So it looks like the initial brightness is got from atombios of graphic card, so it is atombios issue or the code can't correctly parse the atombios.
it is highly possible that this is an atombios issue.
So it looks like the initial brightness is got from atombios of graphic card, so it is atombios issue or the code can't correctly parse the atombios.
it is highly possible that this is an atombios issue.