Window is not kept fullscreen after switching workspaces in i3wm

[DavidHusicka]

Describe the bug:
When switching between workspaces, osu!lazer is not kept in fullscreen and pops into windowed mode telling it's in fullscreen. Correct behaviour should be keeping osu!lazer in fullscreen (same as other games do).

Screenshots or videos showing encountered issue:
https://youtu.be/l9XiqzJIFBU
(the artefacts in video are caused by recording software)

osu!lazer version:
2020.710.0

Logs:
Not necessary

[bdach]

I did notice this myself running i3 but it's definitely a niche setup so very low priority. Another one for the "osutk issue, fingers crossed for SDL" pile.

For now a reasonable workaround might be to enable cursor confining if on multiple monitors.

[smoogipoo]

Please test with the --sdl argument.

[bdach]

SDL doesn't have full screen yet, so that will have to wait a bit.

[IsaacElenbaas]

Not sure if this is WM-specific but I believe it's on focus lost, not anything fancy with how workstations work. On Herbstluftwm I have the same issue when focusing a window on another monitor (or switching workstations).

[DavidHusicka]

Not sure if this is WM-specific but I believe it's on focus lost, not anything fancy with how workstations work. On Herbstluftwm I have the same issue when focusing a window on another monitor (or switching workstations).

I tried it today with dwm and the problem is still there so it's not WM-specific.

[jai-x]

I suspect this is due to OpenTk/osuTK not adhering to the EWMH specifications which X11 window managers rely upon.

I believe that optional SDL2 window implementation is more compliant in this regard. (I can't find any documentation for this but anecdotally I have found it more compliant from testing with smaller C programs.)

@DavidHusicka As suggested above, I would try running osu!lazer with the --sdl command line flag to test this.

[DavidHusicka]

@DavidHusicka As suggested above, I would try running osu!lazer with the --sdl command line flag to test this.

SDL doesn't implement fullscreen as I am aware of. It was already mentioned here.

I will try this dwm patch but I don't have any hopes it will help.

Edit: i3wm already support for EWMH and it doesn't work so I won't test the patch.

[bdach]

Well, SDL itself as a library does, we're just not using that functionality yet in the framework. I probably wouldn't hold my breath when it comes to WM patches, the version of opentk we're using right now has been broken many times over in multiple ways.

[DavidHusicka]

Doesn't happen on 2020.1203.0 anymore. Closing this issue.