After upgrading my base M1 Air to 26.2, white lines are appearing around edge of the top 1cm of the screen. These lines appear, disappear and shift while moving windows around. It's very distracting, and certainly wasn't showing up on 26.1.
Is anyone else having this issue, and is there some way to get rid of it?
MacBook Air 13″, macOS 26.2
this is clearly a software issue. If you switch on "Show menu bar background" in the menu bar settings, it disappears completely.
[Edited by Moderator]
BGAustralia wrote:
This seems to be the case.
I'm glad you got it working but as you can see in the screen shot I posted, I don't have the menu bar background enabled and I have no white line. What setting do you have selected in System Settings > Wallpaper? If not selected, try "Stretch to Fill Screen".
BGAustralia wrote:
macOS creenshots don't capture the issue, but an OBS screen recording did. I've saved a frame from the video that shows it. The very top of the screen has a white line along it.
https://discussions.apple.com/content/attachment/c2c30b5d-9330-4e31-8946-3f487338a3a9
Interesting since I don't see any white line when viewing the image in Preview while Dark Mode is selected so I can make sure I am not missing the line since it occurs at the extreme top edge of the picture.
Usually if a screenshot or screen recording does not show the fault, it indicates a hardware issue with the Display Assembly. I'm a bit confused on the final result & solution here, but I'm glad you resolved it....I hope it is a permanent solution & not just a coincidence a hardware issue stopped at the same time (at least for the moment).
I've been using one of the default wallpapers (Southern Lights), so there is no fit to screen options.
I see. I have no "Southen Lights" in my Tahoe install.
White lines appear on M1 Air screen after 26.2 upgrade
