I have a problem since upgrading to 18.04 LTS version.After a fresh Ubuntu installation, when I plug the screen on my laptop (Dell xps 9560) nothing happens. On the screen it tells me there is no signal. Here is what xrandr command display:
xrandr xrandr: Failed to get size of gamma for output default Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080 default connected primary 1920x1080+0+0 0mm x 0mm 1920x1080 77.00*
Here is the NVIDIA driver I'm using: Driver (GTX 1050)
Here are my display settings with or without HDMI connected: Display settings Thanks for your help!