Posted April 19, 2025


1. Installed it with "sudo apt install mangohud"
2. Enabled the FPS counter in the Lutris game settings
Demonicon => Configure => System options => Display => FPS counter (MangoHud) = Enabled.
However, I see no counter. Is this because Ubuntu/Mint offer only the 64bit version of MangoHud, and a 32bit version is apparently needed for 32bit applications, like Demonicon?
Sometimes the --dlsym argument is needed, on GOG native versions, wich usually use OpenGL I always use the launch argument on the desktop shortcut.
Open the desktop launcher/icon with a text editor and modify the line "EXEC= mangohud --dlsym PathToGameLauncher.sh"
It seems Mangohud now works a little different but my version is a couple of years old and perhaps the same with the APT version.
OpenGL games may also need dlsym hooking, which is now enabled by default.

That said, it's a pain to get working on Linux Mint. There's a weird issue with dependencies on Debian derivatives and the only way to correct is to build from source.
I've just checked Goverlay github page and the issue I was talking seems gone, now it just the matter of installing "libqt6pas".
Post edited April 19, 2025 by Dark_art_