My Mac is a MacBook Pro Late 2011 model with the 15 inch screen.

It began all with me, connecting my Nexus 5 to the Macbook. I imported some videos with iTunes (yes, iTunes popped up automatically and I though I just give it a try). In the import process, the mac suddenly hung up and gave me a gray screen! I then restarted the mac and since then, I have these strange LCD problems on the boot up and crashes as well in normal operation. I never had any problems with my mac so far, so it must have something to do with me connecting my nexus to my mac!.

The Problem

It's not reproducible for me but sometimes when I boot my mac, some strange lines appear on the LCD and after that, the mac hangs up (all I can see is a gray screen with no content). The mac also gets very loud at that moment. I have to restart and try it over and over again until I can finally login.

Picture of the boot-screen (I zoomed intentionally so you can see the lines):

Then, sometimes in normal operation, my mac freezes and the lcd displays the same lines as shown above (but with other colors: sometimes just blue, sometimes red and blue etc.). I also can provoke a crash when I connect my Thunderbolt Display to the thunderbolt port. But this does not cause a crash everytime AND sometimes it just crashes with no monitor connected to it.

What I tried so far:

  • Make the apple hardware test (normal and extended) --> no failures were detected.
  • Make a clean install of OSX 10.10.3.
  • Restetted NVRAM and SMC. (both before and after clean installation)
  • Changed the internal storage from an SSD to the original HDD from apple.

None of it solved the issue.

Additional Informations:

  • EtreCheck report: http://pastie.org/private/jvogbqnurymvffvzbslxsq
  • Currently installed OSX Version: 10.10.4
  • Used SSD: Samsung SSD 840 PRO Series (256GB)
  • Used Trim Enabler for the SSD (now known as Disk Sensei)
  • I have currently no kernel extensions installed.

  • This message appears on every boot (in SUM):

AppleUSBMultitouchDriver::checkStatus - received Status Packet, Payload 2: device was reinitialized

  • Restoring the mac over the internal recovery partition did not work.
  • Restoring the mac over the air did also not work.

  • Today, /sbin/fsck -fy failed on the startup and I had to repair the volume (Maybe the SSD is damaged?).

  • I'm also experiencing kernel panics. Sample log: http://pastie.org/private/i5j5cuv0isb9ttjnllia

  • Nexus system informations:

    • Android Version: 5.1.1
    • Kernel Version: 3.4.0
    • The nexus is not modded in any way.

Just got another crash with a new type of failure:

Here is a screenshot of the single user mode after the crash: (note the green lines in the background)

  • Im sorry what did you meant?
    – Marco
    Jul 25, 2015 at 4:00
  • Run the Apple Hardware Test to check your hardware.
    – Ruskes
    Jul 25, 2015 at 4:03
  • 1
    OK, then run this system profile check that might tell us more: etresoft.com/etrecheck
    – Ruskes
    Jul 25, 2015 at 4:09
  • 2
    Instead of single user mode try the Verbose mode to see where it gets stuck. I would also do the disk permissions repair and disk check. Since you have kernel panics without 3d party app installed it could be your hardware ...com.apple.driver.AppleIntelCPUPowerManagement ? and com.apple.driver.AppleHWSensor ?
    – Ruskes
    Jul 25, 2015 at 4:17
  • 1
    I noticed you reset the NVRAM but did you try a PRAM reset? Instructions here.
    – bjbk
    Jul 29, 2015 at 20:18

1 Answer 1


This is probably caused by the famous GPU problem these MacBook have. Do a search on Google for Late 2011 MacBook GPU problems and you will find loads of information about this. Apple finally recognized the manufacturing error and has a program in place to replace the logic board under warranty. I had mine replaced a couple months ago with no costs at all.

  • Yep, did go to an apple store and they replaced it.
    – Marco
    Aug 13, 2015 at 20:18
  • Nice!! Glad to be of help!! Aug 15, 2015 at 6:13
  • Did you have any problems after replacing the logic board? Heard you should make a gpu stress test to verify the replacement.
    – Marco
    Aug 15, 2015 at 18:39
  • No, i didn't do a GPU test. I just use the MBP as i did before and it behaves as it did before. I guess they replaced the logic board with an identical one. So i suspect we will have the same issue again in a couple of years. These GPUs just get way too hot. Aug 17, 2015 at 16:25
  • 1
    It's 6 years later now and the replacement board also broke. Unfortunately no warranty anymore so i disabled the GPU using these instructions: gist.github.com/cdleon/d1eff7246a25193304284ecec40445b0 Sep 21, 2019 at 16:09

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .