Secondary Desktop Wallpaper Disappears

Just installed Mojave - Running dual screen (as I always have). Set my desktop wallpapers for both displays (as the same image too, as I always have). Ran for 3 days fine, no issues (as usual).


Today, every time I reset or turn off and back on the computer, the secondary desktop wallpaper reverts back to a desktop I had prior (right after OS instal a few days ago). The 1st display wallpaper stays. The STRANGE thing is, when I am logging in after reset or turn on, the wallpaper is correct ! Then once I finish log in, it zaps to the older wallpaper.


Any thoughts as to what could cause this ? And mainly how to fix ?


Thanks !

MacBook Pro 15", macOS 10.14

Posted on Oct 17, 2019 5:12 PM

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Oct 23, 2019 3:13 PM in response to Roulette Records

Hi Roulette Records,


Thanks for coming to Apple Support Communities for help today with your wallpaper on your second display. It sounds like the second display reverts back to an older wallpaper.


Check out this page: Change the desktop picture (background) on your Mac. Make sure everything is set up correctly. Notice that in Mojave "you can also choose from Dynamic Desktop images, which automatically change throughout the day based on the time of day in your location."


If that doesn't resolve the issue, try resetting the NVRAM: Reset NVRAM or PRAM on your Mac.


If the issue continues, try testing inside a new user account: How to test an issue in another user account on your Mac.


Let me know how that goes.


Have a fantastic day!




Oct 25, 2019 2:40 AM in response to Joseph_S.

Hey Joseph. Thanks for chiming in. As much as I appreciate the input and help, it took so long to get a response here I actually solved the issue on accident a day or two later. But it was solved the worse way something can be solved. It solved itself ! lol I did nothing.


I hate it when things do that, cause technically nothing really fixed it. So it could do it again anytime. But so far its been about a week and all good.


I basically just kept resetting as I did (and yes I was doing it all right and according to proper protocol.) and one time it just has stayed. The only thing that I can think of is, since this is a new OS for me on a freshly cleaned drive, I have been reinstalling tons of my apps for work (Pro Tools, hundreds of plugins, etc..) so its possible one of them installs made something goofy for a sec and then the next instal fixed it ? IDK ? But its literally all that's changed.


That said folks, we are all good on this end. Thanks for the help.


Odd, I do have to say one thing - what happened to these forums ? Used to be way more popular, I used to get responses within minutes to a hour max. Within a day there'd be several responses. Now, this is the second time I've posted something and I just hear crickets and see tumbleweeds blowing by.


Apple got the sign in procedure like we are logging into our bank, now no one wants to come here. Its a real hassle just to log into a forum, this aint the pentagon, come on ! lol. Its really dead here. Might have to choose to find a new more populated forum on Apple help. Any suggestions ?

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Secondary Desktop Wallpaper Disappears

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