A user with a similar issue was asking around on discord yesterday. I think i caught the issue.
Comparing the ext-ppsspp.sh script that launches games with the mux_launch.sh script that launches the standalone application, there’s a missing variable set on the latter:
XDG_CONFIG_HOME=“$HOME/.config”
export XDG_CONFIG_HOME
I don’t know exaaaactly what it does, but it is needed in the mux_launch script to set HOME correctly and for PPSSPP to behave as expected.
You can manually add it after export HOME in /opt/muos/share/application/PPSSPP/mux_launch.sh
That section should then look like this:
HOME=“$PPSSPP_DIR”
export HOME
XDG_CONFIG_HOME=“$HOME/.config”
export XDG_CONFIG_HOME
You can edit it via dingux commander on device, or using ssh or sftp with root.
edit: Or you can install the little update file I just linked here via the archive manager!
About the control scheme, yeah, the standalone app will use the system scheme, so it is better to set your psp folder to System by pressing X over any game, going to the control scheme menu and setting System to the whole folder with X once again.
PPSSPP-App-Fix.muxupd (1.5 KB)