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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5BF91C433F5 for ; Mon, 8 Nov 2021 14:07:21 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 2B930610E9 for ; Mon, 8 Nov 2021 14:07:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 2B930610E9 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 81B596E0B7; Mon, 8 Nov 2021 14:07:14 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id D1DEF6E0AB for ; Mon, 8 Nov 2021 14:07:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1636380431; 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=VOreeT9xy7J8ItI94NHKifuwS46AUpOFOueH2yffi6I=; b=KKVNeWo5ig2LBJSGCBB3DJLQARzu4wndpl916olDH2ZNSciFJJh51r7LcDyb3WqH/aamfi 4u6ywGXLdTyb4h9lsejufWeTGVzPXcZswcduC7TBhViaL9awn0EuN2It6Z6ECK+lpWK+b5 PdvwMDY37XoRkB1j/8jI/AIi/ONCV3Q= Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-384-2-TqsR_wOl-T79gNPWATyg-1; Mon, 08 Nov 2021 09:07:09 -0500 X-MC-Unique: 2-TqsR_wOl-T79gNPWATyg-1 Received: by mail-wm1-f69.google.com with SMTP id r6-20020a1c4406000000b0033119c22fdbso6259800wma.4 for ; Mon, 08 Nov 2021 06:07:09 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=VOreeT9xy7J8ItI94NHKifuwS46AUpOFOueH2yffi6I=; b=viKmqT2wvwrZB4qCTmCHh59ISoBMyocncbQE+rhqJF8put1EG0ZXwgXIGLFUqSDZ5H KU6iFQayH919Kq7PwuqSXiufTnXb2JP+53kxTE/Rq9Q4ySyh5+oIbvEIjuXTBsRRwYa4 RdRZRFm5JSOYCItS6EeI2YCANjcfQ80PRgXH3vRF1vB1ZZaST4G+BDnD6nJfQNKW5NES P0w0cOuhFIqVvyeij7k5CLvjlj3ceYcUvczxuPPLVfLiQy1gw6Rh/nHl0XP2voZ4MqPB ZhveiwyMEHlWvvCK3gYakIjSeEUIRsao44riEiFsxsbtrnS9se73rHGUxHM9CbBngB1Y F1jg== X-Gm-Message-State: AOAM531htTw9q5EY3OiYuIXd7/EzcKw/c2ZuBiB6Xt7jwubJ5cDkY0Uf QE+MMKxWkUHKjxd+nizLwPRC1T20HAqKG+bmgxRxEKfEVu1Bcf/Z8v5UoemgsozCTeFyBk6Jm8J wRXDyiU4tugEeM16ux9m50sFmU3Dr X-Received: by 2002:a5d:51cf:: with SMTP id n15mr80152wrv.106.1636380428653; Mon, 08 Nov 2021 06:07:08 -0800 (PST) X-Google-Smtp-Source: ABdhPJxsYYuejGw7CybgaCxd/E1fUntxtMWk95iWPCbVv910JhxO1p9TBwfd54lnbUNLk9ILcI1Iiw== X-Received: by 2002:a5d:51cf:: with SMTP id n15mr80114wrv.106.1636380428489; Mon, 08 Nov 2021 06:07:08 -0800 (PST) Received: from minerva.home ([92.176.231.106]) by smtp.gmail.com with ESMTPSA id m14sm10081696wrp.28.2021.11.08.06.07.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Nov 2021 06:07:08 -0800 (PST) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Subject: [PATCH v4 5/6] Documentation/admin-guide: Document nomodeset kernel parameter Date: Mon, 8 Nov 2021 15:06:47 +0100 Message-Id: <20211108140648.795268-6-javierm@redhat.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211108140648.795268-1-javierm@redhat.com> References: <20211108140648.795268-1-javierm@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=javierm@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset="US-ASCII" X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Pekka Paalanen , Jani Nikula , Daniel Vetter , =?UTF-8?q?Michel=20D=C3=A4nzer?= , Javier Martinez Canillas , dri-devel@lists.freedesktop.org, Peter Robinson , Thomas Zimmermann Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" The nomodeset kernel command line parameter is not documented. Its name is quite vague and is not intuitive what's the behaviour when it is set. Document in kernel-parameters.txt what actually happens when nomodeset is used. That way, users could know if they want to enable this option. Signed-off-by: Javier Martinez Canillas --- Changes in v4: - Don't mention the simpledrm driver and instead explain in high level terms what the nomodeset option is about. Documentation/admin-guide/kernel-parameters.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git Documentation/admin-guide/kernel-parameters.txt Documentation/admin-guide/kernel-parameters.txt index 91ba391f9b32..f6434aff943d 100644 --- Documentation/admin-guide/kernel-parameters.txt +++ Documentation/admin-guide/kernel-parameters.txt @@ -3521,6 +3521,13 @@ shutdown the other cpus. Instead use the REBOOT_VECTOR irq. + nomodeset Disable kernel modesetting. DRM drivers will not perform + display-mode changes or accelerated rendering. Only the + system framebuffer will be available for use if this was + set-up by the firmware or boot loader. + + Useful as fallback, or for testing and debugging. + nomodule Disable module load nopat [X86] Disable PAT (page attribute table