macOS Console Log Flooded with 'WindowServer com.apple.SkyLight Invalid actual_host_time' error

Searching online, I see several reports of this error associated with external displays from macOS 10.x days, but I see nothing recent. Furthermore, I am not using an external display.


Well over 90% of all console log errors are for the above message, and it is running into GB of data.


What do I need to do to fix this problem?


Thanks!


[Re-Titled by Moderator]

Original Title: macOS Console Log Flooded with Error: WindowServer com.apple.SkyLight Invalid actual_host_time received from display: 0x1 new time: yyy last time: xxx

MacBook Pro (M2 Max, 2023)

Posted on Sep 5, 2025 5:54 PM

Reply
1 reply

Sep 6, 2025 3:59 AM in response to JRK Apple Discuss

JRK Apple Discuss wrote:

Searching online, I see several reports of this error associated with external displays from macOS 10.x days, but I see nothing recent. Furthermore, I am not using an external display.

Well over 90% of all console log errors are for the above message, and it is running into GB of data.

What do I need to do to fix this problem?

Thanks!

[Re-Titled by Moderator]
Original Title: macOS Console Log Flooded with Error: WindowServer com.apple.SkyLight Invalid actual_host_time received from display: 0x1 new time: yyy last time: xxx

The System Log files are normally pruned by the operating system 


There must be some very specific reason why the User ( you ) find it necessary to search the System Log Files 


Is there a specific performance issue occurring on the computer ?


If so, please try to outline this issue with as much detail and possible 


A word to be wise 


Most of what does appear in these log files are rather useless to use


Not since about OSX 10.6 Snow Leopard were the Console Log files useful for Trouble Shooting


Most , if not all , the entries are basically gibberish except for maybe  Apple Engineers


Who would need to run the log through a Special Software they have,  in-order to truly understand what it is saying / indicating

macOS Console Log Flooded with 'WindowServer com.apple.SkyLight Invalid actual_host_time' error

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