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 D0C0EC5DF8C for ; Fri, 21 Aug 2026 20:14:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id ED67310F3CC; Fri, 21 Aug 2026 20:14:54 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="hhplyznA"; dkim-atps=neutral Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0F29810F3CC for ; Fri, 21 Aug 2026 20:14:53 +0000 (UTC) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by tor.source.kernel.org (Postfix) with ESMTP id 0C36761126; Fri, 21 Aug 2026 20:14:45 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 89B621F000E9; Fri, 21 Aug 2026 20:14:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787343284; bh=GHeiAM/QKcU2aBrnp0t9lNI4f3+ZwJ9mz+89nspuk+I=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=hhplyznA3UDpf5jdid7g6Hkj9s4t7mNPF2WDMZjfm44r6KFLfMEvswcN0He+zpalC rUPYy1FYH9oY+xtYyYfPOaFffAopfDnrl0+5Z9cMuq8r2nOfgPUYClAG2L+E/LZESQ oSNFtcrRAlT45657ma1P0pwt/+JidVTxiDZCI7Vr38VBkjsh6WEBbT/ftE7UthbY3d J1hakqaw8j1GWG1edd8NdayHUlevEDFG0rH4gH7myJ16PoZUbwVknAkEskld1mRMfl 7q1OgRNFLriN6SydpN1e1iy+HSmBmuSk1Iap0IdyLzOMqXh+tMV8zT3xWq6Wa4jpH0 mNlVmtKYcbMdg== From: sashiko-bot@kernel.org Subject: Re: [PATCH v2] pci: Add broken-GPE quirk for Lenovo Legion 16APH8 and 16AHP9 Nvidia GPUs To: "Lyude Paul" Cc: linux-pci@vger.kernel.org, dri-devel@lists.freedesktop.org In-Reply-To: <20260821200607.621341-1-lyude@redhat.com> References: <20260821200607.621341-1-lyude@redhat.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Fri, 21 Aug 2026 20:14:44 +0000 Message-Id: <20260821201444.89B621F000E9@smtp.kernel.org> 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: , Reply-To: sashiko-reviews@lists.linux.dev Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" > On the Lenovo Legion Slim 5 16APH8 and 16AHP9, the firmware appears to en= joy > firing a GPE on the parent PCIe port of the nvidia GPU very shortly after= the > GPU enters D3Cold. This means that every time the GPU is runtime suspende= d, > ACPI firmware immediately wakes up its parent PCIe port, which then wakes= up > the GPU. Once it falls asleep again, the cycle repeats. >=20 > See: https://github.com/NVIDIA/open-gpu-kernel-modules/issues/905 >=20 > Note, this bug doesn't require Nvidia's driver. It happens on nouveau and > nova as well, and it even seems possible for this to happen without any > driver loaded. >=20 > This seems to simply be a bug. Luckily, there is nothing that we actually > need ACPI wakeup events for on the GPU. Events such as display connector > hotplug events in D3Cold come through as ACPI_VIDEO events which aren't > affected by this quirk. >=20 > Reported-by: Ryan Brue > Co-authored-by: Ryan Brue > Signed-off-by: Lyude Paul Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260821200607.6213= 41-1-lyude@redhat.com?part=3D1