From patchwork Wed Aug 28 07:42:16 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: You-Sheng Yang X-Patchwork-Id: 1154275 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) 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 46JHl814Nzz9sNF; Wed, 28 Aug 2019 17:42:28 +1000 (AEST) Received: from localhost ([127.0.0.1] helo=huckleberry.canonical.com) by huckleberry.canonical.com with esmtp (Exim 4.86_2) (envelope-from ) id 1i2sb2-0008MM-QC; Wed, 28 Aug 2019 07:42:24 +0000 Received: from mail-pf1-f196.google.com ([209.85.210.196]) by huckleberry.canonical.com with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.86_2) (envelope-from ) id 1i2sb1-0008ME-CE for kernel-team@lists.ubuntu.com; Wed, 28 Aug 2019 07:42:23 +0000 Received: by mail-pf1-f196.google.com with SMTP id y200so1154879pfb.6 for ; Wed, 28 Aug 2019 00:42:23 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version :content-transfer-encoding; bh=3TsIiFYwI6XwieeMpLD8qrrRsRAHETsrvmY8qmYwCzU=; b=eAFoUUa39fByzEU8LQR+alBhCGWHamHIZZzGqII+xIH+obA1hILILeP4W0Wz+jm2ZS wy1D+AKQGySSSK7m8lbOEKLcr51JA4N0Ud0bihiELUp1bPcPGV2wSmcRrqxL5ktMTThR PQK1RYvstiLIGtb7fj4uP8hzDY3vmOr1NfyXxV8809P4s6+rtZrY+dpkW41Wcy+JBU3m Gap9Vmw2LwQUr5XSaoaM1wEZ+Dg6aZtvUsQ/8dqML+eK1wXu5gzKWX/RQ40AKeh+FVQH oT0i9hnfjTZ71LURVT+iVBZMfCXcDd/vsa+feBZvWnM/h+3sV4YD2TIzp+1Fv2smdE7G 0oWw== X-Gm-Message-State: APjAAAWYvx4q/WnklipzZorx50O6RIP2Oz1ajcRroyAFuYhG/UZXuHHN mv/HE+y+qyPay0DzR2dKeM+fMt9R X-Google-Smtp-Source: APXvYqwgmy5MEsz//K7s6h1FTTX0ygTqMuVQkA0EdwRSXjdi9vT7nvUqsQuR0jWSpWNy9BNn+nvWhg== X-Received: by 2002:a65:52c5:: with SMTP id z5mr2321110pgp.118.1566978141269; Wed, 28 Aug 2019 00:42:21 -0700 (PDT) Received: from localhost.localdomain (61-220-137-37.HINET-IP.hinet.net. [61.220.137.37]) by smtp.gmail.com with ESMTPSA id 1sm1828477pfy.169.2019.08.28.00.42.19 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 28 Aug 2019 00:42:20 -0700 (PDT) From: You-Sheng Yang To: kernel-team@lists.ubuntu.com Subject: [PATCH 0/2][SRU][OEM-OSP1-B] drm/i915/fbc: disable framebuffer compression on IceLake Date: Wed, 28 Aug 2019 15:42:16 +0800 Message-Id: <20190828074218.15518-1-vicamo.yang@canonical.com> X-Mailer: git-send-email 2.23.0 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/ubuntu/bug/1840236 [Impact] On IceLake platforms there might be a thin, horizon strap of corruption image at the top of screen randomly after some series of window operations and disappears within a second or so. This is found on multiple platforms and is quite annonying that results in bad user experience. [Fix] The upstream bug has been filed for previous platforms, e.g. GeminiLake for an year or so, still working in progress, and so far this only known work-around is to turn off framebuffer compression on affected platforms. [Test Case] The most easy way is to observe if such corruption appears during the transition from GDM to gnome-shell. [Regression Risk] Low. The work-around for GeminiLake was landed to Linux stable 4.14.125 and has been backported to B/D. Daniel Drake (1): drm/i915/fbc: disable framebuffer compression on GeminiLake You-Sheng Yang (1): UBUNTU: SAUCE: drm/i915/fbc: disable framebuffer compression on IceLake drivers/gpu/drm/i915/intel_fbc.c | 5 +++++ 1 file changed, 5 insertions(+)