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=-0.6 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no 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 ECF5DC11D3D for ; Thu, 27 Feb 2020 18:41:23 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id C294024695 for ; Thu, 27 Feb 2020 18:41:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="UOX93s71" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C294024695 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 343136E04B; Thu, 27 Feb 2020 18:41:23 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-delivery-1.mimecast.com [205.139.110.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id E2DC16E04B for ; Thu, 27 Feb 2020 18:41:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1582828880; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Pf4TB8w3Z+jg5ZcPG6oreLqe5mNXEkWdlFZINTXvLg0=; b=UOX93s71+2zGFSnTE8CoZB10PBIX1UOJm3Hg5m/4KkHI6x5uQpw94mYgPij3Nj1HmhX3gQ iAuyEGNcrHsGKWZUkEuJfnDDsuV23MJ8VnlbCOfWQXW10IOV3aI5kJKHqCo2RHksx18Awy 6S8lf//R4Agf4DqS3AqwTm674vXLgNQ= Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-382-jiyBlINBOumubWZE_H9ITQ-1; Thu, 27 Feb 2020 13:41:09 -0500 X-MC-Unique: jiyBlINBOumubWZE_H9ITQ-1 Received: by mail-qk1-f198.google.com with SMTP id x19so179347qkh.2 for ; Thu, 27 Feb 2020 10:41:09 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:subject:from:to:cc:date:in-reply-to :references:organization:user-agent:mime-version :content-transfer-encoding; bh=Pf4TB8w3Z+jg5ZcPG6oreLqe5mNXEkWdlFZINTXvLg0=; b=e5mrFdKyM57WLCOx8he9RzZj7KwWWVZDQgpcAp63lcPn6lbp6C+RS19jz8BMiB8T0k ISjRUSkJVSW3Lyz/GvcIIbWfAD5SVjIrC4FzIBIMZyJKUxnTKXLzhOkYMCu6L4yvvF1s 4Ab6fg2lJaHmWcOpTvZDQ/0J1x/CPBx6Oyw9PhyavGqQSUjcjXfLR8uBziPVwArWvqhG qCNTyN4IQCGPxuqVb6DcV53vSNJK+DOsDcpYMR0ZwOXMUk7B2TEp9sJKqTdUirHEZDJ1 q8Z92n/LJUJVIvYWNdlCch0jHsXgIpkWFL+OtR64Xtj9KTVV1QXk60LDboQrmaaIYLMJ cwdw== X-Gm-Message-State: APjAAAUnyDKpSWqg0tVipNq1voGFAeLifYXwFWcwFDr7vsk8SBbXPbdm 1BhHHnyN4OtvGl4w0xZnZP4JU/TnS77+f3FIvS7LKzTBN8VZHdhYcVf74orU1F5LVBPs3tUGtpT 7zpPF7eGVj4ONppO492KEIASQCC5i X-Received: by 2002:ae9:e40e:: with SMTP id q14mr666019qkc.419.1582828869360; Thu, 27 Feb 2020 10:41:09 -0800 (PST) X-Google-Smtp-Source: APXvYqzWm7FH0FqAJWftq5uTTLXkvkQ438hikCYPwQu2Qsp4785muxMC5eb0y9XsO29lkoPkxU+7lQ== X-Received: by 2002:ae9:e40e:: with SMTP id q14mr665995qkc.419.1582828869068; Thu, 27 Feb 2020 10:41:09 -0800 (PST) Received: from dhcp-10-20-1-196.bss.redhat.com ([144.121.20.162]) by smtp.gmail.com with ESMTPSA id m200sm3675073qke.135.2020.02.27.10.41.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 27 Feb 2020 10:41:08 -0800 (PST) Message-ID: Subject: Re: 5.6 DP-MST regression: 1 of 2 monitors on TB3 (DP-MST) dock no longer light up From: Lyude Paul To: Hans de Goede Date: Thu, 27 Feb 2020 13:41:07 -0500 In-Reply-To: <99213368-5025-8435-502b-3d23b875ca60@redhat.com> References: <99213368-5025-8435-502b-3d23b875ca60@redhat.com> Organization: Red Hat User-Agent: Evolution 3.34.4 (3.34.4-1.fc31) MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com 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: , Cc: intel-gfx , "dri-devel@lists.freedesktop.org" Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" hi - I almost certainly know the solution to this, the patches that we got from amd to do bandwidth checking in the DP MST helpers don't actually work correctly in a lot of cases and I need to fix them. I've just been busy on PTO and only just got back today, and have been busy with fixing a lot of RHEL stuff at the same time. I'll take a closer look at this soonb On Wed, 2020-02-26 at 16:15 +0100, Hans de Goede wrote: > Hi Lyude and everyone else, > > Lyude I'm mailing you about this because you have done a lot of > work on DP MST, but if this rings a bell to anyone else feel > free to weigh in on this. > > I'm currently using a Lenovo X1 7th gen + a Lenovo TB3 gen 2 dock > as my daily rider for testing purposes. When 5.6-rc1 came out I > noticed that only 1 of the 2 1920x1080@60 monitors on the dock > lights up. > > There are no kernel errors in the logs, but mutter/gnome-shell says: > > gnome-shell[1316]: Failed to post KMS update: Page flip of 93 failed > > With 93 being the crtc-id of the crtc used for the monitor which is > displaying black. Since then I've waited for 5.6-rc3 hoping that a > fix was already queued up, but 5.6-rc3 still has this problem. > > gnome-shell does behave as if all monitors are connected, so the > monitor is seen, but we are failing to actually send any frames > to it. > > I've put a log collected with drm.debug=0x104 here: > https://fedorapeople.org/~jwrdegoede/drm-debug.log > > This message stands out as pointing to the likely cause of this problem: > > [ 3.309061] [drm:intel_dump_pipe_config [i915]] MST master transcoder: > > > Regards, > > Hans > -- Cheers, Lyude Paul (she/her) Associate Software Engineer at Red Hat _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel