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=-5.2 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,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 74F61C4361B for ; Thu, 17 Dec 2020 12:38:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2820C23715 for ; Thu, 17 Dec 2020 12:38:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726155AbgLQMia (ORCPT ); Thu, 17 Dec 2020 07:38:30 -0500 Received: from www74.your-server.de ([213.133.104.74]:44820 "EHLO www74.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726488AbgLQMi3 (ORCPT ); Thu, 17 Dec 2020 07:38:29 -0500 X-Greylist: delayed 1470 seconds by postgrey-1.27 at vger.kernel.org; Thu, 17 Dec 2020 07:38:28 EST Received: from sslproxy05.your-server.de ([78.46.172.2]) by www74.your-server.de with esmtpsa (TLSv1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.92.3) (envelope-from ) id 1kps9d-0006oV-7v; Thu, 17 Dec 2020 13:13:09 +0100 Received: from [95.91.111.52] (helo=[192.168.178.21]) by sslproxy05.your-server.de with esmtpsa (TLSv1.3:TLS_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kps9d-000QpR-0h; Thu, 17 Dec 2020 13:13:09 +0100 To: nivedita@alum.mit.edu Cc: mario.limonciello@dell.com, jacobopantoja@gmail.com, ardb@kernel.org, pjones@redhat.com, linux-efi@vger.kernel.org From: Klaus Kusche Subject: Efistub patch breaks 5.10 for me Message-ID: <242ea718-89f8-e74f-e48a-e6b0fa436ed1@computerix.info> Date: Thu, 17 Dec 2020 13:13:08 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit X-Authenticated-Sender: klaus.kusche@computerix.info X-Virus-Scanned: Clear (ClamAV 0.102.4/26019/Wed Dec 16 15:36:02 2020) Precedence: bulk List-ID: X-Mailing-List: linux-efi@vger.kernel.org Hello, tried to boot 5.10.1 (my first attempt to boot a 5.10.x). Displays EFI stub: WARNING: [Firmware Bug]: LoadOptions is an EFI_LOAD_OPTION descriptor EFI stub: WARNING: [Firmware Bug]: Using OptionalData as a workaround for one or two seconds on the notebook display. Then, the notebook display becomes completely black and the notebook does not boot and does not react to anything (hard poweroff needed). 5.9.15 works fine. Of course, this could be some other change 5.9 --> 5.10, but I think Efistub is the first suspect. Directly booting from UEFI to linux, no bootloader. Dell Precision Mobile 7740, dmidecode says BIOS version 1.7.0, 01/07/2020. My kernel has *no* command line arguments at all or at least, it should not have any (fully static kernel with no modules or initrd, all kernel parameters configured into the kernel). In 5.9.15, dmesg displays only a \x01 for the command line. Next step? Is there sonething to try out? Are there any patches I should reverse-apply? Should I open a bug at buzilla.kernel.org? Thanks for any help! -- Prof. Dr. Klaus Kusche Private address: Rosenberg 41, 07546 Gera, Germany +49 365 20413058 klaus.kusche@computerix.info https://www.computerix.info Office address: DHGE Gera, Weg der Freundschaft 4, 07546 Gera, Germany +49 365 4341 306 klaus.kusche@dhge.de https://www.dhge.de