obsproject / obsproject/obs-studio

Full screen projector seems to be broken with multiple displays

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issue/confirmed platform/windows
Dominant language
C
Stars
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Forks
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Avg merge
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Merged PRs (30d)
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Description

Operating System Info

Windows 10

Other OS

No response

OBS Studio Version

27.1.3

OBS Studio Version (Other)

No response

OBS Studio Log URL

https://obsproject.com/logs/jXnlG954lFpT5VoS

OBS Studio Crash Log URL

No response

Expected Behavior

OBS full screen projector should project to the selected display.

Current Behavior

The system has 5 display monitors. Two are connected to the first graphics card, two to the second graphics card and one to the USB to HDMI adapter.
Was using OBS 26.0.2. Full screen projector worked just fine.
Upgraded to OBS 27.1.3. Now full screen projector always projects to the first display no matter which display is selected as the target display.
Now installed both OBS 26.0.2 and OBS 27.1.3 in portable mode (in separate directories). With OBS 26.0.2 full screen projector works just fine (i.e. projects to the selected display). With OBS 27.1.3 full screen projector always projects to the first display no matter which display is selected as the target display.

Steps to Reproduce

Launch OBS, select any scene, right click either the "Preview" or the "Program" window select "Fullscreen Projector" and then select a display
OBS always projects to the same display no matter which display is selected from the list.

Anything else we should know?

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce in OBS Studio 27.1.3 on Windows 10 with multiple displays, following the listed Fullscreen Projector steps, and compare with 26.0.2. Review the supplied OBS log while testing display selection; done means the projector opens on whichever display is selected rather than always using the first display.

Written by the indexing model from the issue text.

Assessment

Tech stack
c
Domain
desktop
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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