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 A035D3AB291 for ; Wed, 27 May 2026 19:47:28 +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=1779911248; cv=none; b=n9dPe31eFx3K3cBfrqjPorcmUNTpYzLbJjl2zHqBciwukbB7hbsdiI0OpfQU9DzE321563Wn0MqKVEp+YMso8v90mp/ZrYlC9lrJ4qinIjlR5qQHNLRp41FWpxv9jzNZyXIQdkXqXu4MqvQFounpfcKjH1cQ1oqXGMygkJLz9Bc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779911248; c=relaxed/simple; bh=1iRM16fioHiUHoDdnsLlLfeRN7TXLfIMdCAeA4s8KxE=; h=From:To:Subject:Date:Message-ID:Content-Type:MIME-Version; b=irzqMKceoAM8Q63/XW/Ns/HuLAUDmuLLr/zRX0SZkzNxc4lpDgJDdSCrzBex9Pxk9SXs6n5oVypqmsolMQadMxLYIiVO/yY5dSVteuHinV6LzDzkRyBCIfwlLbQ9JXkpPQaWmFH35poGLO+BfX88WpWXR+Q+gPaAJvmbGqPIj+w= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=pLCfZgnD; 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="pLCfZgnD" Received: by smtp.kernel.org (Postfix) with ESMTPS id 361D5C2BCB8 for ; Wed, 27 May 2026 19:47:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779911248; bh=1iRM16fioHiUHoDdnsLlLfeRN7TXLfIMdCAeA4s8KxE=; h=From:To:Subject:Date:From; b=pLCfZgnD2iSaOTJeEBqzitN0KL16L+aG+1TtW3aM3VE/png9kSKu41dMy9X/BoIvm CKo/GN++9RnPAqr57YEaL7/ZHwNuzpnhxA5RqgtwO1S8u0BDKbE2OJRZkp0FDDE6UK HKUrlY8k2iVaeff++VkDP7hqCGdUkM9sJAW4g6be0IuR7mQiijFLCsVfYNZQjoKcXP jjeFfZBla4Lf4wzWmpLjS/nxdQyf2diHt0Ei8Bg/HzqU+yJdh3774MXambxP7P5i/F RNbkZdqV8tV5ODbVK0JM1cD60qWnt9U1Dxf6KNnDi2ISpwpE7Bby+78YI0GYQafkc0 iCcmmZhb4847Q== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 1C8FDC433E1; Wed, 27 May 2026 19:47:28 +0000 (UTC) From: bugzilla-daemon@kernel.org To: platform-driver-x86@vger.kernel.org Subject: [Bug 221583] New: Lenovo 82KU: keyboard backlight works via Fn+Space but no kbd_backlight LED device exposed Date: Wed, 27 May 2026 19:47:27 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new 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: 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: 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 Bug ID: 221583 Summary: Lenovo 82KU: keyboard backlight works via Fn+Space but no kbd_backlight LED device exposed Product: Drivers Version: 2.5 Hardware: All OS: Linux Status: NEW Severity: normal Priority: P3 Component: Platform_x86 Assignee: drivers_platform_x86@kernel-bugs.osdl.org Reporter: george.stafilidis@proton.me Regression: No Laptop: Lenovo 82KU Distribution: Fedora Kernel: (paste output of uname -r) Problem: Keyboard backlight works correctly using Fn+Space (Off -> Low -> High), but Linux exposes no keyboard backlight LED interface. No device appears under: /sys/class/leds/ Expected behavior: A standard LED interface such as: platform::kbd_backlight or ideapad::kbd_backlight Current result: GNOME cannot expose keyboard backlight controls because no LED device exists. Tested: * modprobe ideapad_laptop * reboot * latest Fedora updates Outputs: $ ls /sys/class/leds/ input18::capslock input18::numlock input18::scrolllock input3::capslock input3::numlock input3::scrolllock platform::fnlock $ sudo dmidecode -s system-manufacturer LENOVO $ sudo dmidecode -s system-product-name 82KU $ uname -r 7.0.10-200.fc44.x86_64 --=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.=