extension of -- 2.33.1 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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 86048C433EF for ; Mon, 8 Nov 2021 14:07:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6BB2E610E9 for ; Mon, 8 Nov 2021 14:07:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240245AbhKHOKA (ORCPT ); Mon, 8 Nov 2021 09:10:00 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:31870 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240218AbhKHOJz (ORCPT ); Mon, 8 Nov 2021 09:09:55 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1636380431; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=VOreeT9xy7J8ItI94NHKifuwS46AUpOFOueH2yffi6I=; b=NVRzvmCxNJoTylj/GD5Ai2CpFOGke5wHtnUhhnY4oJKbwfN2CyllentI/TFjBEPGJ2sIdM GHQsA7xZ3sjggRZgLV/6aLbwyvSRd8NBYZQyZyA+6Mddl73ZNUqhth5ziTG5jML3CDplve 1MM8mOdu1xa3lKaRYd1tZJiYTeNJbJg= Received: from mail-wm1-f69.google.com (mail-wm1-f69.google.com [209.85.128.69]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-89-_LWUHpq5Psak9MutoXVRAg-1; Mon, 08 Nov 2021 09:07:10 -0500 X-MC-Unique: _LWUHpq5Psak9MutoXVRAg-1 Received: by mail-wm1-f69.google.com with SMTP id g11-20020a1c200b000000b003320d092d08so6249908wmg.9 for ; Mon, 08 Nov 2021 06:07:09 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=VOreeT9xy7J8ItI94NHKifuwS46AUpOFOueH2yffi6I=; b=NLwnRZOrQ7sVl4ebAQ67YR01Ak7deR4eidWZ1upPtvIKjUqbzGB0F0k3sfmB9VuTzE UTctfVO+fcDoZZiIjIHlPoPS7PAGz5yyzjTQNR2CU/3BR15iERts8HC0vUQYeFxy8Nl3 weqv1dGnoHAlkALiAyPY31AM827jPOVfLyxG4hy507ifHe3FeIisOvSue2zGep3CZxXo 3MEpmH0IqOtqOgZO+4Fgz5VFE1SOdReVDmYmQrHNMBmQZECAIt6ISyPvA6WWt5dJX/v9 HKWDL7KmYMAbtFafzHoxXy4Deb0ow8jpZPuwhGGcm14+DcYhcUd4On6TCnl/tuXgzt+e n/pA== X-Gm-Message-State: AOAM533/k+KPdExPAqiLhT6bhMthyf9l9JkURapWG1R+vvv5e0GvIHyC ya5FSQFGtPD5WhNgWm6k+3K0rwtwQZN3o3kLQqkqm84J3wG3bocXaU6EdqzkmON/eZ9uqd//BKc JUUj5vAT6RDQo5zxOCU63vHryy731rrwGb4mWIcI2Ly22I8VZ8s7/NpVVDRlVN6AtfJoqsXL7H4 w= X-Received: by 2002:a5d:51cf:: with SMTP id n15mr80160wrv.106.1636380428697; Mon, 08 Nov 2021 06:07:08 -0800 (PST) X-Google-Smtp-Source: ABdhPJxsYYuejGw7CybgaCxd/E1fUntxtMWk95iWPCbVv910JhxO1p9TBwfd54lnbUNLk9ILcI1Iiw== X-Received: by 2002:a5d:51cf:: with SMTP id n15mr80114wrv.106.1636380428489; Mon, 08 Nov 2021 06:07:08 -0800 (PST) Received: from minerva.home ([92.176.231.106]) by smtp.gmail.com with ESMTPSA id m14sm10081696wrp.28.2021.11.08.06.07.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Nov 2021 06:07:08 -0800 (PST) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org Cc: Pekka Paalanen , Thomas Zimmermann , Daniel Vetter , dri-devel@lists.freedesktop.org, Peter Robinson , Jani Nikula , =?UTF-8?q?Michel=20D=C3=A4nzer?= , Javier Martinez Canillas Subject: [PATCH v4 5/6] Documentation/admin-guide: Document nomodeset kernel parameter Date: Mon, 8 Nov 2021 15:06:47 +0100 Message-Id: <20211108140648.795268-6-javierm@redhat.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211108140648.795268-1-javierm@redhat.com> References: <20211108140648.795268-1-javierm@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The nomodeset kernel command line parameter is not documented. Its name is quite vague and is not intuitive what's the behaviour when it is set. Document in kernel-parameters.txt what actually happens when nomodeset is used. That way, users could know if they want to enable this option. Signed-off-by: Javier Martinez Canillas --- Changes in v4: - Don't mention the simpledrm driver and instead explain in high level terms what the nomodeset option is about. Documentation/admin-guide/kernel-parameters.txt | 7 +++++++ 1 file changed, 7 insertions(+) diff --git Documentation/admin-guide/kernel-parameters.txt Documentation/admin-guide/kernel-parameters.txt index 91ba391f9b32..f6434aff943d 100644 --- Documentation/admin-guide/kernel-parameters.txt +++ Documentation/admin-guide/kernel-parameters.txt @@ -3521,6 +3521,13 @@ shutdown the other cpus. Instead use the REBOOT_VECTOR irq. + nomodeset Disable kernel modesetting. DRM drivers will not perform + display-mode changes or accelerated rendering. Only the + system framebuffer will be available for use if this was + set-up by the firmware or boot loader. + + Useful as fallback, or for testing and debugging. + nomodule Disable module load nopat [X86] Disable PAT (page attribute table extension of -- 2.33.1