From patchwork Fri Nov 13 04:47:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kai-Heng Feng X-Patchwork-Id: 1399543 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (no SPF record) smtp.mailfrom=lists.ubuntu.com (client-ip=91.189.94.19; helo=huckleberry.canonical.com; envelope-from=kernel-team-bounces@lists.ubuntu.com; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=canonical.com Received: from huckleberry.canonical.com (huckleberry.canonical.com [91.189.94.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 4CXQv70wF8z9sVK; Fri, 13 Nov 2020 15:47:45 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1kdQzq-0004oW-1H; Fri, 13 Nov 2020 04:47:38 +0000 Received: from youngberry.canonical.com ([91.189.89.112]) by huckleberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1kdQzo-0004oQ-Dd for kernel-team@lists.ubuntu.com; Fri, 13 Nov 2020 04:47:36 +0000 Received: from 61-220-137-34.hinet-ip.hinet.net ([61.220.137.34] helo=localhost) by youngberry.canonical.com with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1kdQzn-0007hF-Iu for kernel-team@lists.ubuntu.com; Fri, 13 Nov 2020 04:47:36 +0000 From: Kai-Heng Feng To: kernel-team@lists.ubuntu.com Subject: [SRU] [Groovy] [PATCH 0/1] Fix noise lines on i915 + Xorg Date: Fri, 13 Nov 2020 12:47:30 +0800 Message-Id: <20201113044731.570886-1-kai.heng.feng@canonical.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 X-BeenThere: kernel-team@lists.ubuntu.com X-Mailman-Version: 2.1.20 Precedence: list List-Id: Kernel team discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kernel-team-bounces@lists.ubuntu.com Sender: "kernel-team" BugLink: https://bugs.launchpad.net/bugs/1896091 [Impact] Noise-like lines of graphics corruption when moving windows in Xorg sessions. [Fix] Revert "UBUNTU: SAUCE: drm/i915: Synchronize active and retire callbacks". [Test] Daniel van Vugt confirmed reverting the commit fixes the issue. I can also reproduce the issue on one of my system, I can confirm it fixes the issue too. [Where problems could occur] Race condition the commit solves may appear again. However it was to solve the issue on 5.4, and the race could already be solved on 5.8. Kai-Heng Feng (1): Revert "UBUNTU: SAUCE: drm/i915: Synchronize active and retire callbacks" drivers/gpu/drm/i915/i915_active.c | 52 ++++-------------------- drivers/gpu/drm/i915/i915_active.h | 10 +++-- drivers/gpu/drm/i915/i915_active_types.h | 2 - 3 files changed, 14 insertions(+), 50 deletions(-)