May also have a problem with Mir-on-KMS (same scenario):
[2017-06-09 12:37:26.000134] <DEBUG> eglstream: EGLStream platform is unsupported: Missing required extensions: EGL_EXT_platform_device EGL_EXT_device_base
May also have a problem with Mir-on-KMS (same scenario):
[2017-06-09 12:37:26.000134] <DEBUG> eglstream: EGLStream platform is unsupported: Missing required extensions: EGL_EXT_ platform_ device EGL_EXT_device_base