Big Sur - Black Screen After Update?

WOW! I simply can't comprehend what's happening. I was 1 second away of pressing update now :)). Thank god I din't gambled my laptop on this update as I am pretty much dependent on working on it right now. I hope they fix this issue soon. The Late 2013 model was also on the supported list but since it's such a gamble...I prefer to wait.

Thanks for the heads up !

There are two reasons to use Apple products. The first differentiator is the (relative) emphasis on privacy.

Second, the closed ecosystem means typically a better and more coherent end-user experience. So when an official and approved software update kills the target hardware, that's inexcusable. I'm paying the Apple premium on the promise of "it just works." For this brand, it cannot be the case that the customer has to worry about engineering failures even five sigmas out.

Okay, fine, making things simple is hard. Mistakes happen. Now, the true measure of the company is how this is addressed going forward.

That's a nice story.

I have a MacBook Air 2019. Everything was ok till Catalina. Now I am on Big Sur. The ONLY program that does not work as before is Redshift Astronomy. It gives a Redshift black window. All the other windows (Safari, Firefox, Stellarium, ... ) are ok!! I have to select Display Preferences > Color > Select any Color Profile (Default is Color LCD). And then it works ok. If I go back to Color LCD profile: no problem. But if I Quit Redshift and I start it again I have to go back to Screen Preferences and do it all over again.

What is the solution: inflate the tires of my car or the tires of my trailer??

Stay healthy!!

You clearly don’t have a hardware problem, NoSubject.

So my car towing a trailer analogy doesn’t apply to your situation.

Instead, you simply have a version of Redshift Astronomy that isn’t quite ready for the new Operating System (OS).

That’s simply not surprising, in the slightest.

It is good that you have a workaround, for now.

My recommendation is that you look to see if there’s an updated version available.

mur_furious Update: Contacted Apple Support, they spent some time with me resetting NVRAM, SMC, rebooting at single-user or recovery mode, etc., which I had already tried. When that didn't work, got transferred to a senior system analyst that sent some software to copy system parameters and used a piece of software to capture information from the monitor. Waited a few days to hear from them but then the computer died- won't startup under any conditions. Just fedex'd it to Apple Repair yesterday and waiting to hear back. I suggest you back up now in case your computer dies, and contact Apple Support.

Mine got stuck too on the black screen and Apple logo and showing progress 90%done. If I restart with safe mode, will I lose any data?

you can have a look at If your Mac starts up to a blank screen - Apple Support

Ok.

I reinstalled Catalina but this does not fix the not working I/o board.

[Edited by Moderator]

I’m sorry to hear, mknell, that you seem to «have a disfunctional I/o board now.»

I have the same issue on my MacBook Pro 2016.

Unfortunately, online_david, the analogy was not, in any way, offered as a hardware solution.

It was only offered as a “solution” to understanding.

to your point, i have gone back to OS mavericks and it still behaves the same....trust me the damage is permanant

In addition, software update says my mac is up to date "Mac OS Catalina 10.15.7...rather than offering the Big Sur update the was there a few hours ago.

arslaan77. You are amazing! Perfect timing! It’s 9 AM here and I was just on my way to the Apple Store.