Please Help newbie here no hdmi out put and not brightness control

Hello, I have ubuntu 20.04 with kernel 5.4 and the drivers 450, the processor is a Ryzen 7 4800h and the GPU is the 1650ti, I have running the x-server, when I plug my external monitor, there is no signal, in the set up I can not see it to use it, but the x-server detects it, I wonder if a have to do anything with the edid, for the xorg.conf file, to be able to use it, and also I can not control de brightness on the on board screen, It is always at 100% when I use the keys to control it, it just shows the bar moving but not change in the brightness.

Any help will be appreciate