Wow, thank you Minsang Kim! That actually works 100% perfectly for me! :) I also want to add, if you still want plymouth to show, it also works with:
GRUB_CMDLINE_LINUX="quiet splash acpi_backlight=vendor"
So you don't need to remove the default options, just add the last. Thanks again for workaround!
Wow, thank you Minsang Kim! That actually works 100% perfectly for me! :)
I also want to add, if you still want plymouth to show, it also works with:
GRUB_CMDLINE_ LINUX=" quiet splash acpi_backlight= vendor"
So you don't need to remove the default options, just add the last. Thanks again for workaround!