RE: Precision M4800 : Input lag at log in, Switchable graphics not functioning, GPU fan "chirping" when it starts up.
Did you contact Dell?
If yes, what was respond?
That's so frustrating!!!!
I bought this workstation to improve my workflow and overall experience.
I felt like I did opposite.
It must be a way to fix this, maybe graphic card doesn't have enough power supply ,since everything works fine as soon as I connect to the external monitor .