skylight errors in console after upgrading to 10.13.4

MBP (15" 2016) running OSX 10.13.4

Console is full of constant:

/System/Library/PrivateFrameworks/SignpostNotification.framework/Versions/A/XPCS ervices/signpost_notificationd.xpc/Contents/MacOS/signpost_notificationd (/System/Library/PrivateFrameworks/SkyLight.framework/Versions/A/Skylight)

Subsystem com.apple.SkyLight

0 is not a valid connection ID

What is this error and is there a way to stop it?

MacBook Pro TouchBar and Touch ID, iOS 11.3

Posted on Apr 5, 2018 9:24 AM

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2 replies

Owl-53

Level 10

106,233 points

Apr 11, 2018 6:45 AM in response to SJHiker

try this

With No Applications active>> Desktop>> GO>> Utilities and look for Activity Monitor. Open Activity Monitor. In top Right of Activity Monitor type signpost_notificationd. In main screen of Activity Monitor you should see signpost_notificationd. Click on that process until it is hi-lited. In Top Left of Activity Monitor look for First Icon that looks like a large X >> that should be Force Quit. Although you try to Force Quit it will not.

If you are successful, quit Activity Monitor and Open Console. Let it run 1 - 2 minutes. If all goes well all those Error messages related to Signpost_notificationd will have ceased ( only until the next reboot )

Good luck

Owl-53

Level 10

106,233 points

Apr 5, 2018 10:18 AM in response to SJHiker

come on over to this thread for addition info on this issue

hangs on "signpost_notificationd Skylight"

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skylight errors in console after upgrading to 10.13.4