In its software there was a tab called 'monitor settings', iirc. The laptop itself had a built-in GPU (Intel HD2500). Old setupĪs a side note to the Dell brightness change - I can confirm that it also did work for me.
Especially when you create your own GUI (which is around 5 minutes in C#) or use plain Windows shortcuts. Nevertheless, it has a commandline interface, which is much better. My screens also flicker a lot when changing brightness. The ScreenBright program was able to modify it, although I think it's GUI is quite terrible and easy to break you custom settings. I found enable DDC/CI option in my displays' settings. ScreenBright seems discontinued, but as suggested, pangobright might be an alternative.
