I installed Antergos in dual boot with windows 10 on an Asus k501ux laptop. I had some driver problem due to the dual graphic card (intel graphics + nvidia geforce 950M) but now it works fine (I used nvidia-installer).
Tonight after I had been using the system for some time, my external monitor stopped working after a reboot. I tried changing the hdmi cable and plugging into a different monitor. The monitor works fine with another laptop. And now I can’t get any monitor to work on my laptop on BOTH antergos and window 10… so it seems to be a physical problem with the laptop hdmi port… what just happen??

How could I troubleshoot this?