What's up with ColorSync in Sequoia 15.5?

[tommygun1950]

I'm new to MacOS. Luv my Mini M4 but have issues with custom monitor profiles. On cold boot the OS loads my profile just fine but when the system goes to sleep or comes out of screen saver the display profile reverts to what is I guess is the default, sRGB. I must reboot or shut down/restart to reload my custom display profile and that's a pain in the a$$. I need to have a properly calibrated monitor for photo editing. Suggestions?

 

[Slartibart]

just to have no ambiguity here: after e.g., waking the mini the sRGB profile is reported in the monitor settings and not your custom profile?
Further: and you cannot change the profile back in Settings>Displays but have to reboot? (I understand that that is still annoying, but want to know wether that works).
If you can not change the profile via the system settings after it has switched, reboot in safe mode and delete
~/Library/Preferences/com. apple.system preferences.plist - then restart and assign your profile.

 

[tommygun1950]

You have it exactly correct, no ambiguity. Just to be safe I copied that prefs file to an external drive before going through your procedure. So far it's working, thank you! Just out of curiosity, after restarting, I looked to see if the system recreated that prefs file. It did not, so where did it come from in the first place?

 

[tommygun1950]

You have it exactly correct, no ambiguity. Just to be safe I copied that prefs file to an external drive before going through your procedure. So far it's working, thank you! Just out of curiosity, after restarting, I looked to see if the system recreated that prefs file. It did not, so where did it come from in the first place?

Found the problem! As I said I'm new to MacOS. After 4 sessions with Apple Tech Support I was able to determine that a 3rd party app was breaking ColorSync, namely CCleaner. I used it extensively on my Win10 box to clean up the bloated log files, browser caches, etc., but the Mac version appears to go way overboard and deletes the current ColorSync settings causing the system to revert to defaults. Adios CCleaner...

 

[hobowankenobi]

Generally speaking, there no helper apps like CCleaner that will make your Mac better, faster, or more reliable.

Occasionally, some troubleshooting needs to happen, but many Macs go their entire existence without need of any 3rd party apps to fix or clean anything.

Less is more.