Why is my wallpaper blank after updating to macOS Sonoma?

Background screen

My iMac 2019 is doing the same. Upon reboot, the Lock Screen appears with my desktop wallpaper but as soon as I enter my user name and password, it goes black while it builds my desktop. Desktop icons, menu bar and dock come back but not the wallpaper jpeg I have set. Just black..

Until Apple fixes this, this will make work.

Open Terminal.

Write: killall Dock

And your set wallpaper will be restored.

You can likely: Customize the wallpaper on your Mac - Apple Support

More info: Wallpaper options: Wallpaper settings on Mac - Apple Support

No, you can't just choose a wallpaper or customize a wallpaper and fix this. I have the same problem Truck1500 posted about. At first, the wallpaper was showing up -- immediately after the update to the new OS. But my computer crashed, and upon restart, no wallpaper. I can't even change the color to a different, solid color. It's just bugged out on that feature of even having a wallpaper display.

Thank you for kindly posting your solution to the community!

Thank you for sharing your experience with the community.

You may want to send feedback to Apple so those who work behind-the-scenes can see the extent of the problem. If others in the community are experiencing this issue, we may see an update that addresses the issue:

Product Feedback - Apple