Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752292AbdDMNDR (ORCPT ); Thu, 13 Apr 2017 09:03:17 -0400 Received: from mail7.pr.hu ([87.242.0.7]:39499 "EHLO mail7.pr.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750773AbdDMNDP (ORCPT ); Thu, 13 Apr 2017 09:03:15 -0400 To: lkml , Maling list - DRI developers From: Boszormenyi Zoltan Subject: KMS question Message-ID: <2a39d6ca-afdd-bccf-264f-132736313d2b@pr.hu> Date: Thu, 13 Apr 2017 15:03:01 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.0 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-2; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Spam-Score: 0.8 (/) X-Scan-Signature: 9ed658fa786e460656befe7c94609525 X-Spam-Tracer: backend.mail.pr.hu 0.8 20170413130310Z Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 764 Lines: 22 Hi, how can I disable the behaviour in the KMS drivers that enables all outputs at once? It is very annoying that on a POS machine with an 1024x768 LVDS and a 800x480 secondary monitor (both built-in) the KMS driver wakes up both. Then the framebuffer console and plymouth use both screens, making the primary output very odd with only the top-left part used by the boot splash. I would like the boot splash to be shown only on the primary output at its full resolution instead of on all outputs using the smallest common rectangle. Is there a kernel command line configuration that achieves this? The device in question uses the gma500 kernel driver but the same behaviour is observed with the i915 and radeon drivers. Thanks in advance, Zolt?n B?sz?rmenyi