Strange lines on screen only in Time Machine

I have some strange vertical and horizontal lines when I enter in Time Machine.

I've checked for errors on the the graphic card but it's working fine.


Specs:

macOS Sierra 10.12 (16A320)

iMac (Retina 5K, 27-inch, Late 2015)


User uploaded file




User uploaded file

iMac with Retina 5K display, macOS Sierra (10.12)

Posted on Oct 19, 2016 11:13 AM

Reply
84 replies

Jul 25, 2017 7:09 PM in response to macnovicius

This is ridiculous and constitutes a major defect - together with some other issues referred to on these boards. Apple is doing nothing about this despite informing me it is with "engineering". I have raised this with Apple since October 2016 and there is no resolution in sight. I have written to Apple Australia (by post as no email is available!) and demanded a full refund.

Oct 20, 2016 8:38 AM in response to mihael.tomic

Hi!


Thanks for posting your concerns in the Apple Communities. If you are seeing some abnormal lines on your display when entering the Time Machine app, try resetting the NVRAM. How to Reset NVRAM on your Mac

What is NVRAM?

A small amount of your computer’s memory, called “non-volatile random-access memory” or NVRAM, stores certain settings in a location that OS X can access quickly. The settings that are stored in NVRAM depend on the type of Mac you're using, and the types of devices connected to it.

Information stored in NVRAM can include:

  • Speaker volume
  • Screen resolution
  • Startup disk selection
  • Recent kernel panic information, if any

If you experience issues related to these features, you might need to reset the NVRAM on your computer. For example, if your Mac starts up from a startup disk other than the one you've specified in Startup Disk preferences, or if a question mark icon appears briefly when your Mac starts up.


Restart normally after the reset and test the Time machine app. Let us know if it works for you. Have a great day.

Oct 20, 2016 12:50 PM in response to mihael.tomic

Great question. Yes, you can calibrate your current profile to see if that resolves it. Try placing a check mark in the box that says "Show profiles for this display only" You can then select each one and test the Time Machine app to see if the lines go away as well. Please use the links below for assistance.


macOS Sierra: Calibrate your display


macOS Sierra: Set your display’s color profile​

Oct 20, 2016 1:11 PM in response to chris_g1

It's still the same. But in ColorSync Utility i have these errors (I don't know of this is related in anyway with topic, but I'll post it here):


Searching for profiles...

Checking 79 profiles...

/Library/Application Support/Adobe/Color/Profiles/RedBlueYelllow.icc

Tag 'pseq': Required tag is not present. Could not be fixed.

/Library/Application Support/Adobe/Color/Profiles/Smokey.icc

Tag 'pseq': Required tag is not present. Could not be fixed.

/Library/Application Support/Adobe/Color/Profiles/TealMagentaGold.icc

Tag 'pseq': Required tag is not present. Could not be fixed.

/Library/Application Support/Adobe/Color/Profiles/TotalInkPreview.icc

Tag 'pseq': Required tag is not present. Could not be fixed.

Repair done. 0 out of 4 profiles fixed.

Oct 20, 2016 1:58 PM in response to mihael.tomic

I understand. This could be related to the lines, but really can't be sure of it. Very strange that it is only occurring within the Time Machine app. Let's see if this is a system-wide issue, by testing in a new user:

How to test an issue in another user account on your Mac

If it happens in a new user then I would recommend reinstalling macOS Sierra to see if that will resolve it. You can reinstall without losing any data on the Mac at all.


macOS Sierra: Reinstall macOS

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Strange lines on screen only in Time Machine

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