InsomniaX Logo

Version: 0.5/1.3.5/2.1.8

It always has been a missing feature: disabling the sleep mode on a Apple Laptop. Who does not want to use it as a big juke-box or go warwalking. The best looking server ever, especially at about one inch height. This small utility is what you will want, this small utility acts as a wrapper to the Insomnia kernel extension.


InsomniaX was coded as a way to test the use of Insomnia in MultiAlarm, how ever becuase it held more potential in other areas and would allow users to use this handy feature with out buying a program like “Sleepless”

InsomniaX then recieved later updates which enabled a inbuilt “Jiggler” feature along with new icons and cleaner interfaces which included a log viewer to help diagnose the use of Insomnia

InsomniaX is slowly developing into a viable tool as it has completed its task in testing Insmonia but is being kept as a active project to keep as a alterative to “Sleepless”


Note: InsomniaX is PASSIVE!
This means that unless another program has interfered with the operations of InsomniaX, once you reboot your system it will be completely removed from the system until you start InsomniaX and activate its features.

If after a reboot or during boot you exhibit issues, these are not related to InsomniaX. (The only exception is if you have InsomniaX in your startup items for your login)

Uninstalling/Repairing InsomniaX
The most common ticket in the help desk regarding issues with InsomniaX or requesting instructions on how to remove InsomniaX, below is a simple step list of what is required to completely wipe out InsomniaX. If any problems exist after removing InsomniaX it should not be related to Insomnia as it works as a passive changing, in other words once its unloaded all changes are moved (Especially after a reboot any trace should be gone)

  1. Reboot the machine
  2. Ensure InsomniaX is not running
  3. Enter in terminal : defaults delete com.semaja2.InsomniaX (use net.semaja2.insomniax for InsomniaX 2.1 +)
  4. Delete ~/Library/Application Support/InsomniaX (Use the terminal command “sudo rm -rf ~/Library/Application\ Support/InsomniaX”
  5. Delete /Applications/
  6. If reinstalling download latest version from MacUpdate

470 thoughts on “InsomniaX

  1. Hi Everyone,

    I would strongly advise against installing the very outdated InsomniaX 2.0 which contains many bugs, and would require lowering the security on a Yosemite system to run correctly.

    InsomniaX 2.1.8 has been tested on Yosemite and works 100%


  2. Alex

    Hello Andrew,

    I’ve been using Insomniax for a little while. I want to be able to run with the lid closed while not plugged into AC to maximize battery life by avoiding constant charging. I can get Insomniax to do that but it always takes a couple of tries. Namely, when I first select “Disable Lid Sleep” and unplug the laptop, it usually still goes to sleep. Also, if I select “Disable Lid Sleep” and even “Disable Idle Sleep” but the monitor goes to sleep while I’m not using the laptop, getting the screen to turn on requires plugging the laptop into AC again. When it wakes up, I see the “Disable…” settings still selected in the menu but unplugging AC will immediately put it back to sleep. To get it to work off AC requires unselecting “Disable Lid Sleep” (which immediately puts it to sleep even while plugged into AC), waking it up again, and selecting “Disable Lid Sleep” again.

    I have no special default settings. Perhaps, I’m missing something simple or is there something that must be unique to my setup (MacBook Pro (Retina, 15-inch, Late 2013) running Yosemite 10.10.1 (14B25))?

    Thanks for any help with getting this to work reliably.

  3. AL

    In my setup (macbook pro non-retina 13″) w/ Yosemite 10.10.1 InsomniaX doesn’t work. It always go sleep… On Mavericks it did work properly bu after the upgrade I doesn’t… I upgraded to 2.1.8 wit no luck

  4. BarryMcCockner

    Its very rare an app works the way you want to, however this app is an exception.
    It does exactly what its intended to do.
    Good job dev’s.

    – Yosemite MBA 11″

  5. Robin

    Do you have an explanation of all the settings for InsomniaX? They might seem obvious, but I’m a bit confused! I am trying to allow my macbook to serve a music player, while the lid is closed. I would have thought that setting the ‘disable lid sleep’ would do the trick; but it seems to be working with the ‘disable idle sleep’. Also- what does CPU Safety mean? I’m not a techie and very new to MAC.

    Thank you.

  6. sysnetarea

    I installed this tool yesterday and it’s still the best ever. I run it on OS X Yosemite 10.10.1 without trouble. Thanks bunches for the very good work and keep going.

    How can I donate something? Do you use PayPal?

  7. Steve

    Hi, love this app. Found a little bug though: When I reopen the lid and “Disable Lid Sleep” is checked, my keyboard backlit does not automatically re-light up until I change the screen brightness with F1/F2.

  8. victor

    estoy trabajando en edicion de fotos y estoy conectado a un monitor mac y quiero cerrar la pantalla de mi macbook y y no funcion por que se me apaga el monitor

  9. Bob

    Nice program, thanks for doing it.

    Can you tell me if this is intended operation: If I check “Save States on Exit” and “Start on Login” under Preferences, and have selected “Disable Lid Sleep”, does that mean after a system restart InsomniaX will run *and* Disable Lid Sleep should still be selected? On 10.10.3 InsomniaX is starting on login as expected, but the check mark is gone and lid sleep is not disabled until it is manually selected again. Is there a way to get that check mark to persist, always have lid sleep disabled forever after until the option is unchecked?


  10. Matt

    Not sure if it’s actually working. I have it set to disable lid sleep and disable idle sleep, but when I close my MBP it seems to still shut down to sleep mode like it always has. Apple logo light goes off, and processes halt. When I open it again, downloads have paused and internet has to reconnect–all the marks of a system that’s slept because the lid was closed.

  11. xdxdy

    Hello, good night!

    Thank for your great app InsomniaX , it helps me a lot. I use it every day. It’s really a good app!

    But I have a question, I do see the screen off when I close my macbook while the InsomniaX working, but some times after I disable Lid Sleep and close the macbook for a long time, I can see the screen burn-in a little when I open it again(which disappears after turn off the power for a while) . But the screen seems been turn off during those time.

    So can you tell me is the screen really off when Lid Sleep disabled and the macbook closed?

    Thanks for your help, have a good day~:)

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  13. Petr

    In the current OS X El Capitan betas the InsomniaX 2.1.8 doesn’t work properly, most likely due to the new System Integrity Protection.
    Only if I manually load the Insomnia kext then it works for a while (however after some time the kext got unloaded by the OS) – so it seems you will have to install and load it system wide here. But maybe you’ll find a way to avoid that.

    Anyway, could you please make a preference pane for setting up the kext settings? That would of course to load the kext system wide in any case, however I wouldn’t have to keep the InsomniaX app running at all times (usually I use it only to prevent sleep when closing lid and that’s what the kext takes care of)

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