https://bugs.freedesktop.org/show_bug.cgi?id=78453
--- Comment #14 from Michel Dänzer michel@daenzer.net --- (In reply to comment #13)
If I try to run "es2gears_screen" from textmode console (KMS) I get: libEGL warning: DRI2: xcb_connect failed
Make sure the DISPLAY environment variable is not set, and set the environment variable EGL_LOG_LEVEL=debug to get more information.