How To Fix OS X 10.11.1 White Screen Update Problem

Posted: Oct 21 2015, 3:48pm CDT | by , in News | Apple


How to Fix OS X 10.11.1 White Screen Update Problem

The first OS X El Capitan update arrived and I ran into the White Screen problem. Here is how I fixed it.

Apple released today the first update for OS X El Capitan. I was eager to install OS X 10.11.1 because of promised Mail bug fixes. As reported earlier this month, I encountered severe issues with Mail and Kernel_Task, rendering my two iMacs unusable due to CPU load.

I downloaded and started the OS X 10.11.1 update. After rebooting, the iMac would stay on a white screen and not continue to complete the load to the login screen. I tried reboot and again it hanged at the white screen. Then I did the usual reset of the SMC by unplugging the power cord. No change.

I then booted in the single user mode by holding down Command-S to run a check on the disk. I ran  /sbin/fsck -fy on the command line, but there were no errors.

I took to Google and found the solution to my OS X 10.11.1 update problem - Safe Mode.

Holding down Shift while rebooting starts up OS X in safe mode. It is much slower as hardware acceleration of graphics is switched off. The short wait though paid off. My iMac continued to load to the log-in screen. After log-in, the OS X 10.11.1 update process continued and finished within a couple minutes. After restarting again, the iMac booted up without any problem with OS X 10.11.1 installed.

Apple says about Safe Mode, that it loads only required kernel extensions, prevents Startup Items and Login Items from opening automatically, disables user-installed fonts, deletes font caches and kernel cache and other system cache files. One of these things is responsible for hanging in a white screen during the upgrade to OS X 10.11.1.

OS X 10.11.1 as said has several fixes for Mail. So far Mail works fine, but last time the problems started to appear after a couple of hours. I will report tomorrow if OS X 10.11.1 indeed fixed the Kernel_task and high CPU usage issue.

Other fixes in OS X 10.11.1 include improved installer, fixes issues with Microsoft Office 2015, resolves Audio plug-in issues and most notably adds 150 new emoji characters. I personally don't know why one would need 150 additional emojis, I give it the middle finger after these upgrade woes, which actually is one of the new emojis.

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The Author

<a href="/latest_stories/all/all/2" rel="author">Luigi Lugmayr</a>
Luigi Lugmayr () is the founding chief Editor of I4U News and brings over 15 years experience in the technology field to the ever evolving and exciting world of gadgets. He started I4U News back in 2000 and evolved it into vibrant technology magazine.
Luigi can be contacted directly at




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