1 2 Previous Next 17 Replies Latest reply: Aug 14, 2012 5:18 AM by Marty2000
Ovate Level 1 Level 1 (0 points)

With Leopard, to use the external monitor as the main display you had to put the mac to sleep by closing the lid and with the power adapter on. Then you had to waken it with an external keyboard. Because of the problems that most people seemed to encounter with wifi in clamshell mode, it was then necessary to open the macbook again. This was possible as the external monitor would remain as the main display.

Problem: with Lion, when you close the macbook, the display automatically changes over to the external display. This is nice, however, the wifi problem has not been fixed, so if you wish to then get the wifi up to speed again and open the laptop, the display is automatically changed back to the laptop. THere is no way to prevent this, so it seems. So although the switching process is better, the wifi situation has just got worse!!

In clamshell mode my connection drops to about 500Kbps to 1Mbps, when the lid opens it rockets straight back up to roughly 10Mb.

Does anyone know how to use an external monitor as the main display for a macbook, while allowing the macbook lid to remain open when using LION. Though it would be even better if Apple could fix the wifi problem in clamshell in the first place.

Cheers

Ovate

  • 1. Re: OSX Lion: Macbook + external display = wifi problems
    Jonathan UK Level 1 Level 1 (45 points)

    The clamshell mode-related functionality that allows an external display to be used as the main display for a MacBook Pro whilst allowing the MBP's lid to remain open and its own display turned off seems to be broken under Lion.

     

    A lot of people want this functionality back - not just for better wifi reception, but also because having the lid open enables the MBP to remain VERY MUCH cooler in operation than it would with the lid closed.

     

    This functionality needs to be restored to Lion urgently. I regard its omission as a bug, not least because Apple's online instructions for how clamshell mode should work remain unchanged. I would encourage you to submit your own direct request / bug report for this issue via the feedback form here:

     

    http://www.apple.com/feedback/macosx.html

  • 2. Re: OSX Lion: Macbook + external display = wifi problems
    Ovate Level 1 Level 1 (0 points)

    I submitted a request via the feekback form the other day, thanks.

     

    Currently I'm running with the two screens on at the same time, just so i can get the wifi to work!

  • 3. Re: OSX Lion: Macbook + external display = wifi problems
    Jonathan UK Level 1 Level 1 (45 points)

    Support today quoted Apple's engineers as saying it is "expected behaviour" under Lion for the MBP's internal display to reactivate upon opening the lid, even if you want to use only your external display. A new version of the clamshell mode-related knowledgebase article (replacing HT3131) is due shortly confirming this.

     

    This is despite:

     

    - the obvious temperature-related benefits that were achievable (under Snow Leopard) by opening your MBP lid whilst continuing to output solely to, say, a 27" cinema display
    - potential wifi connectivity benefits of having the lid open
    - the waste of energy and inefficient use of graphics processing power in needlessly running two active screens (ie if running your MBP in clamshell mode would otherwise make it too hot and/or noisy or you need it open for wifi)
    - the negative longer-term impact on the battery and other components from running the MBP any hotter than it needs to be.

     

    To have any hope of getting the previous behaviour back, we need to lobby Apple to change how Lion handles clamshell mode. Options available to them include changing Lion's expected behaviour or adding a user-selectable option within System Preferences.

     

    I know you've already submitted your own feedback, Ovate, but others can still do so (please) below. Now that this situation is clarified as intentional, user feedback has become all the more important.

     

    http://www.apple.com/feedback/macosx.html

  • 4. Re: OSX Lion: Macbook + external display = wifi problems
    Jonathan UK Level 1 Level 1 (45 points)

    Potential solution: Apple wants your forum feedback

     

    Please see a post in the following thread and reply to it as you wish. Apple has reportedly requested us to provide evidence within the forum thread in support of our desire to have the "open lid with screen off" option reinstated (eg the significance of operating temperature differences, levels of reduction in wifi reception, etc). They may then address our concerns with a Lion update.

     

    https://discussions.apple.com/thread/3190417?start=60&tstart=0

     


  • 5. Re: OSX Lion: Macbook + external display = wifi problems
    zecodela Level 1 Level 1 (0 points)

    WORKAROUND

     

    You can put a magnet on the keyboard side to simulate closed lid.

