Hello, This issue sounds similar as this one 
I have been using Dell G15 5515 (RTX 3060) for a month. Previously, it never occurred to me to enable the hybrid Graphics mode from the BIOS because all I had been doing during this time was playing games. I got back to my work yesterday and thought it would be better to enable hybrid Graphics mode since I'm not going to play games for some time. But to my surprise, the display is stuck at maximum brightness after enabling the hybrid graphics mode, and changing the brightness slider does nothing.I tried updating the Nvidia graphics driver, reinstalling/updating the AMD Radeon Graphics driver (integrated), and the driver for the Generic PnP monitor. But nothing worked. I can only adjust the brightness if I disable the hybrid Graphics mode from the BIOS.Some related Information:OS: Windows 11 HomeBIOS version: 1.7.1Nvidia Driver: 526.98I appreciate your help.
Dell G15 5515 (RTX3060) - screen brightness stuck at max on windows