I've freshly installed Ubuntu 18.04, when I connect HDMI cable to laptop nothing happening. I've googled and found couple of similar issues and run commands like:
xrandr --addmode HDMI-1-1 1920x1080
xrandr --output HDMI-1-1 --mode 1920x1080
However it didn't help, I get:
xrandr: cannot find output "HDMI-1-1"
It's not hardware issue as if I boot in Windows 10 I can use the same monitor absolutely without any issues. Also it used to work in 16.04.
I have Lenovo E570 with Nvidia Drivers installed, in Intel only graphic card mode.
Is there any way to make Ubuntu to work with the external monitor?