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Documentation/admin-guide: Document nomodeset kernel parameter

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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>
Link: https://patchwork.freedesktop.org/patch/msgid/20211112133230.1595307-6-javierm@redhat.com
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Javier Martinez Canillas 2021-11-12 14:32:29 +01:00
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commit b22a15a5ac
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Documentation/admin-guide/kernel-parameters.txt
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@ -3545,6 +3545,13 @@
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