From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 14DBAC433EF for ; Mon, 11 Apr 2022 14:06:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242311AbiDKOIa (ORCPT ); Mon, 11 Apr 2022 10:08:30 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53488 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1346942AbiDKOI2 (ORCPT ); Mon, 11 Apr 2022 10:08:28 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0BA04329B6 for ; Mon, 11 Apr 2022 07:06:13 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id AF734B8160D for ; Mon, 11 Apr 2022 14:06:11 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 5E8EAC385A4 for ; Mon, 11 Apr 2022 14:06:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1649685970; bh=+SYYRwK1aZ/58oOmn6X/rajJvW9q9vkjVsdC1u+GdcI=; h=From:To:Subject:Date:In-Reply-To:References:From; b=JBokAwzE+rfVPeTsCskNindFDzVgdayOI9LGrCh00wwofjaMOYGgb+0uuxWGGTzL5 PF5/Ha8FQD+dcozoj3xE8DJ7K331cwi8zPLtOKI8Wfgg22STXVmqgXHjvDFformthc AsYDapt5dR8J28SgMGHw4QY8Tz93NOe41nCbtnLnTmynHc7bJvCqAXfqm6L87uCBE/ hxP3WSuUnuYauio7+f2l2ycfswnsYsBk7dMDtUeJD0CHb8WTu2PxxtAzcWgSr0+VfI s2GAXgu6sbgq/XhgyEExGTPG/2+T1A/kb59ron1pakc+UHp7oUm3MkjT/QVgH6uB6I YlDG+qSBx0UbA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 42178C05FD2; Mon, 11 Apr 2022 14:06:10 +0000 (UTC) From: bugzilla-daemon@kernel.org To: platform-driver-x86@vger.kernel.org Subject: [Bug 215825] Dell Precision 7750 - can't change keyboard backlight timeout and brightness Date: Mon, 11 Apr 2022 14:06:10 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_platform_x86@kernel-bugs.osdl.org X-Bugzilla-Product: Platform Specific/Hardware X-Bugzilla-Component: x86-64 X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jwrdegoede@fedoraproject.org X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 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 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: platform-driver-x86@vger.kernel.org https://bugzilla.kernel.org/show_bug.cgi?id=3D215825 Hans de Goede (jwrdegoede@fedoraproject.org) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jwrdegoede@fedoraproject.or | |g --- Comment #1 from Hans de Goede (jwrdegoede@fedoraproject.org) --- Error -5 is -EIO which means that the firmware interface for this is not behaving as expected on the Dell Precision 7750, likely something has chang= ed in newer Dell laptops. I'm afraid that there is not much we can do here, unless someone figures out how kbd backlight control works on these newer devices. One thing which you could try is to reach out to Dell themselves and ask if they can help. Typically Dell is supportive of running Linux on professional laptops like = this model. You could e.g. try emailing Dell.Client.Kernel@dell.com --=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.=