From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lu Baolu Subject: Re: No video output on 4.19-rc1 on Dell XPS 13 9360 Date: Sun, 9 Sep 2018 10:01:17 +0800 Message-ID: <89dff474-7baa-83ce-d70d-fffc4699d3ce@linux.intel.com> References: <20180908165747.16c2843c@fire.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <20180908165747.16c2843c-STI+9kRLTpF82hYKe6nXyg@public.gmane.org> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org Errors-To: iommu-bounces-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org To: Dmitrii Tcvetkov Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org List-Id: iommu@lists.linux-foundation.org Hi, The fix has been posted here. https://lkml.org/lkml/2018/9/8/14 Best regards, Lu Baolu On 09/08/2018 09:57 PM, Dmitrii Tcvetkov wrote: > I've sent the email[1] before to iommu and lkml mailing lists only, but > according to iommu mailing list archive it wasn't received[2]. I'm > resending it to Lu Baolu and Joerg Roedel with proper kernel .config > file. Sorry if the duplication is unnecessary. > > Since 4.19-rc1 my laptop boots with vertical static set of rows of dots > on the screen instead of proper video output. SSH'ing into it allowed > to get dmesg-without-pt.log output, PCI device 00:02.0 is VGA > compatible controller: Intel Corporation HD Graphics 620 (rev 02) > > Appending "iommu=pt" to kernel cmdline allowed to boot with functional > graphics, but gave dmesg-with-pt.log output. > > Bisect between v4.18 and v4.19-rc1 tags led me to commit > a7fc93fed94b173e2 (iommu/vt-d: Allocate and free pasid table). > > Reverting this commit allows to build kernel on current master > (a12ed06ba2d3fa60e), which boots with functional graphical output > without specifying "iommu=pt". > Dmesg output is in dmesg-with-revert.log. > > Without the revert current master boots like 4.19-rc1. > > [1] https://lkml.org/lkml/2018/9/7/1081 > [2] https://lists.linuxfoundation.org/pipermail/iommu/2018-September/date.html > 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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 842D4C4321E for ; Sun, 9 Sep 2018 02:03:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 194662086B for ; Sun, 9 Sep 2018 02:03:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 194662086B Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726653AbeIIGuR (ORCPT ); Sun, 9 Sep 2018 02:50:17 -0400 Received: from mga01.intel.com ([192.55.52.88]:57994 "EHLO mga01.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726618AbeIIGuR (ORCPT ); Sun, 9 Sep 2018 02:50:17 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Sep 2018 19:02:26 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.53,349,1531810800"; d="scan'208";a="87187064" Received: from allen-box.sh.intel.com (HELO [10.239.161.122]) ([10.239.161.122]) by fmsmga004.fm.intel.com with ESMTP; 08 Sep 2018 19:02:25 -0700 Cc: baolu.lu@linux.intel.com, Joerg Roedel , iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: No video output on 4.19-rc1 on Dell XPS 13 9360 To: Dmitrii Tcvetkov References: <20180908165747.16c2843c@fire.localdomain> From: Lu Baolu Message-ID: <89dff474-7baa-83ce-d70d-fffc4699d3ce@linux.intel.com> Date: Sun, 9 Sep 2018 10:01:17 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <20180908165747.16c2843c@fire.localdomain> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, The fix has been posted here. https://lkml.org/lkml/2018/9/8/14 Best regards, Lu Baolu On 09/08/2018 09:57 PM, Dmitrii Tcvetkov wrote: > I've sent the email[1] before to iommu and lkml mailing lists only, but > according to iommu mailing list archive it wasn't received[2]. I'm > resending it to Lu Baolu and Joerg Roedel with proper kernel .config > file. Sorry if the duplication is unnecessary. > > Since 4.19-rc1 my laptop boots with vertical static set of rows of dots > on the screen instead of proper video output. SSH'ing into it allowed > to get dmesg-without-pt.log output, PCI device 00:02.0 is VGA > compatible controller: Intel Corporation HD Graphics 620 (rev 02) > > Appending "iommu=pt" to kernel cmdline allowed to boot with functional > graphics, but gave dmesg-with-pt.log output. > > Bisect between v4.18 and v4.19-rc1 tags led me to commit > a7fc93fed94b173e2 (iommu/vt-d: Allocate and free pasid table). > > Reverting this commit allows to build kernel on current master > (a12ed06ba2d3fa60e), which boots with functional graphical output > without specifying "iommu=pt". > Dmesg output is in dmesg-with-revert.log. > > Without the revert current master boots like 4.19-rc1. > > [1] https://lkml.org/lkml/2018/9/7/1081 > [2] https://lists.linuxfoundation.org/pipermail/iommu/2018-September/date.html >