acpi/x86: add a kernel parameter to disable ACPI BGRT

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BGRT is for displaying seamless OEM logo from booting to login screen;
however, this mechanism does not always work well on all configurations
and the OEM logo can be displayed multiple times. This looks worse than
without BGRT enabled.

This patch adds a kernel parameter to disable BGRT in boot time. This is
easier than re-compiling a kernel with CONFIG_ACPI_BGRT disabled.

Signed-off-by: Alex Hung <alex.hung@canonical.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

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Alex Hung 2020-03-04 15:55:29 -07:00 • committed by Rafael J. Wysocki

parent fa0fca68e1

commit 1ffb8d032d

2 changed files with 12 additions and 1 deletions

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3

Documentation/admin-guide/kernel-parameters.txt

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10

arch/x86/kernel/acpi/boot.c

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