Macbook Air not waking up from Suspend/Sleep with rEFInd boot manager installed

bootefisleep-wakeunix

Having installed both rEFInd 0.6.10 (updated to 0.6.11) via its install.sh and Ubuntu 13.04 on another partition I can now choose on a MacBook Air to boot either MacOS or Linux.

When running MacOS and closing and soon re-opening the lid, everything is fine, but after a longer time of closed lid, the machine is not waking/starting up. Instead I have to long-press the power button and then press it again to boot the machine.

Best Answer

If you want to prevent Macbook going from sleep mode into standby mode (dump RAM to SSD) too soon, you could also adjust by changing pmset's standbydelay value.

sudo pmset -g to check current setting

sudo pmset -a standbydelay [value] to update settting

But instead of changing pmset configuration (which affects your battery life), try using the original rEFIt instead, the installation is as simple as the forked project rEFInd, and I no longer experience any wake-up problem on my Macbook Air 5.2 (Mid 2012 version/OS X 10.8)

Reference Links:

http://refit.sourceforge.net/

https://askubuntu.com/questions/295105/refind-breaks-standby-mode-on-macbook-air-5-2/296514

Related Question