How to change Firefox window size in game mode

[Cody The Wolfdog]

The title is pretty self-explanatory. I added Firefox as a non-steam game, but the windows size is awfully small when launching from game mode, and I can't seem to adjust it. Is there a way to change the window size with a launch command or something?

[deaddoof]

I would set display socket to KDE and resize it in desktop mode. Gamemode socket does not support much.

I believe Angelfish runs better in game mode than firefox.

[Cody The Wolfdog]

Originally posted by deaddoof:

I would set display socket to KDE and resize it in desktop mode. Gamemode socket does not support much.

I believe Angelfish runs better in game mode than firefox.

what is Angelfish? and how do i change the display socket?

[deaddoof]

Originally posted by Cody_The_Wolf_:

Originally posted by deaddoof:

I would set display socket to KDE and resize it in desktop mode. Gamemode socket does not support much.

I believe Angelfish runs better in game mode than firefox.

what is Angelfish? and how do i change the display socket?

https://flathub.org/apps/org.kde.angelfish

Firefox guide below

https://www.reddit.com/r/SteamDeck/comments/16eiyi6/make_firefox_work_better_in_game_mode/?utm_source=share&utm_medium=web2x&context=3

The guide does not change the socket to KDE but it changes firefox to use xwayland.

https://github.com/ValveSoftware/gamescope/issues/607

Add --env=WAYLAND_DISPLAY=wayland-0 with a few other variables it will use the KDE display socket.