Bootcamp High CPU Usage

Discussion in 'Windows, Linux & Others on the Mac' started by Indy89, Jul 3, 2014.

  1. Indy89 macrumors member

    Joined:
    Apr 26, 2009
    #1
    Hi All,

    I have a problem with running Windows 8.1 under bootcamp where bootcamp itself uses between 25-35% CPU constant. Also when pressing any function keys such as volume or display/keyboard brightness it can take minutes to respond. Then when it does the translucent overlay can stay on screen for a long time before going. This occasionally goes after sometime (like 2 hours) but as soon as a reboot is done it starts again.

    I have had Windows 7 on this Mac previously which was perfect. I could maybe understand problems if I had done an upgrade but I didn't to try and avoid issues like this. When I moved to Windows 8.1 I did a clean install.

    I have looked around on this issue but not really found anything that has helped this problem.

    Anyone else had this issue or have any thoughts on a possible solution?

    Thanks for your time to anyone who replies.
     
  2. happyfrappy macrumors 6502

    Joined:
    Oct 14, 2007
    Location:
    Location eh?
    #2
    Never installed Windows 8/8.1 on my MBP, however on my old Thinkpad it did a similar massive CPU usage for very minor navigation(start screen & desktop) until I upgraded the video card drivers.

    Since you have Intel Iris graphics check Intel's driver version via their support site--read the "Release Notes" describing what bugs were fixed. From personal experience of Intel IGPs since X3100(GMA965), whenever you deal with service patch releases of Windows it usually introduces unexpected bugs and Intel usually releases updated drivers quickly but OEMs such as Apple, Dell, Lenovo, etc need to do their own "support certification/slight adjustments" for their custom power management drivers. Windows 8.1 Update 1 has been a bag of hurt for many users, I fear what Update 2 will be... :eek:

    I've gotten to a point Windows 8 isn't even worth the effort to use, each update has broken OEM drivers then you play the waiting game for the OEM to play catch up... Windows 7 never had this kind of excessive under-the-hood headaches.
     
  3. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #3
    Are you talking about the bootcamp app in windows? Kill it, for what ever reason my doesn't start up all the time or it ends. My windows installation works fine, and when I want to switch to OS X, I go to the control panel and fire up boot camp to switch the start up disk
     
  4. Indy89 thread starter macrumors member

    Joined:
    Apr 26, 2009
    #4
    I have to say it never crossed my mind to try the Intel drivers but its certainly worth a try. The drivers installed will be whatever version Apple package with the bootcamp drivers, history tells me this will be terribly outdated. I only really updated to Windows 8 as there was a free copy going from where I work so thought I would give it a shot. I'll look up the Intel drivers and see if that remedies the problem.

    ----------

    Yeah thats right its 'bootcamp.exe' in Windows that is showing constant 25-35% CPU usage in task manager. If this turns out to be the problem I think I will just stop it even loading on startup.
     
  5. Indy89 thread starter macrumors member

    Joined:
    Apr 26, 2009
    #5
    It turned out to be Intel's graphics drivers that were the problem. Updated to the latest and all is ok now. Thanks for the help with this :)
     
  6. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #6
    How did you update them, downloading them from Intel or Apple's boot camp download?
     
  7. Indy89 thread starter macrumors member

    Joined:
    Apr 26, 2009
    #7
    I downloaded them direct from Intel's website here. It has also boosted performance from what I can see. Double bonus. Although I don't do any heavy gaming on this, I wasn't seeing framerates as expected in some games. Now however games that stuttered before are smooth now. :)
     
  8. maflynn Moderator

    maflynn

    Staff Member

    Joined:
    May 3, 2009
    Location:
    Boston
    #8
    Awesome thanks for the link :)
     
  9. Indy89 thread starter macrumors member

    Joined:
    Apr 26, 2009
    #9
    No problem, hope its useful to others :)
     

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