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I had a TB3 dock with dual displays that was causing my 2019 16" MBP to KP sometimes*. I replaced that with individual separate DP adapters. Then I realized, if
by hot_gril 4y ago
I had a TB3 dock with dual displays that was causing my 2019 16" MBP to KP sometimes*. I replaced that with individual separate DP adapters. Then I realized, if I always connect the screens in the same order with a few seconds' delay in between, I get the correct screen arrangement, I think. Not 100% sure because sometimes I forgot the ordering, haha.
* Which btw is the kind of rabbit hole that belongs in this article. That was a high-end CalDigit dock, so seeing KPs was surprising. These monitors even had USB-C inputs, but connecting both at once wouldn't work with this MBP model in particular due to a known incompatibility with its dedicated GPU. Older, newer, or lower-end MBPs were fine. Hence the dock adapting to DP. Another funny quirk is I was able to connect my Mac twice to the same screen (via USB-C and DP), and it thought they were separate screens.
- lenocinor 4y agoI get kernel panics with my CalDigit dock too! Only since the most recent OS update though. Your post is inspiring me to unplug one monitor when I’m not using it and see if it helps. Thanks for the unintended suggestion!
- hot_gril 4y agoYou're welcome. This inspired me to write an HN post, "Treating USB-C as technical debt rather than a feature."