From: Javier Martinez Canillas <javierm@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: "Jani Nikula" <jani.nikula@intel.com>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Peter Robinson" <pbrobinson@gmail.com>,
"Michel Dänzer" <michel@daenzer.net>,
dri-devel@lists.freedesktop.org,
"Thomas Zimmermann" <tzimmermann@suse.de>,
"Pekka Paalanen" <pekka.paalanen@collabora.com>,
"Javier Martinez Canillas" <javierm@redhat.com>
Subject: [PATCH v5 5/6] Documentation/admin-guide: Document nomodeset kernel parameter
Date: Fri, 12 Nov 2021 14:32:29 +0100 [thread overview]
Message-ID: <20211112133230.1595307-6-javierm@redhat.com> (raw)
In-Reply-To: <20211112133230.1595307-1-javierm@redhat.com>
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 <javierm@redhat.com>
Acked-by: Thomas Zimmermann <tzimmermann@suse.de>
Acked-by: Jani Nikula <jani.nikula@intel.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
---
(no changes since v4)
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
next prev parent reply other threads:[~2021-11-12 13:33 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-12 13:32 [PATCH v5 0/6] Cleanups for the nomodeset kernel command line parameter logic Javier Martinez Canillas
2021-11-12 13:32 ` [PATCH v5 1/6] drm: Don't print messages if drivers are disabled due nomodeset Javier Martinez Canillas
2021-11-12 13:32 ` [PATCH v5 2/6] drm/vboxvideo: Drop CONFIG_VGA_CONSOLE guard to call vgacon_text_force() Javier Martinez Canillas
2021-11-12 13:32 ` [PATCH v5 3/6] drm: Move nomodeset kernel parameter to the DRM subsystem Javier Martinez Canillas
2021-11-19 10:20 ` Javier Martinez Canillas
2021-11-19 11:08 ` Greg Kroah-Hartman
2021-11-12 13:32 ` [PATCH v5 4/6] drm: Decouple nomodeset from CONFIG_VGA_CONSOLE Javier Martinez Canillas
2021-11-12 14:05 ` Jani Nikula
2021-11-12 13:32 ` Javier Martinez Canillas [this message]
2021-11-12 13:32 ` [PATCH v5 6/6] drm: Make the nomodeset message less sensational Javier Martinez Canillas
2021-11-27 13:06 ` [PATCH v5 0/6] Cleanups for the nomodeset kernel command line parameter logic Javier Martinez Canillas
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