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=-2.0 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_SANE_1 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 462B6C54FCB for ; Wed, 22 Apr 2020 16:08:57 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 1033220774 for ; Wed, 22 Apr 2020 16:08:57 +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="OyzklpD6" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 1033220774 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:53638 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jRHvk-0006c1-6f for qemu-devel@archiver.kernel.org; Wed, 22 Apr 2020 12:08:56 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:52320) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jRHsJ-0002oe-Vs for qemu-devel@nongnu.org; Wed, 22 Apr 2020 12:05:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jRHsF-0007ly-Qy for qemu-devel@nongnu.org; Wed, 22 Apr 2020 12:05:23 -0400 Received: from us-smtp-delivery-1.mimecast.com ([205.139.110.120]:23645 helo=us-smtp-1.mimecast.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1jRHsF-0007eR-B8 for qemu-devel@nongnu.org; Wed, 22 Apr 2020 12:05:19 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1587571517; 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=FD61kM4prKv0MRX0jf7+d+FRsN10wugBezZK7ZM89gg=; b=OyzklpD6O2zVJI+vbRvDNybqD+FM3egnVDcmWkhmCYg86o1lELwXikGLxXp05aTy5jNTQq Nks3AXh/E29ijy44Qq/5plVU5cIHwS033vx8biT+qQeU0zIdTG8sfXzXoy3i8w8IcE8MyB 0bCYqfI/sTL19sCgjc4yTy45UurN8hw= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-404-4YAN2_xxOUqf0rIhvNqcYQ-1; Wed, 22 Apr 2020 12:05:15 -0400 X-MC-Unique: 4YAN2_xxOUqf0rIhvNqcYQ-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 3E86B18C8C22; Wed, 22 Apr 2020 16:05:14 +0000 (UTC) Received: from lacos-laptop-7.usersys.redhat.com (ovpn-113-154.ams2.redhat.com [10.36.113.154]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5E06A19756; Wed, 22 Apr 2020 16:05:07 +0000 (UTC) Subject: Re: [edk2-discuss] Load Option passing. Either bugs or my confusion. To: Hou Qiming References: <623b1855-285c-cce3-c806-c17e5fd217ea@redhat.com> <5211.1586899245384995995@groups.io> <20200420141303.dxjqgvmzglrjtsly@sirius.home.kraxel.org> <9aed493a-2187-cacd-5631-54fb9973509c@redhat.com> From: Laszlo Ersek Message-ID: Date: Wed, 22 Apr 2020 18:05:06 +0200 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: Content-Language: en-US X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Received-SPF: pass client-ip=205.139.110.120; envelope-from=lersek@redhat.com; helo=us-smtp-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/22 04:15:03 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Received-From: 205.139.110.120 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: edk2-devel-groups-io , qemu devel list , Gerd Hoffmann , discuss@edk2.groups.io, valerij zaporogeci Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On 04/22/20 09:42, Hou Qiming wrote: > A little off topic thing: isn't the default resolution supposed to be > 1024x768? No. > This is the Microsoft regulation which all my physical devices > seem to follow: > > https://docs.microsoft.com/en-us/windows-hardware/test/hlk/testref/6afc8979-df62-4d86-8f6a-99f05bbdc7f3 Key term being "Microsoft regulation". The UEFI spec requires discrete ("plug-in") graphics devices to support at least either 800x600x32 or 640x480x32. And the edk2 (not just OVMF) default for the console resolution is 800x600. (See PcdVideoHorizontalResolution and PcdVideoVerticalResolution in "MdeModulePkg/MdeModulePkg.dec".) > And when the user provides an EDID one should parse it and set the default > resolution to match it. But that's a less important feature. It's more complex than you might think, and (to me personally) it seems to require more time than its importance justifies. https://bugzilla.redhat.com/show_bug.cgi?id=1749250 Laszlo