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 942B73B42F3 for ; Sat, 6 Jun 2026 20:58:44 +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=1780779524; cv=none; b=EcAXOYovvkOyjST57k0t0vxzoT4lnguYqzAusaeT0si0m7KwZ6fLQn6PL8e1YbrBUYu+KiHGeXnOVmNlLmf4sNllIcYFHYRlBVnM2FVa2JTGcEU3EsnuV0Xs52BoCVSROMquPTFcImRquJg+U4tzBcsG1mrTltKsB9YAr1HCoP8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780779524; c=relaxed/simple; bh=29kiwg3RpOnXua6b/yz6OWVW004n+UtztYs+/RG7uOY=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: Content-Type:MIME-Version; b=n0x4F3SSo1X1VpNMkVXL5ItsrMTts9rTwkBIVo5PiqF6FAYQ5drxQ0LAdPGtK/m6j8E67TULt5CSfsF7ZvW+esQ5hfkdplKmJyWVLoEBtLgrbCEpZMcPyiy+6iaMdNOJuAx/ogDWEN+lZ12V3eih2D1k6JLdwjXbnQDq+ECPQdg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=h96CE4Eg; 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="h96CE4Eg" Received: by smtp.kernel.org (Postfix) with ESMTPS id 3BEAEC2BCC7 for ; Sat, 6 Jun 2026 20:58:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1780779524; bh=29kiwg3RpOnXua6b/yz6OWVW004n+UtztYs+/RG7uOY=; h=From:To:Subject:Date:In-Reply-To:References:From; b=h96CE4EgPNC6NdX0z4qVyrBUaG2k5f17eC2VfJNdoErBOKirR+gsCU6yah2mF0LDC q7qd2vIiEhPZHaRyLJiJvJ6Ff8Kp0dvl/pu6LJZvWWCInlw7YkFNgQzMCRhM1g1Qh1 tdRe01SB3fStohQwdAzjhllxqx2GOeHF/GGjye4XOk580u6dKgiQArAAWRjLpdwCxH 4FFkUnoWUUunwBnBBNHfB8pDQKGaoknBrQRA9RoT8VBxoV03Hz42pkRn+EqYndWeXf /5GN0hIylx9uoWWXM67Ar2AuKPrS3nbESMtV/5Hu1QrGVGc6aLbaPaHe9x3rtxz4z+ xWhvUEfgZbsTQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 1AA8FC41613; Sat, 6 Jun 2026 20:58:44 +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 20:58:43 +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: i@rong.moe 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: attachments.isobsolete attachments.created 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 Rong Zhang (i@rong.moe) changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #310266|0 |1 is obsolete| | --- Comment #36 from Rong Zhang (i@rong.moe) --- Created attachment 310278 --> https://bugzilla.kernel.org/attachment.cgi?id=3D310278&action=3Dedit DSDT patch (2nd attempt) Hi George, This DSDT patch should allow you to switch between Off and Low using softwa= re and get OSD working for all three states. Software will not prevent you from switching to High anyway, but the hardwa= re brightness will be Low. --=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.=