ValveSoftware / ValveSoftware/Proton

MultiMonitor Issue with switching to fullscreen. - Didn'T use the primary screen

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Dominant language
C++
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Description

Proton 5.13-2
Games: I think all games are effected, i have this in embr and Rocket League.
Ubuntu Mate 20.04.1

If a game starts in Fullscreen, then it opens in Fullscreen on the primary screen. pefect.
But if you use Alt+Enter to switch into window mode for doing something else and then switch back with Alt+Enter to fullscreen it opens on the secondary screen.

If you leave a game in window mode and you start a game, it will start in window mode. If you hit Alt+Enter it will opens on the secondary screen.

I didn't change anything, but there was a time, where i could drag the window to the desired screen, press Alt+Enter and it will be fullscreen on that screen. This didn't works anymore. It opens everytime on the second screen, which is on the left.

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First steps

  1. Read the whole issue, then the project's contributing guide.
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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the behavior with Proton 5.13-2 on Ubuntu Mate 20.04.1 using two monitors, switching a game with Alt+Enter between windowed and fullscreen modes. Done means fullscreen returns to the display containing the game window rather than always opening on the secondary screen.

Written by the indexing model from the issue text.

Assessment

Tech stack
cpp
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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