I have this same issue with my LG ultrafine monitor as this post: Blue tint with LG 4K HDR display - Apple Community
It only went blue after updating to updating to Sequoia 15.5 (main display)
Any ideas - it would be so consequential that it is dead or dying now after the update
MacBook Pro 16″, macOS 15.5
Could be any number of System Settings that changed.
1) Go to System Settings > Accessibility > Display
Turn Off Increase contrast
Turn On Reduce Transparency
Set the Display contras slider to Normal
Then scroll down to the bottom and Turn Off Color Filters
2) Go to System Settings > Appearance
Turn Off Allow wallpaper tinting in windows
3) Go to System Setting > Displays
Check Color Profile
Turn Off True Tone
Click on the Night Shift... set Schedule to Off and click Done
Could be any number of System Settings that changed.
1) Go to System Settings > Accessibility > Display
Turn Off Increase contrast
Turn On Reduce Transparency
Set the Display contras slider to Normal
Then scroll down to the bottom and Turn Off Color Filters
2) Go to System Settings > Appearance
Turn Off Allow wallpaper tinting in windows
3) Go to System Setting > Displays
Check Color Profile
Turn Off True Tone
Click on the Night Shift... set Schedule to Off and click Done
Probably not the issue, but I would first check the on-screen settings of that LG display.
Then if the settings seem OK, I would test a different cable out to that display.
tried different computers and its definitelty the monitor. I will close this thread
Tried them all and none fixed. I am starting to think its a LG issue...but the coincidence is crazy.
I have another LG monitor connected and obviously the macbook M1 Pro Max monitor both fine but my MAIN DISPLAY is the issue
Sorry to hear that, thanks for the closing message.
blue tint LG UltraFine Monitor
