Background blurred after reboot

Most of the time, after I reboot, my background is the same fuzzy version of my experience that shows the login screen. There is also a dark alpha superimposed on the image channel. When I close a window on a standard desktop computer Finder, the Office on my 2nd screen will change. When I slip desktop computers, the image will be briefly clear.

Save and back to fixed the problem, but I would not have the problem in the first place.

End 2013 13 "MacBook Pro

external monitor connected to the Thunderbolt as DisplayPort port

El Capitan 10.11.3 and 10.11.4

Start your computer in Mode safe by closing and then restarting while holding down the SHIFT key.  Is your background blur as you can see on your login screen?

Tags: Mac OS & System Software

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