Display Issue - Horizontal blue lines in application windows

Apple support has no idea. The issue is NOT only with Chrome, it is with a lot of different applications. Unreal 4, and Unity game editors, Chrome, Edge, Teams, Apple Maps, and more.

I am hopeful, but they may have fixed it again in Big Sur beta 4. So far no issues.

Big Sur Beta 8 - the issue still exists! Beta 1 & 2 were fine, but the issue was re-introduced on Beta 3

Same thing for me. I have super expensive dongles, the problem happens with different dongles and external monitors, and also without any external monitor.

Having exact same issue. nvram does not help

Version: 10.15.4 (19E287)

MacBook Pro (16-inch, 2019)

2,6 GHz 6-Core Intel Core i7

16 GB 2667 MHz DDR4

AMD Radeon Pro 5300M 4 GB

Intel UHD Graphics 630 1536 MB

I don't know about everyone else here, but I'm getting pretty sad that I spent $3k on a computer, and Apple doesn't even have the decency to respond to an issue like this. #notwinningatcustomerrelations #firsttimetoeverconsideraPC

So I have an older "Apple LED Cinema Display 27-inch (2560 x 1440) AMD Radeon Pro 5500M 4 GB graphics" external monitor hooked up to my computer all the time. I'm starting to wonder if this monitor is somehow causing this to happen? I'm also using a cheeper dongle to attach the monitor. What kind of monitors and dongles do other people have hooked up? Does this happen to anyone when there is no external monitor?

Yeah, would like to update that after working for an hour or so it's just blue line freezing, crashing and restarting in cycle now. I've had to switch to my wife's Windows laptop, may not switch back now haha. Not the best outcome

Thank god I found this threat! I also have the same issue, mostly with whatsapp desktop app and yesterday also had it with youtube (firefox browser)

New 16 inch macbook, bought one month ago..

I was already scared there might be a problem with the graphic card ..

Apple, please help...

I'm dealing with the same issue.

I also experienced this issue in Chrome, MSTeams, Battle.net desktop app.

Disabling hardware acceleration is not a solution, since every app works way too slow and it feels like being on a cheap and old computer.

Apple, please act on this issue. We are professionals working on this machine 8 hours a day, and when these issues occurs, we lose valuable time, since we can't see any content from all the blue lines.

Also updated to v10.15.5, and have not run into the blue lines problem (but have been running into a new problem where leaving the computer on idle would cause it to “shutdown unexpectedly” instead of sleeping.. 🙃).

restarting the computer bring up the alert with a similar message-“Your Mac shutoff unexpectedly. Restore previous windows?”

but this is a whole different issue that I would have to address on a different thread 😵.

What a frustrating problem - you invest so much in what everyone says is the latest and greatest solution and you get this kind of issue. I too am on 16 inch, 10.15.5, external monitor and am seeing this regularly on Chrome or Brave browsers.

Initially I was seeing it only once a week but it has happened several times today already. Very frustrating.

I have the same issue in Chrome and then Notion.

I am using an external monitor and I put my Mac to sleep overnight. Will try a couple of suggested solutions mentioned above but really hope Apple will fix this soon.

Here is my Mac info:

I got off the phone with a customer support from Apple and he said since the issue seems to stem from Chrome, we will have to wait for Google to fix it. Glad that the next update will get this resolved though.

Same issue: Pathfinder app, YouTube, etc. all suffer from the blue lines syndrome. Worth mentioning that it's not limited to the new 16" MacBook Pro and current OS X (which I hoped would solve the problem)—this issue has persisted for the previous two OSX versions.

I also experience random overnight restarts and believe that it's related to leaving a browser window open—but I can't confirm if it's a Safari or Chrome problem. All I know is that the restarts don't happen if I close out of all browsers for the night.