pR4FoqgNlL93SSt+87otiSEEfJ++DRcNXNY30OAho0Qw+6CXyBc73Qoac4s7dSCMRF9zXdES1j2y2xuOOJliDpxcqV/FARNs3E4uqVArm833eh/lJrWdfJsNxtJEdgSyKi4KRNOh/TG2QagCyG528= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777983822; c=relaxed/simple; bh=c1cZQ9hyfMtG5zd+08P51YMKB6gTwCH4M/NyY4r8Zm4=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=RexhJn9cyG22I0SFUmXsxbRw+AO5SNE7+RUf+AYFoj4YaWTWdeykAOkHy/wKwE+8SfgMo4mJiRbfJH1h21YheWjifeTSPX3HOjH8XrZSicWXyegBEw2QhOmBneDe6ADSrzDt4hRAS5lA5XDvWCDDoj227a6o3I87hhK6k3hTxEo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=HNR39m3U; 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="HNR39m3U" Received: by smtp.kernel.org (Postfix) with ESMTPS id 03A33C2BCB9 for ; Tue, 5 May 2026 12:23:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777983822; bh=c1cZQ9hyfMtG5zd+08P51YMKB6gTwCH4M/NyY4r8Zm4=; h=From:To:Subject:Date:In-Reply-To:References:From; b=HNR39m3UV/PJQb+uoBKlvEQsE0jBF+lJ1QiA0VRrNONqfG+MKuJ/KBZw9As5qxcej P2aYliGI9evY+VkAKpgEI8ZwiNQ+W4Xt0eyFSa3xc8/JExVVo+fd77V2+f4PnLGEf3 kLtWMAhHgLaADTPZX0c5mmym6Q+exp5EyxyYefSKGtVjIFlaofubZuTzXWyzcdy+iH OmSNfAFd2rCJqa9xi6fHSCh1hhNrZA2JGNprQaMqpfjH8NrH0xBxemhiulVt9ZR18Y bUJq/cXV3LpPgAeffsbkGtRUtZrrdscfOykNxHxRZW6BpcbUd9ba8H/NfNkj64HVRu S2m7IMQENsTkw== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id E51E5C4160E; Tue, 5 May 2026 12:23:41 +0000 (UTC) From: bugzilla-daemon@kernel.org To: platform-driver-x86@vger.kernel.org Subject: [Bug 221430] nvidia_wmi_ec_backlight: brightness writes silently dropped on HP OMEN 16 (2025) Date: Tue, 05 May 2026 12:23:41 +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: hansg@kernel.org 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: 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: platform-driver-x86@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 https://bugzilla.kernel.org/show_bug.cgi?id=3D221430 Hans de Goede (hansg@kernel.org) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |hansg@kernel.org --- Comment #4 from Hans de Goede (hansg@kernel.org) --- Hi, thank you for your bug report. Problems like this with nvidia_wmi_ec backlight control are a known issue. = I've had a plan to properly fix this for a while now, but I don't have the time = to implement this. I've taken the time to write this down, see: https://lore.kernel.org/dri-devel/f10c039b-e9ef-4aae-8291-8f1e71074586@oss.= qualcomm.com/ In the mean time as a workaround can you try adding "acpi_backlight=3Dnativ= e" to your kernel commandline I suspect/hope that that will help. --=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.=