4/21/2023 0 Comments Thunderbolt display driver for mac![]() If there is an issue with the DAC (or the post-DAC analogue section) the result is frequently that the Mac thinks a display is connected, and will show mirroring and extended desktop options in Display Preferences and yet output nothing to the display. Mini-DisplayPort to VGA adapters have a digital to analogue converter in the main body, and while the host Mac may be able to communicate with the DAC (as it would if connected to a digital display) it will be unaware of any faults downstream of the DAC. The reason for this is quite simple, mini-DisplayPort to DisplayPort/DVI-D/HDMI connections are digital and pass straight through to the connected display, the only difference between them is the form factor of the connector. Is it a 3rd-party item or genuine Apple? Either way it's quite common for these to be recognised by the host Mac and yet not output anything to the display. I'm guessing it's actually a mini-DisplayPort to VGA adapter you're using.
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