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Weird monitor bugs people sent me in the last 5 years (2022)
I develop 🌕 Lunar, a macOS app for getting intelligent adaptive brightness on external monitors and controlling every aspect of your monitor using DDC and other obscure protocols. I get tons of email about Lunar, especially after it became my full time “job” in 2021. A lot of those emails complain about Lunar bugs, but sometimes, after a good multi day chase, I conclude it’s actually a monitor bug and the user has to kind of.. deal with it. *”Buy another monitor”* is never a good response, so I try to help and provide a workaround whenever I can. ...
It's possible that either a specific series of bytes, or a burst of DDC messages, causes the firmware to crash, and maybe even enter in a tight loop since it doesn't seem to restart itself. Most people don't know that there's no such thing as a 6 meter Thunderbolt cable, not without built-in signal amplifiers or fiber optics and expensive converter chips. So, expectedly, when using the data channel for DDC for longer than a few milliseconds, the video signal will drop completely, or revert to a much lower resolution and refresh rate.
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