![]() The OS continues to try for 30 minutes from my experience. Its only been 1 day but yesterday is the first day where my MAC has not ran WindowServer at high CPU utilisation early in the morning or late in the afternoon.Īt a guess here, it appears that there may be a bug in 18G95 where the OS is attempting to perform Night Shift on the external Monitor and is falling for some reason. To cut a long story short, after discussions with Apple over the fact that the DisplayServer in 10.14.6 18G95 apparently gets confused and generates large amounts of kernel DisplayBuffer Logging trying to switch between display resolutions of the same resolution (see previous link) apple suggested disabling Night Shift. ![]() I've spent many hours at this and trying to address what the problem is. This does not seem like a Displaylink issue but it is the obvious visible impact. Last resort is back to High Sierra and surrender on Mojave to see if the problem goes away. I've got a message over at Apple Communities but absolutely no responses at all. The logs for this vary between occurring every 20ms to far less than.that. I've been trying to get to the bottom of what is happening but appears that something sets the kernel off and it says that it is flipping the Display. ![]() This means that the DisplayLink Drivers hit about 140-160% CPU while WindowServer hits 40%. I suspect that with Displaylink Drivers installed the problem is more pronounced because of the fact that I think the Drivers are trying to stay in sync with the DisplayServer. Without DisplayLink installed and at 17:39:26 each day the WindowServer process goes high CPU to approximately 40% and remains there until 18:10. ![]() I've trashed Mojave again and reinstalled office and a few minor other applications. ![]()
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