Clamshell mode with screen up a thing of the past?

Discussion in 'Mac OS X Lion (10.7)' started by linkandzelda, Jun 8, 2011.

  1. linkandzelda macrumors regular

    Nov 8, 2010
    I have just installed DP4 and have noticed something.
    When I was running Snow I used to close the lid of my machine to sleep it. Then plug in the power and the screen and press a key on the keyboard. This would wake it up in clamshell mode and the main and only screen would be the external.

    Then I was able to open the lid of the MBA and it would stay black. I need to do this to receive the correct amount of signal for my wifi or i get 1-0 bars.

    In DP4 the waking part works fine, but the opening the lid after does not work it will display the contents of the screen making it my main desktop and the external as a second one. For now i've made the external the main display, but I would prefer if the screen was turned off, black and not in use at all.

    Is this possible, does anyone know?
    Thanks in advance,
  2. WARGHOST2012, Jul 3, 2011
    Last edited: Jul 3, 2011

    WARGHOST2012 macrumors newbie

    Jul 3, 2011

    Actually, I have a very similar problem.

    I had cracked the screen on my Macbook some time ago and have since been using an external monitor to counteract the screen fatality (it appears cracked in the middle and is highlighted by unintelligible black and white splotches all across the display) and has worked ok until the GM OSX Lion installation.

    On SL, she would go into clamshell mode when the lid was closed - then I would click my mouse and voila the external monitor would come to life, and I could open the lid on the MB and it's screen would stay asleep.

    Alas, this is no more. Now, when I open the screen after entering clamshell mode - it turns back on and becomes the main display and affects the resolution of the external monitor. I could leave the lid closed of course - but I want access to the track pad and to the keyboard. I could mirror the main display unto the external monitor - but resolution specs become unbearable. 1900 x 600.

    This kid on youtube posted something related - after watching this I realized that this problem may be related to a new feature that Lion has introduced - but it also appears to adversely affect my set-up which sucks.

    Is there a work-around for this? Is there a way to fix this? Do you think that Apple will have some kind of update to fix this problem in the official OS X Lion release? :confused:

    Please share your thoughts, ideas, workarounds, etc. regarding this issue...
  3. Hermolicious84 macrumors member

    Jan 20, 2009
    Columbia, MO
    Ditto to both of your concerns. I have the same issue and haven't been able to find a workaround. I run my 15" unibody MBP on my external monitor, and my main concern is heat when the laptop is closed. Watching a 1080P video on YouTube as a test, my closed laptop was at 78°C with fans running at 5000 RPM, and when I opened the laptop it didn't take long to go down to 65°C and 3500 RPM. Games are significantly worse.

    I hope Apple creates a fix for this soon. It would be nice to have a button similar to the one that deselects upside-down scrolling as the default.
  4. benj07, Jul 19, 2011
    Last edited: Jul 19, 2011

    benj07 macrumors member

    Oct 26, 2007
    I hope there is a workaround for this. . .

    EDIT: Apparently, a program called SwitchResX will allow you to selectively 'disable' the MacBook display so that you can theoretically achieve the same 'open clamshell' mode.
  5. aahhww macrumors newbie

    Sep 30, 2010
    same here SwichResX does not work in lion any help here guys thanks
  6. ElHummer macrumors newbie

    Oct 7, 2009
  7. phl0w macrumors newbie

    Apr 10, 2011
    Same here :(
    Command+F1 (decrease brightness) doesn't work either. It's either Mirroring or extended Display, but no option to output the signal solely to an external Monitor (unless of course you close the MBP's lid).
  8. ElHummer macrumors newbie

    Oct 7, 2009
    After some testing, it works for me.

    Make sure both Screens are on. Create a Display-Set and chose to deactivate the LCD of our Macbook.

    You see the blue screen for a second and the LCD of our macbook is off. But you can still control the brightness of the Apple logo.

    Done nothing else.
  9. Ropie macrumors regular


    Aug 6, 2007
    Is this using SwitchResX?
  10. BenManchester macrumors member

    Feb 1, 2009
    Same problem here. :(

    Forced to use ethernet connection at work, which blocks all ports for MobileMe.
  11. BenManchester macrumors member

    Feb 1, 2009
    Ok, SwitchResX worked for me. Only difference with my old set-up, the Apple on the back of the display is now on. Think I can live with that.

    I'll try it for a few days and if all goes well I'll buy it. :)
  12. ElHummer macrumors newbie

    Oct 7, 2009
  13. benj07 macrumors member

    Oct 26, 2007
    I was playing around with a few games today and it appears that, in most cases where you are running a full screen game, the screen can be opened AFTER you start the game, and it will stay turned off.

    I just tried this with Starcraft 2, and it seems to allow me to vent the computer while keeping only one display on (for max graphics performance).

    Additionally, if you're watching a full screen video (QuickTime, etc.) it does activate the notebook display, but it stays black so that the screen doesn't distract you.

Share This Page