Dell G5 5590 RTX 2070 Max-Q Brightness Control

​Hello there, i have G5 5590 with RTX 2070 Max-Q and this will be hilarious.​
​Starting from Nvidia Geforce Driver V 451.48 the laptop lose brightness control! This is reported in various thread and in various website like reddit or nvidia community!​

​In the nvidia community they say that the problem is from Dell signed drivers and i think is not totally true!​
​From Dell G5 5590 Drivers you can download Nvidia Geforce Driver V 442.23 and with this version you bring back the brightness control but you can also download the Nvidia Geforce Driver V 446.14 from this website "​​https://www.nvidia.com/Download/Find.aspx"​​ and this work like a charm.​

​Now i don't know what happened to this laptop but i hope dell-care give us some explanation​

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​Thanks in advance!​