OS X 10.11.1 Update Fixes Mail High CPU Load Problem

Posted: Oct 22 2015, 9:50am CDT | by , in News | Apple


OS X 10.11.1 Update Fixes Mail High CPU Load Problem

The first OS X El Capitan update has arrived and fixes serious issues with Apple Mail.

I like open source, but the weeks with Thunderbird have been not easy for me. My eyes are so trained on Apple Mail, that it was hard for me to scan my hundreds of mails every day. Now the hard times are over.

Apple released yesterday the first update for OS X El Capitan and OS X 10.11.1 fixes the issue I had with Mail and Kernel_Task. Both of my iMacs would become unusable because both task drove up CPU load.

Now several hours into using Mail on the OS X 10.11.1 update, everything looks fine. Mail is very responsive and CPU load is normal. As reported yesterday, I had a brief scare updating one of my iMacs with OS X 10.11.1.

The iMac got stuck on a white screen after reboot. Rebooting again holding down Shift (Safe Mode) has resolved the issue and the update has finished without any further issue. 

The release notes of OS X 10.11.1 do not mention the CPU issue as fixed. It is one of those bugs not everyone encounters. Whatever the Apple engineers changed, it fixed the CPU issue for me. Apple has said that the first El Capitan has several fixes for Mail.

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.

Because I had these issues with El Capitan and the white screen trouble, I am now really always make sure I have a recent backup before installing anything new on my iMacs.

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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 ml@i4u.com.




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