2560x1080 has very low bandwidth requirements. At 60Hz even RBR works! Your cable would have to be almost completely broken for it not to work. My video timing

2560x1080 has very low bandwidth requirements. At 60Hz even RBR works! Your cable would have to be almost completely broken for it not to work. My video timings calculator shows exactly what kind of minimum protocol you need for a given video timing. https://tomverbeure.github.io/video_timings_calculator https://tomverbeure.github.io/video_timings_calculator