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=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 968E3C433DB for ; Fri, 26 Feb 2021 15:21:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3B73564EED for ; Fri, 26 Feb 2021 15:21:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230104AbhBZPVA (ORCPT ); Fri, 26 Feb 2021 10:21:00 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34322 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229545AbhBZPU5 (ORCPT ); Fri, 26 Feb 2021 10:20:57 -0500 Received: from mail-qv1-xf2a.google.com (mail-qv1-xf2a.google.com [IPv6:2607:f8b0:4864:20::f2a]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1C6C0C061574 for ; Fri, 26 Feb 2021 07:20:17 -0800 (PST) Received: by mail-qv1-xf2a.google.com with SMTP id cw15so3871450qvb.11 for ; Fri, 26 Feb 2021 07:20:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=message-id:date:mime-version:user-agent:from:subject :content-language:to:disposition-notification-to :content-transfer-encoding; bh=P/8RMJyGWzscGfxMrmWB+AnrYYzGJxyd3TDU4Bp8pPY=; b=EBS5mZF1duUz/+S31JOxdd1Oeev+oc78O9x4DGLMUvML0l2W4zF12X8VeVd0yaCkBM BEAn1gMnB+b6uqpThXnUFEe9RwrBmKIChHueyazRZNpbgaMNDEmmPAkHtd1Oy3+4FVO2 U/UH+lqjzGhsi2o8WJT6EUv+xkYdr8rFT2yEI8XtDRzFG0hYmO2G++zSvJBgaT85l0Hk 0GJLOnOgK8+itu/h8txsbcD+9ASoI7ITKAhBW3DRZNxRua9sIjUshUmoWjQnmcfnJznf rEU0rqY0litQa65FH52mXb5XLi1xV2OA9e5lc99DXYefnreSMeL50IiSOQnKKKlEG9Qb t0kg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:date:mime-version:user-agent:from :subject:content-language:to:disposition-notification-to :content-transfer-encoding; bh=P/8RMJyGWzscGfxMrmWB+AnrYYzGJxyd3TDU4Bp8pPY=; b=ndAlAak/q9gz2Pr+IsGjEKCNZjruJw3If1RCwpMCPjgkjyCVjfKDd1K253B1WTr5wH /8MgWepaB08fpf/WT13Ifvwcbm8C8IA3iFVi3tDdkg9s/p8l3RVhgJ9Y+An0HG5djETu xqedZNglQoxl7iAOITSZjuwPtBM7ZbCseAKqa3k6fQ+Ui1BJJSEMO854rF6HxZQScNrh b5TRZM9xKUnVpbKjRHDa1dAA04NgqKTFVAfUYy0Y5D8BFU27Bn92v/A83azF24q5XGkj Hrr4aZmGtXoLUzoBvc3FKsVhq5kiCNh3TZkuqVAl4ketvquVhEdi90duueIayq66/xU/ 4RZA== X-Gm-Message-State: AOAM533Q0qo32ahQ3FwDGDpr1mJdtkFqWhdZRKr9qeWwe4Krj9uhfl80 Ou35TnKLFhQH3Cfralee9Xr0ZVJRv936oQ== X-Google-Smtp-Source: ABdhPJzT8/scoNcvl4n3rGgyELMGhJxNgva824zfu1CseVgkn0j9BXC+QOD2lnKL2+iIS6IwpoVlMg== X-Received: by 2002:a05:6214:1c47:: with SMTP id if7mr3236889qvb.50.1614352810070; Fri, 26 Feb 2021 07:20:10 -0800 (PST) Received: from [10.1.1.149] (pool-71-179-59-207.bltmmd.fios.verizon.net. [71.179.59.207]) by smtp.gmail.com with UTF8SMTPSA id v35sm749258qtb.20.2021.02.26.07.20.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 26 Feb 2021 07:20:09 -0800 (PST) Message-ID: <8a037d87-5ace-36af-29eb-77a4f8c6df98@gmail.com> Date: Fri, 26 Feb 2021 10:20:09 -0500 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:86.0) Gecko/20100101 Thunderbird/86.0 From: hanasaki-gmail Subject: linux kernel 5.10.x to 5.11.x : boot FB switch VT is black after EFI VGA FB changed to CPU FB Content-Language: en-US To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org linux-kernel@vger.kernel.org previous kernel 5.10... current kernel 5.11.4 After moving to 5.11, can no longer switch to VT's.  The boot sequence shows as far as fb0: switching to inteldrmfb from EFI VGA ... Console: switching to colour dummy device 80x25 and then goes black and unresponsive.  the ^Alt-VT# keys do switch between X and the VT except the VT is black and unresponsive.  Booting to recovery mode, or just the console (uninstalled X) gets to the same "it appears to hang" point, although it may just be an unresponsive FB.