2nd core shuts down after 30min

Discussion in 'MacBook Air' started by Garemz, Mar 7, 2008.

  1. Garemz macrumors regular

    Joined:
    Feb 7, 2008
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    Edmonton Alberta Canada
    #1
    How to ENABLE the 2nd core after it shuts down.

    video seems to stutter so does the OS


    Cheers
    Gary
     

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  2. pgharavi macrumors regular

    pgharavi

    Joined:
    Nov 25, 2004
    #3
    I would love to solve this. My MBA is useless as a video player when a core shuts down (5-10 minutes watching 720p mkv files; 20-60 minutes watching regular xvid files).
     
  3. NC MacGuy macrumors 603

    NC MacGuy

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    #4
    You may need a MB.
     
  4. Sesshi macrumors G3

    Sesshi

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    #5
    Weird. I have no problems playing back DVD's.
     
  5. Garemz thread starter macrumors regular

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    #6
    I'm looking for a fix
     
  6. NC MacGuy macrumors 603

    NC MacGuy

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    #7
    Looking at your screenshot, are you really watching a vid at the same time all those apps are running?

    Some redundancy here. Entourage & mail? Safari & Firefox?
     
  7. Garemz thread starter macrumors regular

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    #8
    Still does not explain why there is only 1 core working.
     
  8. Eidorian macrumors Penryn

    Eidorian

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    Indianapolis
    #9
    Does it always shut down or just under load? What are your load numbers when this happens? What are the temperature readings?
     
  9. NC MacGuy macrumors 603

    NC MacGuy

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    #10
    But it could explain why it overheats causing 2nd core shutdown.

    The second core probably shuts down for temp. protection as others have speculated.

    If you prevent it from overheating, you'll have both cores operational. With what you've got open, it looks like you're trying to stress it. You've got 9 app's open. If you've got a flash heavy page loaded in Firefox, another in Safari, itunes running and a video playing, that's fairly stressful. I opened near every app you did, and had my fans at 6200 and temp at 80C in less than 5 minutes. I think it would shutdown in 30.

    After it cools and maybe a restart, everything fine?

    What he said^
     
  10. Garemz thread starter macrumors regular

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    Edmonton Alberta Canada
    #11
    Thanks for the info, I always thought 1.6 core 2 Duo and 2 gigs of ram would be enough to run the internet, a movie, and an office app I know my 2.0 macbook has no problems with it.



    Cheers
    Gary
     
  11. NC MacGuy macrumors 603

    NC MacGuy

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    #12
    Well, your using two internet browsers at once and three office apps at once and itunes and a movie I would imagine w. quicktime. That's pretty cpu/graphics intensive. Maybe the Air isn't for you. The new MB's have some good spec's. and decent prices. I can watch a movie, have Safari open and Word running w. no problem.
     
  12. ExcelonGT macrumors regular

    Joined:
    Feb 9, 2008
    #13
    NC Macguy,

    You are REALLY starting to get annoying with your banter about running too many processes on the MBA.

    Of the dozen or so laptops i've owned over the past couple of years, I've been able to "load up" applications in the similar manner on machines with far less performance spec. no problems.

    Given the MBA's spec (low end and high end), anyone who is technically proficient would agree that the MBA is a very stout machine, certainly capable of handling multiple browsers, productivity software (email, office, excel) and streaming video (youtube).

    the only thing that the MBA was not designed for was gaming. the x3100 chipset just doesn't have the horsepower.
     
  13. NC MacGuy macrumors 603

    NC MacGuy

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    #14
    And the x3100 chipset w. shared video ram will not be affected in any way by opening a lot of app's? Get real.
     
  14. ExcelonGT macrumors regular

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    Feb 9, 2008
    #15
    If that's the case then Leopards window manager is inferior to Vista's DWM.
     
  15. NC MacGuy macrumors 603

    NC MacGuy

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    #16
    Maybe, but I don't think so.

