--- wikisrc/ports/evbarm/raspberry_pi.mdwn	2018/12/23 15:53:14	1.116
+++ wikisrc/ports/evbarm/raspberry_pi.mdwn	2018/12/23 15:55:17	1.117
@@ -257,7 +257,7 @@ Using [emulators/retroarch](http://pkgsr
 	menu_driver = "rgui"
  - After you are done configuring your gamepad in RetroArch and have saved your configuration, you probably want to use the OpenGLES driver which runs in the framebuffer outside of X11 for better performance and latency. Change video_driver in retroarch.cfg:
 	video_driver = "gl"
- - Then exit X11 and run retroarch.
+ - Then exit X11 and run retroarch. Note that your user needs write permissions on `/dev/vchiq`.
 
 # Developer notes