RTX 3060 laptop Nvidia not detecting my second screen

After install Ubuntu 20.04 I tried to connect a second monitor via HDMI in my laptop (Nvidia GeForce RTX 3060 ) and Ubuntu and Nvidia settings detects I connected it, but the only thing I can see is a blank screen.

Anyone had this similar problem? Or someone can help me and tell me how can I try to fix this?

nvidia-bug-report.log.gz (124.2 KB)

  • run
sudo prime-select nvidia
  • run
grep nvidia /etc/modprobe.d/* /lib/modprobe.d/*

to find a file containing

blacklist nvidia

and remove it,
then run

sudo update-initramfs -u

and reboot.