    A lot of vid overheating is coming from new switchers playing pc encoded DIVX/AVI's w. VLC. The decoding isn't great for Mac's.
    Flash support leaves a little to be desired too.

    There really isn't a lot of space in the Air to dissipate all that heat. The heat sink as designed is rather small as well. Heats up - core shuts down.
    I was trying to help OP keep his machine from overheating or figure out why it is.

    I can play a movie I've encoded w. Handbrake in mp4 format w. Qt just fine while running Office app's and most anything else mac-centric.

    NCMacGuy doesn't like being busted on:D
     
  16. pgharavi macrumors regular

    pgharavi

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    Nov 25, 2004
    #17
    You are essentially correct but it's still ridiculous. I love how people on here go to apple.com, download QUICKTIME trailers that run 2 minutes long, and then claim their unit is fine. heh.

    divx/xvid/etc. is pretty much everywhere. 1.6ghz w/ 2GB of RAM should run it fine, in a lightweight player like VLC, no less.

    In fact, a Mac Genius agreed and swapped out my launch MBA. I knew it would make no difference but I figured it was worth a ****. Who knows, maybe in a month or two I will swap again and the problem will be solved. Hopefully they will have a firmware update.
     
  17. Help! macrumors regular

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    Nov 16, 2006
    #18
    Even if you are maxing out both cores it is reasonable to not expect to have the mba overheat
     
  18. NC MacGuy macrumors 603

    NC MacGuy

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    #19
    At least you know it isn't the machine, right??

    I watched Borat & Pulp Fiction back to back. It got hot but never shutdown. I also only had mail open because I was watching movies. Both encoded w. Handbrake at 720x400 in mp4.

    Hopefully this will get rectified so all vid formats can live in macland happily ever after.:D

    Agreed. What was the room temp? Was the computer situated such that it had absolute free air flow?

    Overheating did lead to core shutting down allowing it to cool. I think the thermal protection works. I've had mine for over a month and never had a situation like that and it's pretty much been my only computer since I bought it.
     
  19. aristobrat macrumors G4

    Joined:
    Oct 14, 2005
    #20
    Hmmm.

    I had planned on making a 1.6/80 MBA my main machine, and one of the things I was looking forward to doing was sacking out and watching some Divx encoded TV shows (in QuickTime, with some help from Perian).

    I'm a little worried that the MBA's not going to be able to pull that off as easily as I thought, which would throw a huge wrench in my plans. :(
     
  20. ReBeLaCe macrumors newbie

    ReBeLaCe

    Joined:
    Jan 8, 2007
    #21
    idk if this is exactly what was in mind. But I do know the air automatically throttles the processor when it is getting warm and after that will throttle the graphics performance causing graphics intensive programs and pretty much software in general to be sluggish. It is "expected behavior"
     
  21. al82 macrumors regular

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    Feb 13, 2008
    #22
    "Hmmm.

    I had planned on making a 1.6/80 MBA my main machine, and one of the things I was looking forward to doing was sacking out and watching some Divx encoded TV shows (in QuickTime, with some help from Perian).

    I'm a little worried that the MBA's not going to be able to pull that off as easily as I thought, which would throw a huge wrench in my plans. "

    I bought the Air to watch a divx every now and then and use word, the divx and avi files stutter after 10 mins or so, nightmare.
     
  22. Sesshi macrumors G3

    Sesshi

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    #23
    Even a slower Sony wouldn't have any issues with that kind of normal 'user doesn't always close apps' usage. I'm not seeing the sort of cycles that would shut down a core with VLC et al.

    Is this from the HDD or over wireless?
     
  23. Cybergypsy macrumors 68040

    Cybergypsy

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    Central Florida!
    #24
    Why does every one watch DVDs online i still prefer my 42" LCD.....:rolleyes:
     
  24. Sesshi macrumors G3

    Sesshi

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    #25
    Hernia is so not my bag, baby.
     

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