diff options
| author | Alex Hung <alex.hung@canonical.com> | 2020-03-04 15:55:29 -0700 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2020-03-14 10:36:49 +0100 |
| commit | 1ffb8d032d03d686e3b06378780944608cc77906 (patch) | |
| tree | b886824b16cc977eef905509f927271d8e4f4478 /Documentation/admin-guide | |
| parent | fa0fca68e1e64bc53fcb7cfd4bfac27c1b14a955 (diff) | |
acpi/x86: add a kernel parameter to disable ACPI BGRT
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>
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index c07815d230bc..83ba095b3cde 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -450,6 +450,9 @@ bert_disable [ACPI] Disable BERT OS support on buggy BIOSes. + bgrt_disable [ACPI][X86] + Disable BGRT to avoid flickering OEM logo. + bttv.card= [HW,V4L] bttv (bt848 + bt878 based grabber cards) bttv.radio= Most important insmod options are available as kernel args too. |