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Recently updated BIG SUR to 11.7.1 and now DEL projector will not recognize the MacBook Air output. It did prior to the latest update. HDMI is connected to the lightening port via Belkin connector. The Del projector recognizes other HDMI sources. The MacBook HDMI continues to be recognized through TV. DID the update alter the output of the lightening port? Safestart as suggested by Apple did not work
MacBook Air 13″, macOS 11.7
Have you done a PRAM reset, CMD+Option+p+r...
Reset NVRAM on your Mac - Apple Support
In fact, do 3 in a row, takes a bit of time.
Intel-based Macs: Resetting the System Management Controller (SMC)...
Reset the SMC of your Mac - Apple Support
Have you done a PRAM reset, CMD+Option+p+r...
Reset NVRAM on your Mac - Apple Support
In fact, do 3 in a row, takes a bit of time.
Intel-based Macs: Resetting the System Management Controller (SMC)...
Reset the SMC of your Mac - Apple Support
HDMI connectivity issues on recent BIG SUR update
