its rather annoying as its only a few days old and just started doing this today.
ive even tried re installing the OS and repairing the HD with disk utility and its still happening.
youtube link attached will show the issue
You video is not alarming in the slightest.
At startup, the display is driven with a very simple brute-force Driver with no acceleration. Part way through the startup process, that Driver is replaced with the Fully Hardware accelerated driver that will be used at login and afterward.
The momentary blanking of the screen while it switches over Is expected behavior, and is not an indication of ANY problems whatsoever.
It might be less startling if a different picture were used before and after the Driver installation, But we did not get to make that choice.
You video is not alarming in the slightest.
At startup, the display is driven with a very simple brute-force Driver with no acceleration. Part way through the startup process, that Driver is replaced with the Fully Hardware accelerated driver that will be used at login and afterward.
The momentary blanking of the screen while it switches over Is expected behavior, and is not an indication of ANY problems whatsoever.
It might be less startling if a different picture were used before and after the Driver installation, But we did not get to make that choice.
That's odd.
Every computer running MacOS has always done this, but it usually is was not visible because the display was not warmed up yet.
Have you changed the display resolution? The default used at startup is very coarse, like 800 by 600, whereas the one you use after login will be much higher.
It would be helpful if you explain, in words, what you mean by "glitching".
ahh sorry, heres the video. https://youtube.com/shorts/Jh1q6UzfStY?feature=share
ok thanks, im glad its nothing to worry about.
my only concern is that the macbook was not doing this when it was new, now after a few days it starts...
My new Macbook Pro M1 chip is glitching at the login screen, why?
