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 9EADB38239E for ; Sat, 6 Jun 2026 19:37:05 +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=1780774625; cv=none; b=U98ugA/ZjmB0ER7lcQ9GRYzr0cDEydNCEtYqJZoji14MkHK0QogBYly3x3q8nbG8NwvONs8YB2q0mP9VZ3eMj3zsE3KgAuZl32zNQDFFGE2yhbRsmS/J3SX4LI74G8jWYptn3RBnVlG6C7FYlc97dnkb4kbhzeB6RAOSEoRlK0E= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780774625; c=relaxed/simple; bh=mU273zKSH26JasxPYXs9nmNfs5TszQ2WCvlcC709pdo=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=qTTcvCJEQ3gyQZ2IjqwawxV+nGsTqPJhQrt51CakWVjdymPhWacwfOwG/DzCZLPxK6swOzaUI41+nWeqD2aiCUtDFquzAGrU/mBGI9fCTUl5I4oBy8+t2Bv666t9nijRYzy7ltiugYNGQH/9fbCQIaZVxYerrfQ5+8FUxTx/1uA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IG8k0YAQ; 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="IG8k0YAQ" Received: by smtp.kernel.org (Postfix) with ESMTPS id 53B78C2BCB0 for ; Sat, 6 Jun 2026 19:37:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1780774625; bh=mU273zKSH26JasxPYXs9nmNfs5TszQ2WCvlcC709pdo=; h=From:To:Subject:Date:In-Reply-To:References:From; b=IG8k0YAQw44eSEb753/UoOOhXPnNRbdjHNJxYxd9IF5rH8rzq8fRhCkCKvl5GlrPe tl66kXvRFRBWhbugaUAN95QjmQQ5mXOohi4laDei8VkVWtWDhmfle70CeE4MH+WxaR iu9xxbHMeqmu2LDjH1v7JTT+1B71jWUQ2My4jnK4JHRaUV99R62ergflcoPc55h3W3 skmqfdfUnSuhyT3UchT+X/iMlauwv8MHaU6rc0+ymqo00kGRgupWfBO9YHvv+pweFN 34p2rsde9M10Mm4M4BiRk85980MuGTkYUzvaF02x3gtnf4xwfU2AK5N+DTPZikp5as l/k6QeTwWjK8w== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 2EB15C41614; Sat, 6 Jun 2026 19:37:05 +0000 (UTC) From: bugzilla-daemon@kernel.org To: platform-driver-x86@vger.kernel.org Subject: [Bug 221583] Lenovo 82KU: keyboard backlight works via Fn+Space but no kbd_backlight LED device exposed Date: Sat, 06 Jun 2026 19:37:04 +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: george.stafilidis@proton.me 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=3D221583 --- Comment #35 from George (george.stafilidis@proton.me) --- Hi Rong, I ran the radical approach test for 0x8A, 0x8B, 0x8C, and 0x8D. None of them switched the brightness to High, and my screen backlight stayed on the whole time.=20 Since we couldn't find the High state, I would love to take your fallback offer. Please let me know if you need anything else. Thank you so much for = all your 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.=