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 1D6FFC433FE for ; Wed, 12 Jan 2022 15:08:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 095DB10E276; Wed, 12 Jan 2022 15:08:54 +0000 (UTC) Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by gabe.freedesktop.org (Postfix) with ESMTPS id 650D510E276 for ; Wed, 12 Jan 2022 15:08:52 +0000 (UTC) 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 C457FB81F6B for ; Wed, 12 Jan 2022 15:08:50 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 74E86C36AE5 for ; Wed, 12 Jan 2022 15:08:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1642000129; bh=JTenDfZ/A73bGYmYWafgkP6/9aW5qIKzH/O/nhkvexI=; h=From:To:Subject:Date:In-Reply-To:References:From; b=jfCBF9A7DH3C9T/mjDHDnW+mHbGQ3/dfbrE17puf3sgDfPODOceNCezwLioaCyTdh IeL22l+mds5I/Gl3NYowLVNlIZoLHsN/rL+mNWeyNa/bsVS+8Fj0SkQloBFvfaAaxU H4pdfVMquV7GU8q4EJtO2As2rrwOIlhyp4GxLpdB5sXPs+27ahaRQ1u1xVQ6Z6oRio VhyoyxCVKJWyFPYKl5AZ/UgbxFcZLPnMal3CLxGWYEh1Ax2/mSJ2aCRY5xJr0JC/Mt 2cJPYrNh0Jz0xmVdmPTL5wuvPAeVV8WCbJsfdL4K798s5+vSKSoXIcNzUip/UwVgfr 4bUVRJnVIQlsA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 64F56CC13A8; Wed, 12 Jan 2022 15:08:49 +0000 (UTC) From: bugzilla-daemon@bugzilla.kernel.org To: dri-devel@lists.freedesktop.org Subject: [Bug 210263] brightness device returns ENXIO (?) on brightness restore at boot, with bootoption "quiet" Date: Wed, 12 Jan 2022 15:08:49 +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: ninelore@protonmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 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=3D210263 --- Comment #8 from ninelore@protonmail.com --- (In reply to Fabian from comment #5) > As of Kernel 5.15, I don't need fbcon=3Dnodefer anymore. By default the > backlight works and is set on start. I still get from time to time an > boot-error by systemd, but that can be also worked around by loading amdg= pu > early. >=20 > Can someone confirm this? (In reply to jaromir.obr from comment #6) > @Fabian > I have the same experience. I was running kernel 5.13 on Ubuntu 21.10 and > when I upgraded to mainline kernel 5.15.13 (using > https://github.com/pimlie/ubuntu-mainline-kernel.sh), the service > "systemd-backlight@backlight:amdgpu_bl0.service" starts as expected and > backlight seems to be restored. >=20 > With kernel 5.13 it failed: "Failed to start Load/Save Screen Backlight > Brightness of backlight:amdgpu_bl0" and I was not able to start it manual= ly. Can confirm this bug is fixed with 5.15 --=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.=