Problem with constant switching external monitor on and off

edited September 2020 in ZenBook
System: Windows 10
Battery or AC: AC
Description: Problem with constant switching external monitor on and off
Model: ZenBook Pro 15 UX550GD
Frequency of Occurrence: Always
Reset OS: No


I have external monitor which I connect to the laptopover hdmi/Usb C – I tried both ways.So what happens is that I select to show my desktop on thesecond external monitor only. Then the monitor keeps switching off and on everysingle minute until I unplug the cable and use the laptop screen only. I tried to show desktops on both, did not help either to solve the issue.My model is:
Thanks for any help, it is really frustrating to work this way :-(((


  • Hello vaclav.schmuttermeier,
    What kind of cable and external monitor are you using?
    Have you tried to use another cable or dock?
    The chip-set might not matched.

    Thank you for messaging us.
    Have a nice day.
  • i checked technical specs of laptop and i found it supports two external monitors AND LAPTOP igpu has Intel® UHD Graphics 630
    Graphics Output eDP/DP/HDMI/DVI

    4K Support Yes, at 60Hz

    Max Resolution (HDMI 1.4)‡ [email protected]

    Max Resolution (DP)‡ [email protected]

    Max Resolution (eDP - Integrated Flat Panel)‡ [email protected]/

    Mkght be graphics drivers of related softwares are coruppted,
    Make sure ,your external monitors supports hdmi 1.4 or not ?
This discussion has been closed.