LaPorta
Well-known member
I've had this issue before, and I don't know why it happens or goes away. I just did a fresh install of 12.6 due to a serious system error on my 2020 iMac. It has an LED Cinema Display connected to it. Every time, I set each desktop to its corresponding correct desktop photo that I want. Every time I either restart or shut down the machine (then start it), both photos have reverted to the generic OS 12 photo. I just don't get it. To top it off, the preference file for the desktop photos shows the correct path to the photos I've chosen...it just doesn't seem to do it! I don't understand how in the heck to get this to work properly, or what causes the issue.