     

    http://www.youtube.com/watch?v=4KNyh4hc5O8

  • 6. Re: OSX Lion: Macbook + external display = wifi problems
    m.proemel Level 1 Level 1 (0 points)

    If you want the pre-Lion behavior back, enter in this in Terminal:

     

    sudo nvram boot-args="iog=0x0"

     

    Cheers,

    m.

  • 7. Re: OSX Lion: Macbook + external display = wifi problems
    markatos Level 1 Level 1 (10 points)

    m.proemel  what does that command do exactly?  I don't want to mess anything up?  I just want clamshell mode + wifi.

     

    Thanks,

    Peter

  • 8. Re: OSX Lion: Macbook + external display = wifi problems
    m.proemel Level 1 Level 1 (0 points)

    It disables the internal screen completely. To undo this, enter 'sudo nvram -d boot-args' or, alternatetively, hit Command+Option+P+R during start-up.

     

    Cheers,

    m.

  • 9. Re: OSX Lion: Macbook + external display = wifi problems
    samhaque Level 1 Level 1 (0 points)

    Yes I just got me first MBP and I can't run my external monitor only. This ***** big time Apple! Please fix this. It IS a problem, not an option or "the better way".

     

    I'm realizing Mac has so many useless limitations that it just makes life harder quite often.

  • 10. Re: OSX Lion: Macbook + external display = wifi problems
    samhaque Level 1 Level 1 (0 points)

    Also,

     

    Why oh why did Apple come up with the clamshell thing? I don't know about the pre-unibody MBPs but unibody MBPs fan pushes the warm air upwards from the bottom of the screen. When the screen is down and MBP is working hard, that hot hair hits the screen hard and I suspect it could deform the glass or so some kind of damage to the screen in it goes on long enough. Right?

     

    I'm getting more and more disappointed with MBP design and these moronic limitations.

  • 11. Re: OSX Lion: Macbook + external display = wifi problems
    nickyd45 Level 1 Level 1 (0 points)

    SOLUTION / FIX

     

    Open System Preferences, Display, Arrangement - then:

     

    Move the WHITE "APP LAUNCH BAR" to the monitor you want as the primary.  

     

    For a picture of this - click LINK here.

     

    ===

    I literally took my external monitor to the Apple Genius Bar with my 1999 MBP & New 2012 MBP in hand.  The tech was stumped.....  Thank goodness that the manager knew this trick.

     

    Dear Apple:

    1 - Why can't you write the words "APP LAUNCH BAR" inside the white box?  This was not obvious at all !!

    2 - Why can't you make it default to keep the "APP LAUNCH BAR" on 'starting' same monitor.

           -- Snow Leopard does not move the launch bar to the external monitor when you plug it in !

     

    I just could not accept that my brand new FEB2012 MacBookPro 17 could no longer use an external monitor.  Well it can.  But 'we' users have to manually make this change EACH TIME we plug into the external monitor.

     

    Apple - at least it works - even if it is ugly.  Cost me a lot of TIME to figure this out. 

     

    I hope this helps others in the same boat.

  • 12. Re: OSX Lion: Macbook + external display = wifi problems
    samhaque Level 1 Level 1 (0 points)

    Yes I think most people know about moving the Menu Bar to the other monitor. But it still leaves the MBP monitor active but useless during a video on external display. Clamshell mode is particularly a bad idea during video play.

     

    So this is still a big problem. Finally I started using a magnet to fool MBP into entering clamshell mode. which is a shameful way to use such an expensive well made machine. Sigh!

  • 13. Re: OSX Lion: Macbook + external display = wifi problems
    jperez3 Level 1 Level 1 (0 points)

    This worked. I've got the Mid-2009 White MacBook, placed the magnet just above the 3.5mm jack and it shut-off the display and put the computer to sleep, then hit the keyboard and started up with my external as the primary with the Laptop lid open.  My goodness how magnet technology works

  • 14. Re: OSX Lion: Macbook + external display = wifi problems
    Steve Poulton Level 1 Level 1 (5 points)

    I hit this issue this weekend. so annoying in clamshell mode my wifi took a dive and the fans were going overtime.

    Thanks for the magnet tip, I guess it will have to do for now. TIme to save for my Mac Mini!

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