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=-1.0 required=3.0 tests=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 57DD6C32792 for ; Tue, 1 Oct 2019 00:21:15 +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 2CC1120673 for ; Tue, 1 Oct 2019 00:21:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 2CC1120673 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]:58190 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iF5uk-0005us-A0 for qemu-devel@archiver.kernel.org; Mon, 30 Sep 2019 20:21:14 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43521) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iF5tJ-0005O7-DJ for qemu-devel@nongnu.org; Mon, 30 Sep 2019 20:19:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iF5tI-0002dH-02 for qemu-devel@nongnu.org; Mon, 30 Sep 2019 20:19:44 -0400 Received: from mx1.redhat.com ([209.132.183.28]:54408) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iF5tH-0002d1-Pw for qemu-devel@nongnu.org; Mon, 30 Sep 2019 20:19:43 -0400 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id ADD1C83F42 for ; Tue, 1 Oct 2019 00:19:42 +0000 (UTC) Received: from maximlenovopc.usersys.redhat.com (unknown [10.35.206.18]) by smtp.corp.redhat.com (Postfix) with ESMTP id D4AD06012A; Tue, 1 Oct 2019 00:19:41 +0000 (UTC) Message-ID: <61a62a82212ac52ab80ef7732892d6cc5a1214af.camel@redhat.com> Subject: Re: Minor regression with ramfb+gvt-g+edk2 with qemu 4.1 From: Maxim Levitsky To: qemu-devel@nongnu.org Date: Tue, 01 Oct 2019 03:19:40 +0300 In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.27]); Tue, 01 Oct 2019 00:19:42 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 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: Gerd Hoffmann Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, 2019-09-26 at 13:51 +0300, Maxim Levitsky wrote: > Hi! > > I noticed that with qemu 4.1, when I try to open the > UEFI bios screen, the screen output is garbaged. > > Basicaly what happens is this: > > ramfb driver inside the uefi bios is hardcoded to initialize > the resolution to 800x600 > > Then when you enter the BIOS screen, it switches the resolution > to the 'preferred resolution' which by default is 640x480 > > However since commit a9e0cb67b7f4c485755659f9b764c38b5f970de4, > ramfb resolution is locked once it is set once, thus, > the switch to 640x480 is ignored. > > Best regards, > Maxim Levitsky Ping! Best regards, Maxim Levitsky