System and System Interrupts- high cpu utilization

UPDATE: I have just installed the latest version of Yosemite - 10.10.3 and tested my Windows 7 partition. Still nothing has changed. My firmware version for the Boot ROM and SMC are still identical to the previous patch as well. I also went through the same tests as in my previous post and found it is still the Intel Graphics driver that is causing this issue. Both the Apple provided driver AND the latest Intel provided driver suffer from the same problem.

The only fix right now is putting my laptop to sleep and then waking it back up. However, there are still side effects that are plaguing my experience:

- Upon waking, my WiFi will fail and refuse to connect, forcing multiple reboots until it remains working.

- The function keys will not work making it impossible to change the brightness on my keyboard.

- Various graphical glitches will occur, making my screen look like it's tearing itself in half. Sometimes it will flash a few times and the colors will be off and the screen will look like a series of lines and twisted shapes.

- Not as common, but Windows has crashed several times after resuming.

I haven't experienced ANY of these problems in any of my Windows computers in the past, leading me to conclude that these issues are the fault of Apple rather than Microsoft.

Apple please fix this problem or at least acknowledge something. I bought this laptop so I could use both Windows and OS X since the projects I work on require the use of both operating systems. I happen to use Windows about 85% of the time so these problems are seriously affecting me. I'm strongly considering moving back to a Windows laptop as it function far more smoothly than this Macbook does.

I have the same issue with Windows 7 Home Pro on an iMac 5k.

Putting Windows to sleep and waking up does not resolve the 33% +/- utilization, restarting Windows fixes it every time though; it seems to only happen after the computer sits idle for a 1/2 our or so. I suspect sleeping is the condition which precipitates the system interrupts high utilization, but I really need to verify that assumption. I've been watching this thread for a few weeks now, hoping that a solution will be posted soon...

I've just spent over a day on this and this simple put it into sleep once solves it. I just wish i'd found this 24hours ago !

A possible fix: Start Windows from OS X by selecting Boot Camp as the Start up Disk

Hi everybody. I have a 13" - MBP Retina early 2015 model which always misbehaves under Windows 8.1 with poor battery life and a warm to hot MBP due to high CPU usage of the Boot Camp process and a screen that flickers at login time which can only be stabilized by changing the resolution to anything and then changing it back to what i am comfortable with which is 1920 x 1200

However I noticed that if I start Windows 8.1 by selecting Boot Camp as start up disk, I never get high CPU usage and the battery life is excellent. Also the CPU virtualisation feature is enabled in the Task Manager/CPU widget which would otherwise be disabled.

Upon successive shutdowns and restarts, the low CPU usage of Boot Camp stays but sadly the CPU virtualisation feature returns back to disabled but then this is another issue.

Please give this a try and see if this helps out all others having a similar issue.

All the best!

Hello, i might harass someone just ignore it because i typed this while being angry.

This isn't normal i payed 2000 Euro's to buy Macbook Air 2015 Upgraded i7, max ram....

And when i run Bootcamp windows 7 ultimate before i used 32bit no issues i even played games perfectly and now i specially upgraded because stupid apple decided to change to 64bit i was like okay fine... in few days *** this macbook is broken or what thooooseeee lags horrible then i checked my resource monitor and then "Oh My God" i have 50% cpu utilization of System Interrupts and now my laptop is unusable in windows and Apple keeps ignoring... also to upgrade my windows to 64bits i wasted 3 days of my life to copy all my material etc... business projects and so on... and im not going to type perfectly here because time wasting again while i type this text.

I need your help guys. If i update my OSX will the problem disappear?

Cheers,

Ralph

P.S I am very disappointed in you Apple!

Glad1atorX wrote:

This isn't normal i payed 2000 Euro's to buy Macbook Air 2015 Upgraded i7, max ram....

And when i run Bootcamp windows 7 ultimate before i used 32bit no issues i even played games perfectly and now i specially upgraded because stupid apple decided to change to 64bit i was like okay fine... in few days ***

P.S I am very disappointed in you Apple!

Can you go back to W7 32-bit?

Dual-booting is a user choice, not Apple's. If 32-bit works for you, why upgrade? I still run SL on a 2008 MBAir, and it works perfectly. Run Tiger on a PPC Mini, and it is perfect. Blaming Apple for your decision is not reasonable, is it?

If you do not like the 2015 MBA and are within Apple's return policy, please return it and get your money back.

i have MBA2013 mid ，Then there is a problem, then solved by upgrading OSX10.10.3。。

but you is mba2015 ，I heard that Apple's new device looks not support win7, minimum is win8 over, right? ?

You may be able to try win8 or official version of the upcoming release win10

Latest update 10.10.4 still doesn't fix this issue.

After about 4 month they answered to me:

Apple Developer Relations14-Aug-2015 00:09 AM

We cannot reproduce this issue. If this is still occurring, please try to reproduce on the most recent software available to you (OS X, iOS, Xcode, etc.), and then provide any further diagnostic information you have.

Should I try to use latest version of iOS? It could really help?

i come form china use mbp 15 2014 mid

Apple please fix this problem or at least acknowledge something. I bought this laptop so I could use both Windows and OS X since the projects I work on require the use of both operating systems. I happen to use Windows about 85% of the time so these problems are seriously affecting me. I'm strongly considering moving back to a Windows laptop as it function far more smoothly than this Macbook does

Latest update 10.10.5 + latest bootcamp 6.0 still doesn't fix it.

I just made a Windows 10 clean install, with all OSX updates on (10.10.5) and the latest bootcamp 6.0 (supporting Windows 10) and the problem still exists.

For the record, I am using a MacBook Pro Late 2013, 2GHz Intel core i7, 8 GB 1600 MHz DDR3 with Graphics Intel Iris Pro 1536 MB.

I noticed however the amount of CPU has decreased with the latest update ou latest bootcamp (don't know which one is responsible for the improvement). I had around 20% CPU consumption on both System and Interrupts (has shown on Task Manager) and now it is around 10-11%. Better but the problem still there. The workaround (sleeping and awaking the computer) still applies.

I find amazing Apples position on this "cannot reproduce". I made a clean install for both W8.1 and W10 and the problem is immediately present.

Hi, im having MBP 15'' late 2013.

I agree, Apples just too lazy to take a macbook and do a clean windows installation.

I'm sitting on fresh Windows 8.1 with 12-14% presistent cpu load. Windows 7 x64 had the same issue, Windows 10 x64 had the same issue.

HOW Apple could not reproduce it? I consider it as 'we dont mind, we have your money already'.

abel.e.pereira wrote:

I find amazing Apples position on this "cannot reproduce". I made a clean install for both W8.1 and W10 and the problem is immediately present.

What happens with interrupts and CPU utilization in OS X when performing the same tasks? Is there a side-by-side comparison of OS X and Windows?

Loner T:

By saying "performing the same tasks" you mean "while idle"? This looks like bug in EFI, that cause Windows and Linux to consume one CPU core while idling on MacBook. OS X works ok, without such issue, and if you boot OS X first and then reboot to Windows/Linux, this "interrupts" are gone. This issue appears only after EFI upgrade comes with OS X 10.10.2 as I remember, with older EFI version there is no issue. Unfortunetly, there is no options to roll back EFI firmware. In my company we have installed update on most of MacBooks before discovering this issue, so most of MacBooks became unusable (we use Windows heavily), but there are few devices with old EFI firmware without this bug.

Side-by-side when not idle, but normal work.

Please see About the security content of Mac EFI Security Update 2015-001 - Apple Support.