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=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED 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 452A7C433B4 for ; Tue, 11 May 2021 12:10:05 +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 CAD42615FF for ; Tue, 11 May 2021 12:10:04 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CAD42615FF Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kde.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 968CC6EA26; Tue, 11 May 2021 12:10:01 +0000 (UTC) Received: from letterbox.kde.org (letterbox.kde.org [IPv6:2001:41c9:1:41e::242]) by gabe.freedesktop.org (Postfix) with ESMTPS id 716376E4D7 for ; Mon, 10 May 2021 18:06:44 +0000 (UTC) Received: from xps.localnet (235.red-80-26-237.dynamicip.rima-tde.net [80.26.237.235]) (Authenticated sender: aacid) by letterbox.kde.org (Postfix) with ESMTPSA id 3A68A280320; Mon, 10 May 2021 19:06:40 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kde.org; s=users; t=1620670002; bh=xuJ1gjernDZo4OkddAl81wkTMdDclEw4CLq0Grg6Ssg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=FUyLwWMggeNq7xDYm1SRJP7b8u+LyhfjHfF+1yM/Py0L3pTLlA6Z/W5QzEYJyMZYi 8uY0zU9GVF/bhbCOQQAFWu//CfEc+E7MxWieYA0k3L7nXcx0xxFDVePPBbCN6Y+7ay 6F9dNbBF0J6NgNAwtxf+4YU+oUbDsh+X3rzhIKuOlE4aEqieqv5JZA3b9UU+6AGTx/ CynQNHarfcZ9eOxtLVAA9TxRE6PPsLgLQMgZZ0kBngczBdNul4C6cb3h0Q8Hu+Mcel Py2dIGtnBX0WscFWRBQdvsAhl3iDsoioveBlXiV5H224KN9Uyhw0oq5OxlGsshfWtK w8okmNuW0naWw== From: Albert Astals Cid To: Ville =?ISO-8859-1?Q?Syrj=E4l=E4?= , Emanuele Panigati Date: Mon, 10 May 2021 20:06:40 +0200 Message-ID: <3349345.6yYDney9BF@xps> In-Reply-To: References: <20210107182026.24848-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 X-Mailman-Approved-At: Tue, 11 May 2021 12:09:59 +0000 Subject: Re: [Intel-gfx] [PATCH 1/2] drm/i915: Try to use fast+narrow link on eDP again and fall back to the old max strategy on failure X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Matteo Iervasi , Jani Nikula , intel-gfx@lists.freedesktop.org, Kai-Heng Feng Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Yes, I also have the same. I git bisected that and found this to be the cause, i started a new email t= hread because i couldn't find this email ^_^ Cheers, Albert El dilluns, 10 de maig de 2021, a les 10:07:33 (CEST), Emanuele Panigati va= escriure: > Hi, > on my Dell XPS 15 9570 laptop I might have a regression with Arch Linux > (kernel 5.12.2-arch1-1: during boot the laptop monitor goes black while > external monitors still works... > = > = > Panich > = > = > Il giorno lun 11 gen 2021 alle ore 19:28 Ville Syrj=E4l=E4 < > ville.syrjala@linux.intel.com> ha scritto: > = > > On Thu, Jan 07, 2021 at 08:20:25PM +0200, Ville Syrjala wrote: > > > From: Ville Syrj=E4l=E4 > > > > > > Some new eDP panels don't like to operate at the max parameters, and > > > instead we need to go for an optimal confiugration. That unfortunately > > > doesn't work with older eDP panels which are generally only guaranteed > > > to work at the max parameters. > > > > > > To solve these two conflicting requirements let's start with the opti= mal > > > setup, and if that fails we start again with the max parameters. The > > > downside is probably an extra modeset when we switch strategies but > > > I don't see a good way to avoid that. > > > > > > For a bit of history we first tried to go for the fast+narrow in > > > commit 7769db588384 ("drm/i915/dp: optimize eDP 1.4+ link config > > > fast and narrow"). but that had to be reverted due to regression > > > on older panels in commit f11cb1c19ad0 ("drm/i915/dp: revert back > > > to max link rate and lane count on eDP"). So now we try to get > > > the best of both worlds by using both strategies. > > > > Pushed. Fingers crossed for no regressions... > > > > -- > > Ville Syrj=E4l=E4 > > Intel > > > = _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx