Mac Pro 2019 Radeon Vega II MPX Issue with HDMI not turning on
Older OS, Monterey...soon will move to Tahoe. Maybe a cause? Anyway, have an HDMI connected and 2 Thunderbolt 3 to HDMI cables. HDMI would not output to monitor. Moved both Thunderbolt cables to Bus 1. Success. Apple docs on this card connections: https://support.apple.com/en-us/101866
