Machine is brand new.
Everything was working; I installed all available updates, and now screen brightness for the primary display will not change. Fn-F7/F8 trigger the 'brightness adjustment' image to appear, and the slider moves to the bottom or top, but screen brightness does not actually change.
I have uninstalled / reinstalled nvidia drivers, asus control driver, and re-installed the from-factory nvidia driver. Also changed power modes / restarted many times, and I cannot pinpoint exactly when this started, but I no longer have any brightness control on the primary panel. Windows control also inoperable (same behavior; the on-screen brightness slider moves around but brightness never actually changes).
Any ideas / recommendations?
Thanks in advance.
