[ubuntu] Graphics not working on HP EliteOne 800 G2 AiO with Ubuntu 16.04.1

Hi,

I have recently bought a HP EliteOne 800 G2 AiO with Intel Core i7-6700 3.4G 8M 2133 4C CPU, 32 GB DDR4-2133 SODIMM (2x16 GB) RAM, 256 GB SATA 2.5 3D SSD.

When first booting it in Windows the graphics seems to work as it should. Then I have tested installed Ubuntu 14.04, Ubuntu 16.04 and Kubuntu 16.04. For all of the installations the graphics is not working correctly. The screen seems to be split in half in hight so that the whole screen is squeezed in in the upper half of the screen. Now when I upgraded all the packages on Ubuntu 16.04 (to Ubuntu 16.04.1) the screen is suddenly completely blank when the system is booted up. I can log into the desktop environment but have to type the password without seeing anything on the screen. The screen is still blank after logged into the desktop environment. I can still log in over SSH to the computer.

Any idea how I can fix the graphics so that it works? I also have the previous generation of this HP AiO computer model, HP EliteOne 800 G1 AiO, where the graphics works perfectly. I guess the problem is the graphics chip in HP EliteOne 800 G2 AiO has not a correct software driver in Ubuntu 16.04 LTS.

Thanks in advance!

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[ubuntu] Graphics not working on HP EliteOne 800 G2 AiO with Ubuntu 16.04.1