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fenjen

macrumors 6502
Original poster
Nov 9, 2012
352
24
The photos attached are of my girlfriends MacBook which is from 2017. The grey bar mostly shows up on white and very light grey colours. On a lot of colours it seems to be non-existent. Does anybody know what this could be? Since it is dependent on the color on the screen it doesn't seem to be the backlight. I opened up the MacBook, cleaned and reseated the display cable, so that isn't it either.
 

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circatee

Contributor
Nov 30, 2014
4,450
3,011
And if you press lightly on the side of the display, does it change somewhat?

Also, was anything sitting on the laptop prior to this happening?
 

fenjen

macrumors 6502
Original poster
Nov 9, 2012
352
24
And if you press lightly on the side of the display, does it change somewhat?

Also, was anything sitting on the laptop prior to this happening
Pressing does not seem to change anything. Also nothing was sitting on it. It has taken a fall inside a bag once, but the fall only damaged the bottom case and on the other side as well.
 

circatee

Contributor
Nov 30, 2014
4,450
3,011
My IT brain is starting to kick in. When you power on the unit, and NO ONE is logged into it, do you still see said grey bar?

If you do not, I would create another account on the unit (if there is not one), then log into that account.
Once done, confirm if the grey bar is still there. Wondering if it is 'profile' related, versus hardware...
 

fenjen

macrumors 6502
Original poster
Nov 9, 2012
352
24
My IT brain is starting to kick in. When you power on the unit, and NO ONE is logged into it, do you still see said grey bar?

If you do not, I would create another account on the unit (if there is not one), then log into that account.
Once done, confirm if the grey bar is still there. Wondering if it is 'profile' related, versus hardware...
We wiped the whole pc and it's still there. It's also present in recovery mode. The weirdest thing to me is that it only shows up on light colors. So that means it cannot be a backlight problem, that would dim every color equally in that region (also I don't think the macbook has local backlight, right?). So I'm kind of at a loss what it could be. As far as can see, the display has taken no damage at all.
 

circatee

Contributor
Nov 30, 2014
4,450
3,011
(also I don't think the MacBook has local backlight, right?). So I'm kind of at a loss what it could be. As far as can see, the display has taken no damage at all.

Not sure about the backlight answer. However, if you use the keys on the keyboard to make the screen brighter/darker, do you see any differences?

Also, as a test, set the Desktop wallpaper to colour only, and choose black. Then see if you can still a part of it showing 'grey', versus full black. Try with another colour, too. Based on the results of this, the issue is more than likely hardware, versus software/drivers...

EDIT:

Last thing I would try, if you have the items available to, I would connect the MBP to an external monitor. Then see if the same thing transposes to that monitor. I would expect it to not. But...
 

nomacic

macrumors newbie
Feb 1, 2021
1
0
Just want to chime in to say I have the exact same issue. Light Grey overlay on the left side of screen.

If I reset the NVRAM on startup then it goes away for sometime usually but will always come back. What is this thing? On a 2019 16inch

IMG_0221.JPG
 

fenjen

macrumors 6502
Original poster
Nov 9, 2012
352
24
Just want to chime in to say I have the exact same issue. Light Grey overlay on the left side of screen.

If I reset the NVRAM on startup then it goes away for sometime usually but will always come back. What is this thing? On a 2019 16inch

View attachment 1723393
Interesting! I never found out what it was as we sold it. Let us know if you do find out.
 

vwarlpn

macrumors newbie
Jun 26, 2021
1
0
So.. Did anyone find a solution? I have the same issuse , but on mid-right side of screen, on my M1 Macbook pro. Please help.
 

GumaRodak

macrumors 6502a
Mar 14, 2015
581
359
Create a screenshot and open the jpg in preview.. make it smaller and move it out of the affectet area. If the grey bar is not on the screenshot, it is a display issue most likely…
 
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