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Failed to call SetDisplayConfig. [HR: 31] when Re-enabling monitor

André Pereira80282
3 discussion posts
I am able to disable a second monitor and stick with one screen.
However I can't use DisplayFusion (manually or via profiles) to re-enable that screen.

Some insane flickering happens for a few secs and then I get the error message "Failed to call SetDisplayConfig. [HR: 31]" forcing me to switch back to only one monitor enabled.

Is this a known issue? How can I make it work inside DisplayFusion?
Turnaround I found was re-enable it on Nvidia CPanel then re-apply the DF profiles.

Setup:
Windows 11
Software v9.9 (Steam)
RTX 3070
1 - DELL S2722DGM on DP @1440p 165hz
2 - ASUS VG278 on DP @1080p 165hz
Both w/ GSYNC active (Dell is not certified, while ASUS is)
Feb 25, 2022  • #1
Owen Muhlethaler (BFS)'s profile on WallpaperFusion.com
Hi André,

Are you able to manually enable that monitor through the Windows Display Settings?

Thanks!
Feb 25, 2022  • #2
André Pereira80282
3 discussion posts
Yes
When I disable it is under option "only on monitor 1"
then I change back to "extend to both monitors" and it works.
Feb 25, 2022  • #3
Owen Muhlethaler (BFS)'s profile on WallpaperFusion.com
Could you send me a copy of your troubleshooting info? Here are the steps:
  • Open the Settings > Troubleshooting tab
  • Click the "Export Info to File" button
  • Reply with the file attached

Thanks!
Feb 28, 2022  • #4
André Pereira80282
3 discussion posts
There you go
• Attachment [protected]: DisplayFusionDebugInfo.zip [31,869 bytes]
Mar 1, 2022  • #5
Owen Muhlethaler (BFS)'s profile on WallpaperFusion.com
Hi André,

Thanks for sending that over. DisplayFusion uses the Windows API to set the monitor configuration, so if it works through the Windows display settings, it should be working through DisplayFusion too.

Could you send me over a debug log? Here are the steps:

  • On the DisplayFusion Settings > Troubleshooting tab, change the Logging drop-down to "L1: Log Minimal" and click Apply
  • Reproduce the issue and note the time so we'll know where to check in the log file
  • Click the "Export Info to File" button on the Settings > Troubleshooting tab
  • Reply with the file attached
  • Disable debug logging after sending the log

Thanks!
Mar 2, 2022  • #6
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