I just bought a new monitor (LG E2351VR) and was trying to calibrate it with the Windows 7 Display Color Calibration tool. When I attempt to set the display gamma via the software slider, it temporarily changes the gamma but the changes are immediately reverted after a fraction of a second.
I installed the display driver but it was just an ICM file and it didn't change anything. How can I allow the calibration software to properly set display options?