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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 55C83C55838 for ; Tue, 4 Aug 2026 11:23:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id B2F1410E143; Tue, 4 Aug 2026 11:23:54 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="gbGucMhq"; dkim-atps=neutral Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id A3B1710E143 for ; Tue, 4 Aug 2026 11:23:53 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 5E8C7401BE for ; Tue, 4 Aug 2026 11:23:53 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 3E873C2BCF4 for ; Tue, 4 Aug 2026 11:23:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1785842633; bh=79ZM1ljMQiVP9bZtc6Dq7n8DZtIcqmM6pCBuoT0FWx0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=gbGucMhqMgo+8CZx3hRryQS+TDvh6h7xf5+jPaiXx/4lQKp5io7BhjFhSdMKlEgys 4brjO1jA6f7EwnwPvNAj/b+vYBfdFHGOFmI/IYGmnywr+hJ7q5/xjQ0UpSGgEoGmya 5vAg+oWEQhPDww4c2fq3MDmdDnWpaOJhl96gdNm16pImC7fDWW4K0Ju2x+IZGRHjB8 cVqLhWDmRkGwgy6jSRAG42afPFBkz9anM2LhYRlS/WAq8gbWbNQzLS4fZBjKixjnHH PlQ9EdM9gaoduDEdsWlvv9DenMZMVG40Tz9rd2Nl95XFgGR3GDFDHEHRXymDQ5p70p Bb1OVDlNDLTCQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 19F42C41612; Tue, 4 Aug 2026 11:23:53 +0000 (UTC) From: bugzilla-daemon@kernel.org To: dri-devel@lists.freedesktop.org Subject: [Bug 221827] Backlight regression with 7.1.6 Date: Tue, 04 Aug 2026 11:23:52 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_video-dri@kernel-bugs.osdl.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: Video(DRI - non Intel) X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: rjgolo@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: drivers_video-dri@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 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" https://bugzilla.kernel.org/show_bug.cgi?id=3D221827 --- Comment #2 from Raymond Jay Golo (rjgolo@gmail.com) --- (In reply to The Linux kernel's regression tracker (Thorsten Leemhuis) from comment #1) > (In reply to Raymond Jay Golo from comment #0) > > Upon upgrading to 7.1.6, backlight at 100% is set to dimmest level. >=20 > @Mario, this is apparently caused by the following change of yours that w= as > backported to 7.1.y: f1b5d8f9cc54ae ("drm/amd/display: Fix backlight > max_brightness to match exported range") [v7.2-rc4, v7.1.6 (1191285ecb423= 3), > v6.18.42] >=20 > @Raymond: This might be a general problem or something specific to the > backport. Testing 7.2-rc6 or later is thus advised. You might also want to > attach dmesg files separately from a working and a broken kernel, as they > most likely will be helpful for debugging. I'll try compiling next weekend as I currently use this laptop for work. --=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.=