NoSleep no longer works with lid closed

Discussion in 'OS X Yosemite (10.10)' started by vegetassj4, Nov 12, 2014.

  1. vegetassj4 macrumors regular

    vegetassj4

    Joined:
    Oct 16, 2014
    #1
    I occasionally used nosleep to save battery power under Mavericks and use an external HDMI monitor with the lid closed. It appears that this no longer works properly under Yosemite.

    After closing the lid, the external monitor dims, turns back on, but then the computer sleeps after about 30 seconds subsequent to closing the lid.

    Anybody else using NoSleep with Yosemite?
     
  2. vegetassj4 thread starter macrumors regular

    vegetassj4

    Joined:
    Oct 16, 2014
    #2
    Update

    NoSleep released an update a couple of days ago, and is now working again with Yosemite (lid closed).

    Note that I am not talking about the one on the App store, but the kernel extension, located here: https://code.google.com/p/macosx-nosleep-extension/
     
  3. crashoverride77, Nov 19, 2014
    Last edited: Nov 19, 2014

    crashoverride77 macrumors 65816

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    Jan 27, 2014
    #3
    Not to be annoying but you should never do this, especially with modern MacBooks. They have the biggest cooling holes right where the screen is attached to the unibody. If you close the lid you essentially block them and could cause your Mac to overheat even if you are not doing any intensive tasks.
    You are not gonna save more power that way anyway. You will get the same battery result if you leave the lid open and brightness turned to 0. Saving the extra space, which I imagine is why you are doing this, is not the worth the risk of potentially damaging your expensive machine.
     
  4. vegetassj4 thread starter macrumors regular

    vegetassj4

    Joined:
    Oct 16, 2014
    #4
    Thanks for the concern, but the holes are not blocked upon closing the lid. Apple designed them (at least my rMBP early 13 and rMBP late 13) to be used closed with the TBD.

    BTW, NoSleep still only seems to work under a very specific condition involving when enabled, taken of power, lid closed - which I have not been able to track down.
     
  5. crashoverride77, Nov 23, 2014
    Last edited: Nov 23, 2014

    crashoverride77 macrumors 65816

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    #5
    Hey,
    I'm not sure what you mean by not blocking. The holes by the screen is where excessive heat is released and if you close the lid these will be blocked. I got the late 2013 MacBook pro, which is the same design as yours. I'm not sure what difference it would make if you connect it to a TBD as the laptop would still be producing heat.

    Apple did NOT design Mac books to run while closed, that's why there is no native OSX option to turn off sleep when closing the lid. The way the design works is that the fans suck in air from the vents all around the side of the unibody and it releases this air around the screen (see pic). Blocking these with the lid closed just does not seem like a good idea as the excessive heat essentially has no place to escape.
     

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  6. vegetassj4, Nov 23, 2014
    Last edited: Nov 23, 2014

    vegetassj4 thread starter macrumors regular

    vegetassj4

    Joined:
    Oct 16, 2014
    #6
    The MacBooks are indeed designed to run when closed when connected to a Thunderbolt display and connected to a magsafe adapter (power). I am typing this from such a configuration, with no 3rd party software interfering. The MB will also wake from sleep while closed in this configuration as well.

    see page 7: http://manuals.info.apple.com/MANUALS/1000/MA1594/en_US/thunderbolt_display_getting_started.pdf

    They can also be operated closed with other monitors: http://support.apple.com/en-us/HT3131



    In addition, see below showing venting with lid closed (turn your MB over) through the gap at the hinge between lower body and screen.
     

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  7. crashoverride77, Nov 23, 2014
    Last edited: Nov 23, 2014

    crashoverride77 macrumors 65816

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    Jan 27, 2014
    #7
    Thanks for your quick reply and provided links.
    When I was thinking about doing the same last year I was reading about it and loads of people were advising against it. I think you might be right and I apologise for spreading false info.
    I was just reading about this and didn't realise there is such a thing as clamshell mode.

    Edit: after some more reading it turns out I can use any external monitor and cable connection (thought it was TBD specific) and clamshell will work if I have external keyboard and AC connection. I can't belive I didn't know this so thanks again for telling me. There are websites that say that clamshell mode still impacts air flow but it's not as bad as I thought it would be (http://osxdaily.com/2012/06/08/quickly-enter-clamshell-mode-with-an-external-display-in-mac-os-x/m). I am about to get an external monitor and this new insight might change my desk setup and the possibility of now having 2 external monitors and still having space on my desk. :D
     
  8. vegetassj4 thread starter macrumors regular

    vegetassj4

    Joined:
    Oct 16, 2014
    #8
    No worries.

    I actually have one of my setups with two monitors (old picture below). I added a vertical stand, and daisy chained the samsung monitor from my external HD w/ a mini display to HDMI cable. It is great to be able to plug/unplug two connections to access all external devices.

    What is even nicer is this dock: http://hengedocks.com/products/macbook-pro-retina




    The only thing nosleep added was the ability to operate in clamshell without AC power, for when I do not have one with me. It was very useful.
     

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  9. crashoverride77 macrumors 65816

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    Jan 27, 2014
    #9
    Yeah this looks awesome.
    I will buy my monitor this week and my initial setup plan was to have 1 monitor and the laptop next to it acting as a 2nd monitor.
    With this new insight about clamshell mode I might change my setup and get 2 monitors and than buy a stand similar to what you send me. I quite like these ones (http://www.amazon.com/Twelve-South-BookArc-MacBook-Pro/dp/B0098EYM3A)
    I'm not really desktop guy so having a mac mini or something similar would just be a waste of money for me. I still like to have a monitor tho and Clamshell mode will do just fine :D
     
  10. KALLT, Nov 24, 2014
    Last edited: Nov 24, 2014

    KALLT macrumors 601

    Joined:
    Sep 23, 2008
    #10
    I'm sorry for asking, but what is the purpose of NoSleep for this setup? Since you do use an external display, and I assume a keyboard and mouse, you don't need any third-party software for this (as you know). I get that it's useful to have this without external power, but is it really that practical? I'm asking, because I'm assuming that this NoSleep extension requires disabling the new kext-signing security feature of Yosemite to inject the extension, which has given rise to problems with other similar extensions, like Trim Enabler.
     
  11. vegetassj4 thread starter macrumors regular

    vegetassj4

    Joined:
    Oct 16, 2014
    #11
    Hmmmm. Perhaps this is why it is not working. Assuming I would have to disable that security feature, then no I would not want to use nosleep.
     
  12. vegetassj4 thread starter macrumors regular

    vegetassj4

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    Oct 16, 2014
    #12
    That's the stand I currently use:cool:
     
  13. crashoverride77, Nov 24, 2014
    Last edited: Nov 24, 2014

    crashoverride77 macrumors 65816

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    #13
    Hehe nice.
    Decided to order 1 monitor for now and will just use my laptop as a secondary screen. Will definatly change this set up in the future when I have some more money. That Apple mouse and keyboard ain't cheap :rolleyes: :apple:
     
  14. Razer(x) macrumors regular

    Razer(x)

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