https://bugs.winehq.org/show_bug.cgi?id=54994
--- Comment #1 from C. Leu kle@bluewin.ch --- A new addition.
This topic here depends on the used application. So the dolphin emulator has a minimum requirement for OpenGL 3.3 while it supports up to OpenGL 4.6. Ergo, I had to expose OGL 4.6 to get it working. That also explains why the PCSX-Redux emulator is not affected, it only has support for OpenGL 3.x. As a result it can be said that this `GLXBadFBConfig` error here depends from the application.
If the application supports a higher OGL version then the system exposes then the error is present. But when the OGL requirement of the application is within the available OpenGL version then there is no error. As a consequence I think this looks to be more a problem in Wine rather then Mesa.
So finally this problem should be not present on modern systems which usually support OpenGL 4.6. On the same time this problem should be reproducible by exposing a lower OpenGL version than the application supports. So in conjunction with the dolphin emulator 5.0-16391, a "MESA_GL_VERSION_OVERRIDE=4.4" or "MESA_GL_VERSION_OVERRIDE=4.5" override should trigger the "X Error of failed request: GLXBadFBConfig" error.