@retropiedude said in Dolphin or lr-dolphin change emulator on RetroPie to OpenGL or start from:

Oh, that's interesting. Any idea what it's cause then?

Seems that Dolphin uses a Vulkan/GL extension which is not supported by the Pi5 drivers - https://gitlab.freedesktop.org/mesa/mesa/-/issues/10250. The issue has also been reported to upstream Dolphin, but I doubt it's going to be solved, in a reasonable time frame or at all.

@wrybread said in How to run libretro MAME from commandline? And/or see debug info?:

Whoa. And oof. I wonder if creating the user "pi" will fix it.

The user is already present, but the configs are probably broken now since you've run the setup as a different user. Just reinstall the image and start again.