sleep snippets

How to put the run loop to sleep

Tagged sleep, runloop, objective-c  Languages objectivec
NSDate *stopDate = [NSDate dateWithTimeIntervalSinceNow:2];
[[NSRunLoop currentRunLoop] runUntilDate:stopDate];
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My Mac won't go to sleep

Tagged mac, pmset, sleep  Languages bash

If your Mac won’t go to sleep, try this:

pmset -g assertions

Check the output for details on which processes and voodo magic is keeping your iMac up all night:

Listed by owning process:
   pid 4627(cloudd)...
Idle sleep preventers: IODisplayWrangler

Things you can try:

  • Resetting the printing system (CTRL+click in the left pane of the Printers and scanners settings)
  • Unplugging external devices (USB, bluetooth, etc)
  • Voodoo

References:

https://discussions.apple.com/thread/7256162

https://www.reddit.com/r/applehelp/comments/43ks7u/macbook_wont_go_to_sleep_hidd_preventing_sleep/

https://apple.stackexchange.com/questions/307151/significance-of-iodisplaywrangler-in-power-management-assertions

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