Since two days I am using an external SSD as system disk (to work with my system on my iMac or on my new arriving MacBook Pro – on demand – without any synchronization process). Just attach the disk and boot my system.
On my iMac this work pretty good. I have tested my Thunderbold 2 case – wich was faster on boot as the USB 3.0 case. But the Thunderbold case need external power – so thats not perfect.
Now I am using the USB 3.0 case just connected via USB. And this morning I noticed, that my iMac didn't went to sleep – just the dispay turned off. So the system will not go to sleep automatically. After 5 minutes with turned off display I can still see some flashing LED on the SSD case – once a minute or something.
What can I do to get my system automatically to sleep again?
pmset -g in Terminal, I get the following
Currently in use: standby 1 Sleep On Power Button 1 womp 0 halfdim 1 hibernatefile /var/vm/sleepimage powernap 0 autorestart 0 networkoversleep 0 disksleep 0 sleep 1 (sleep prevented by backupd, backupd, UserEventAgent) autopoweroffdelay 28800 hibernatemode 0 autopoweroff 1 ttyskeepawake 1 displaysleep 1 standbydelay 10800