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0e1f616
(Get the code!)
Hi,
I have been experiencing the same behavior as well on Ubuntu 16.04 LTS.
Just bought a new laptop (Got it from China - Hasee ZX8-KP5D1, basically Clevo PM7xxDM) The basic specs are :
Core i5 7th Gen. 7400
nVidia GeForce 1070 GTX
LCD FHD
(Let me know if it needs more info)
When I connect HDMI to an external monitor, I can't see anything on the external monitor and my LCD built-in display crashes. The mouse pointer does not move - or has a huge lag and jumps from one side to the other side - nothing can be opened. The only solution is hard reboot.
Even if I connect HDMI before boot, Ubuntu desktop behaves the same way.
Now I am using miniDisplay port with VGA adapter. It works fine unless the screen goes off (Due to inactivity) and turns back on. Then The external monitor won't turn on, though I can see it in my "displays" screen. If I disconnect and reconnect, everything is back to normal (I guess this one is not related to the bug)