Backlight settings deleted when password device lock is activated

[Guest lilich62]

Hi.

I have the following problem :

Backlight's delay is cleraed when I activate the devis password lock.

Setting before activating the password lock :

Activating the password lock:

Setting after activating the password lock :

My playeraddict'backlight is then turned off after less than 10 seconds.

Is this a known problem ? Do someone know how to solve this problem ? May I fix this problem using the registry ?

Thanks for any help !