I have a new Dell G3 laptop with an NVIDIA 1060 TI GPU. This system is set up for dual boot with Windows / Ubuntu. Ubuntu can not recognize the HDMI port and does not display my second monitor. However, it works well with Windows.
I tried to install all the routine updates. None of these things fix the problem.
I also recently changed my driver with this Commnad:
sudo apt install nvidia-driver-435
but it did not solve the problem.
$ lspci -k | grep -EA3 'VGA|3D|Display' 00:02.0 VGA compatible controller: Intel Corporation Device 3e9b Subsystem: Dell Device 0949 Kernel driver in use: i915 Kernel modules: i915 -- 01:00.0 VGA compatible controller: NVIDIA Corporation Device 2191 (rev a1) Subsystem: Dell Device 0949 Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia 01:00.1 Audio device: NVIDIA Corporation Device 1aeb (rev a1)