https://bugzilla.kernel.org/show_bug.cgi?id=60659
--- Comment #7 from Ilia Mirkin imirkin@alum.mit.edu --- In the larger sense of "are you having a problem", yes there is a bug somewhere.
But IMO it's not in the nouveau driver. Perhaps discuss this with the person on the other bug who suggested there was an issue in nouveau... I'm not sure what that is. Perhaps a quirk should be added in acpi_video, but I thought they were off of doing that... again, not sure.