Disc Menu does not function properly for external video devices
This is specific to the case where LinuxMCE is controlling some other physical device for video playback, such as an external DB or DVD player, via IR or other methods.
When the Disc Menu button is pressed on a UI1 orbiter (specifically tested with DT360), the UI1 orbiter changes screens to the DVD menu screen for a moment, then quickly returns to the DVD remote. No IR commands are sent to the controlled device.
We would expect the Disc Menu button to send the Disc Menu command, which would result in the proper IR commands being sent to the external device. The Orbiter should not change screens, since the menu navigation buttons are already available on the DVD/BD remotes.