Now that I got EDID working, dispwin -D should be useful. But it keeps waking up a few times per second and making my mouse lag. --Andy $ dispwin -D -v Opened display ':0.0' Found XRandR 1.2 or latter About to enter main loop waiting for XRandR changes Updating profiles for display ':0.0' Updating display 1 = 'Screen 1, Output LVDS1 at 0, 0, width 1440, height 900' Loaded profile and calibration for screen 1 for display ':0.0' Updating profiles for display ':0.0' Updating display 1 = 'Screen 1, Output LVDS1 at 0, 0, width 1440, height 900' Loaded profile and calibration for screen 1 for display ':0.0' Updating profiles for display ':0.0' Updating display 1 = 'Screen 1, Output LVDS1 at 0, 0, width 1440, height 900' Loaded profile and calibration for screen 1 for display ':0.0' Updating profiles for display ':0.0' Updating display 1 = 'Screen 1, Output LVDS1 at 0, 0, width 1440, height 900' Loaded profile and calibration for screen 1 for display ':0.0' Updating profiles for display ':0.0' Updating display 1 = 'Screen 1, Output LVDS1 at 0, 0, width 1440, height 900' Loaded profile and calibration for screen 1 for display ':0.0' Updating profiles for display ':0.0' Updating display 1 = 'Screen 1, Output LVDS1 at 0, 0, width 1440, height 900' Loaded profile and calibration for screen 1 for display ':0.0' Updating profiles for display ':0.0' Updating display 1 = 'Screen 1, Output LVDS1 at 0, 0, width 1440, height 900' Loaded profile and calibration for screen 1 for display ':0.0' Updating profiles for display ':0.0' Updating display 1 = 'Screen 1, Output LVDS1 at 0, 0, width 1440, height 900' Loaded profile and calibration for screen 1 for display ':0.0' Updating profiles for display ':0.0' Updating display 1 = 'Screen 1, Output LVDS1 at 0, 0, width 1440, height 900'