Black Screen with HP EliteBook X360 and HP USB-C Dock

[dylanparry]

I had this problem too, but fixed by doing the following:

1. Create a new file at `/etc/X11/xorg.conf.d/20-intel.conf`
2. Add the following content:
   

   Section "Device"
   Identifier "Intel Graphics"
   Driver "Intel"
   EndSection

3. Reboot

Hopefully this will work for you too.