whenever the notification banner that appears on the top right of my screen appears, it's covered by a smudge. I can't find any other other answers online that deals with this problem and it's starting to really annoy me.
Macbook notification banner smudge
macmacbook pro
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Best Answer
Try to completely disable Notification Center, reboot, then reenable.
To do so, (with caution, of course) try the following:
launchctl unload -w /System/Library/LaunchAgents/com.apple.notificationcenterui.plistReboot
Now re-enable Notification center:
launchctl load -w /System/Library/LaunchAgents/com.apple.notificationcenterui.plistI have searched in vain to find any information regarding a .plist or other file containing appearance settings for notifications thinking that somehow these had become corrupt.