I have upgraded my 2018 mac mini to MacOS Catalina and now have pink boot screen every time the computer starts. The OS and all the applications appear to work ok after startup. I have tried the alt+command+R+P at boot to clear NVRAM which I found on an old forum post which worked on the next restart. But at the next cold boot I was back to the pink boot screen. Has anyone else come across this?
I fixed my full time pink screen issue, here is the solution.
The reason it is having an issue, is after the update, the signal being sent is YCbCr instead of RGB like your monitors are expecting. Some people with panels like mine will get pink, others likely get no signal recognized. This script works by setting up a profile for your specific monitor, and having it be forced to be RGB, if you connect it to another model monitor with the same issue, this process will need to be repeated for that monitor as well.
Hope this helps everyone! if you have issues look in the comments on the script page, the author is active.
My machine is a Mac mini (2018) i7 64GB 1TB. My monitor is a 28 inch Hannspree HF289H monitor
“It lasts a few seconds and only during startup.”
So how is that problem? You might as well say you’re unable to surf the Internet or check mail during startup. Of course they won’t work during startup.
Startup means not yet ready. Ignore the brief blinking, coloring etc. and await the logon screen. At that point (and not before) Catalina’s ready. Login and enjoy...
Well It indicates that there is something not quite right with the OS if the issue wasn't there before upgrading. And the concern is this could potentially manifest into other issues later down the line. So for information I have had several support calls with Apple and they are just as stumped. The best they have been able to offer is to clean install the OS which isn't really ideal as I have quite a few apps installed. From my own trouble-shooting I have worked out that it is related to NVRAM. If you boot while holding alt+cmd+R+P then the machine boots with the usual black logo screen, but at the next reboot it is back to pink. I am just putting this out there to see if others are having this issue. Any ideas of things to check would be greatly appreciated.
It indicates nothing of the sort except that startup in a minute number of cases is a bit more colorful. Not slow, not noisy, colorful. Furthermore, your concerns about future issues have now been transferred to Apple who’ve appreciated your doing so and will presumably take them into account if relevant and at the appropriate priority .
Fact remains that the functionality of your machine has not changed materially. In fact if you allow it complete startup, functionality has actually been enhanced. You’ve done your bit with reporting. Now login and get on with using your machine, that’s what matters most to both to you and also Apple.
Bottom line (also shortest): Enjoy...
No. Tried three different monitors (and HDMI cables) - none worked with Catalina - all work with High Sierra and Mojave.
If Catalina does not support three different monitors (from three different manufacturers - Samsung, BenQ and Lenovo), then it has a serious problem.
THis is a dismissive and not helpful response - there clearly is a problem that may have other less "benign" implications going forward.
My Mac Mini 2018 has this "Pink sceen" issue after upgrade to Catalina, and I've just had my first (and only) anomalous "hang" on waking from sleep (just the wallpaper showing, no dock showing, no menu bar) - had hold down the the power button to restart.
Never happened once under Mojave in over 6 months of use.
So please be more repsectful and mindful of other posting.
It seems that this is an issue that is affecting mainly mac mini users. I posted to see what steps that have been attempted by others to try and resolve this. I have had support from Apple but this has baffled them too. The best they can offer is to either reinstall or wait for a patch. To be honest I have quite a bit of software installed and I am not prepared to clean install everything just for a pink boot screen. I have had absolutely no issue prior to the upgrade and the pink boot screen is not affecting the performance of the machine. I am convinced that there is a config setting in NVRAM at preboot that is causing this. I will continue to dig around and post when I find a resolution. Thanks to everyone that has responded.
Not really. It means that hidden bugs in your monitor have now come to surface. You have an old dog running obsolete HDMI 1.0, give it away to the local school and get something spanking new.
Trust me, Catalina will be thrilled. She’s really not into older monitors. And picky about the newer ones, especially brash, wide-chested Samsungs with gimmicks galore, not to mention cheap LGs without thunderbolts. It’s no secret, Catalina can barely keep awake with them.
Good luck.
I have this same issue and have been on the phone with Apple support for hours, and in and out of the Apple store multiple times. Bought my Mac mini in Jan 2019. No issues until the day it met Catalina. No one knows how to fix it and Apple will jot exchange my Mac. I spend tons of money with Apple and I can’t believe this lack of service.
No
Rebooting to safe mode will give a black logo screen, but at the next reboot it is back to pink screen.
Thanks for your non help.
Thanks for the suggestion. Apple did say maybe to hold out to see if there’s a patch firstly before going down the reset route.
You’re welcome! Seriously, shrug it off, you won’t regret it.
Just tried safe mode. It did not work. Same status during boot.
I agree, but right now it is not annoying to that point. I'll wait for a patch. Thanks for trying to help.
Pink Boot Screen after Catalina upgrade.
