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by piyush_soni 824 days ago
I have a modern Dell supported 4K display supporting USB-C to USB-C connection. macOS shows black screen for a few seconds before being able to show anything. Also using the 4K monitor with an actual 4K resolution makes everything very slow, so I just use it with lower resolutions :|. Never saw such issues on even entry level Windows laptops.
1 comments
bzzzt 824 days ago
Is it macOS or the monitor not being responsive? Also, if it's slow your laptop might be too old to properly support 4K or you might have misconfigured something.

At least Dell supports their hardware: have you tried updating the monitor firmware or submitting a report?

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piyush_soni 823 days ago
It's the built-in mac display that goes blank along with the external monitor. On my Intel 2019 MBP it was very slow (many seconds), on this new M3 it's much shorter but still more than a decent Windows laptop which is almost instant.
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