Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933089AbcKGRho convert rfc822-to-8bit (ORCPT ); Mon, 7 Nov 2016 12:37:44 -0500 Received: from mga14.intel.com ([192.55.52.115]:24373 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933043AbcKGRhR (ORCPT ); Mon, 7 Nov 2016 12:37:17 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,606,1473145200"; d="scan'208";a="783505439" From: Jani Nikula To: Martin Kepplinger , Martin Steigerwald Cc: Thorsten Leemhuis , Joerg Roedel , Linux kernel , torvalds@linux-foundation.org, daniel.vetter@intel.com Subject: Re: [BUG][REGRESSION] mangled display since -rc1 In-Reply-To: <0e7529fa-6f48-fc31-8d25-18a836171d8c@posteo.de> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <87zilb8zp9.fsf@intel.com> <1950398.JsbNW0lAGz@merkaba> <0e7529fa-6f48-fc31-8d25-18a836171d8c@posteo.de> Date: Mon, 07 Nov 2016 19:36:53 +0200 Message-ID: <87h97j8a4q.fsf@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1935 Lines: 55 On Mon, 07 Nov 2016, Martin Kepplinger wrote: > Am 2016-11-07 um 17:01 schrieb Martin Steigerwald: >> Hello. >> >> Am Montag, 7. November 2016, 16:34:35 CET schrieb Martin Kepplinger: >>> Chris Clayton wrote off list and the mentioned patch fixes the problem >>> for me too, as it does for others. I hope it make it's way into the tree >>> soon: >> >> With 4.9-rc4 I have corruptions that look like the ones reported in this >> thread. >> >> I reported my finding on LKML thread about 3.9-rc4. And in Bugzilla in a bug >> report with an attachment that shows the same type of corruptions as here in >> this thread: >> >> https://patchwork.freedesktop.org/patch/116808/ >> >> mentioned in the other bug report and the following LKML thread does not fix >> the issue for me: >> >> Re: [REGRESSION] Linux 4.9-rc4: gfx glitches on Intel Sandybridge (was: Re: >> Linux 4.9-rc4) >> https://lkml.org/lkml/2016/11/6/70 >> >> https://bugzilla.kernel.org/show_bug.cgi?id=177701#c4 That bug conflates two issues, with the main issue being unrelated to corruption. >> In my case it looks like this: >> >> https://martin-steigerwald.de/tmp/display-issues-with-kernel-4.9-rc4.png >> >> >> I have a busy week, so I won´t to any bisecting at the moment. I am >> happy to test another patch during breaks between holding the >> training, but please point me specifically to what patch to >> test. Thank you. > > this one: I just replaced max with roundup manually: As I wrote in another thread, the fix has now been pushed to drm-intel-fixes branch of http://cgit.freedesktop.org/drm-intel. It's -rc4 plus half a dozen fixes, including "drm/i915: Round tile chunks up for constructing partial VMAs" which should fix the corruption. Please try that, and report back. If it doesn't fix the issue, please file a bug at the freedesktop.org bugzilla. BR, Jani. -- Jani Nikula, Intel Open Source Technology Center