T400 screen won't dim upon awake from sleep- XP Pro

[emeraldgirl08]

When I put the T400 to sleep and then resume... the brightness automatically goes to max. I try and turn the brightness down but it will not. It only does this on AC. I've looked at my Power Manager settings but I don't see anything that might trigger this annoying quirk. I have to restart the laptop to gain control of the brightness again. I have my Power Manager set up:

Code: Select all

Power Source Optimized

                                                        on Battery                   on AC 

max cpu speed:                             : adaptive                           : Highest
cpu deeper sleep:                          : enabled                             : disabled
optimize fan control to:                   : balance all parameters         : maximize performance
display brightness:                          : fourth notch from low           : third from High
auto optical drive off:                      : enabled                             : disabled

Idle Timers:                                   : Never                               : Never
            Lower to:                          : Low                                 : fourth from High
Lower display refresh rate:               : after 3 min                        : Never
            Lower to:                          : 50hz                                : is grayed out
Turn off Display:                             : after 5 mins                      : after 15 mins

I don't have the Dynamic Brightness Control settings checked off. If anyone has any insight please share. Thanks.