Described herein are systems and methods to facilitate and enhance compatibility between a source device, such as a set-top box, and a sink device, such as a television or audio system. The source device is configured to recognize extended display identification data (“EDID”) associated with sink devices which have been determined to provide incorrect EDID data. A replacement EDID is used by the source to provide operability. Likewise, commands from the source which are incompatible with, or produce undesired results in the sink may be removed or replaced with replacement commands.