For some reason the buttons that control brightness and input selection, on the right side of the monitor, won't work all the time. If I restart the computer it will usually correct the problem but if the computer goes to sleep or I lock the screen I think whatever process that controls those buttons must shut down and not restart unless I reboot.
I called Dell tech support but a after fruitless 1 1/2 hours the tech said someone would research the problem and call me back later that day but nobody ever called...
Any info or help on this would be great.