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all three displays are using HDMI. Main display and the first extended display, both 27" monitors, uses HDMI over USB-C. The third extended display, a Samsung 50" TV, uses the dedicated Mac Studio HDMI port. This is the display that BIAB defaults to after updating to 2025, regardless of which display is set to be the main display.

Does it do the same if you switch the 50” to one of the USB-C ports and one of the 27” to the HDMI?


BIAB 2024 Audiophile Mac
24Core/60CoreGPU M2 MacStudioUltra/8TB/192GB Sequoia, M1 MBAir, 2012 MBP
Digital Performer11, LogicPro, Finale27/Dorico/Encore/SmartScorePro64/Notion6 /Overture5