2018-06-30 22:29:46 +0200 : Showing all currently held IOKit power assertions
Assertion status system-wide:
   BackgroundTask                 1
   ApplePushServiceTask           0
   UserIsActive                   1
   PreventUserIdleDisplaySleep    0
   PreventSystemSleep             0
   ExternalMedia                  0
   PreventUserIdleSystemSleep     1
   NetworkClientActive            0
Listed by owning process:
   pid 108(hidd): [0x000007b200098455] 00:00:02 UserIsActive named: "com.apple.iohideventsystem.queue.tickle.4294967916.3" 
	Timeout will fire in 297 secs Action=TimeoutActionRelease
   pid 85(backupd-helper): [0x00000c43000b85b3] 00:00:07 BackgroundTask named: "backupd-helper" 
   pid 293(nsurlsessiond): [0x00000c21000185b0] 00:00:41 PreventUserIdleSystemSleep named: "NSURLSessionTask AD684426-0E66-4822-A8F1-7E97401605B3" 
Kernel Assertions: 0x4=USB
   id=664  level=255 0x4=USB mod=01.01.70, 01:00 description=com.apple.usb.externaldevice.1a130000 owner=BCM20702A0
   id=665  level=255 0x4=USB mod=01.01.70, 01:00 description=com.apple.usb.externaldevice.1a160000 owner=FJ Camera 
   id=666  level=255 0x4=USB mod=01.01.70, 01:00 description=com.apple.usb.externaldevice.14400000 owner=IOUSBHostDevice
Idle sleep preventers: IODisplayWrangler