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MacOS 10.15 Catalina Bug: LG 5K Display Resets to Maximum Brightness Every Reboot

[2020-01-22 17:56:59]

Lloyd Chambers: There are so many bugs in Catalina that I could spend weeks writing them up. Here’s one that is not just eye-popping (literally), but of great annoyance to me as a photographer — I need the display to remain stable and predictable. After every reboot, the LG 5K display goes to maximum brightness. Chambers quotes from several others encountering the same issue. A DF reader — also a professional photographer — wrote to me about this bug last week. He (the DF reader) was using a $6,000 new 16-inch MacBook Pro. I say was, past tense, because after a few days he returned it because this brightness issue was no small thing for him, because he sets his display brightness precisely using a display calibrator. Doing this several times per day every day quickly drove him mad. Is this the worst bug in the world? Not even close. It’s a paper-cut bug. No data loss, no crash, not something sort of thing where something doesn’t even work — just an annoyance. But no one wants to use a tool that gives you half dozen paper cuts every day. And MacOS 10.15 is chockablock with paper-cut bugs. And it’s not like the LG 5K Display is some obscure unsupported display — it’s the one and only external 5K display sold by Apple itself.  ★ 

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