Hello everyone,
I have instealled on a lenovo 13 Ubuntu 16.04 Gnome lightdm. I installed offical Ubuntu then installed gnome after with sudo apt-get install gnome-desktop-environment

I use a hdmi cable to connect the laptop to a big monitor at work with a usb keyboard an mouse.

When I lock / shut the lid on the laptop to go away when I come back the usb key board and mouse do not wake it up and even sometimes when using the laptop keyboard itself it seems very very slow to wake.

When I do eventually get it work the login screen only appears on the laptop even though I have set the plugged in hdmi as the main screen.

When I log in the other monitor still refueses to wake up or out put anything.

I have to physical unplug the hdmi and plug it back in again which is now getting very frustrating.

Any ideas how I can fix this?