Apple Event: May 7th at 7 am PT
MacOS 10.15.1 - After installing, every time I reboot my iMac my screen is set to the maximum brightness. I can adjust it in system preferences, but I have my screen calibrated to a specific brightness for photography. I have "Automatically Set Screen Brightness" UNCHECKED so it shouldn't make any changes. Any ideas how to keep the brightness set where I had it when I shut down.
iMac Line (2012 and Later)
iMac booting at full brightness - FIXED.
Thanks to Birkhoff92. This link (https://support.apple.com/en-us/HT201295) tells how to reset the memory. In my case it was as easy as:
The computer does boot with the display appearing to go to full bright. However, as it continues to boot the brightness returns to where I had set it prior to shut down.
Hope this helps
The 10.15.4 seems to fix it. Doesn't it?
It seems it indeed has fixed it. Least in my setup I can not reproduce it.
It appears the latest update quietly fixed this issue. Three days and a few starts and numerous wake-ups and no issues.
OSX version 10.15.4 seems to have fixed mine! That was a long wait!
macos 10.15.1 boots with screen at full brightness
