Fullscreen dual monitor bug

Development Programming & Scripting
1

Build Type: ‘Binary’ build from the Unreal Launcher

Build version: 4.12.5

Detailed description of the issue: I execute a console command r.setRes 1920x1080p (the native resolution of my monitor) in a blueprint with an event. I have it windowed and it should go fullscreen on my main monitor, but it goes black and gets glitched. My main monitor and half of my second monitor turn black. I am unable to do much.

Repro Steps

Action 1 - Open any project

Action 2 - Add an ‘Event Begin Play’ node to the Level EventGraph

Action 3 - Connect the above to a console command “r.setRes 1920x1080p”

Action 4 - Open game in a seperate window, wait a moment for the node to console command to kick in and enjoy the bug.

Occurs 100% of the time.

System Specs:
Windows 10
i5 6600K - with integrated graphics Intel(R) HD Graphics 530
8 GB RAM
SSD
R9 390

NB! My main monitor is connected to the R9 390 w/ DVI-D and my side one to the integrated graphics w/ VGA. I strongly believe that this causes the bug mentioned above.

2

Hello RealVulpes,

You’re correct in assuming that this is being caused by the display setup you’re currently using. Unfortunately we don’t support this type of setup, as the conflicting hardware/drivers over the span of the multiple screens is bound to cause some issues, seeing as the editor does have certain functions/settings that are only activated with certain types of cards. I would suggest picking one particular card to connect both of your displays to when using the editor to avoid this issue in the future.

Have a nice day!