How do I debug (suspected) HDCP issues?

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                          I have a 2021 14" MacBook Pro running macOS 12.4 (21F79) that won't display streaming video in Safari when connected (Thunderbolt) to a LG UltraFine 5K display.

It does the classic thing of playing audio but blacking out the video. If I use another browser, basically anything non-WebKit, it works perfectly well.

Thunderbolt is the only connection to this particular LG display and using HDMI with my TV doesn't trigger the issue.

Any hints as to how I can debug this issue so I can file a bug report or something?

Asked by Lasse (1397 rep)

Sep 9, 2022, 01:47 PM
Last activity: Oct 4, 2023, 03:06 PM

How do I debug (suspected) HDCP issues?

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