Mac Pro 5.1: Sleep Failure
When the Mac Pro 5.1 is going to sleep due to inactivity or user command, then after few second, it switches off instead to remaining in waking state. It is not linked to the version of the OS (I tried 10.6.8 and the latest one).
At the next startup, the power management diagnostic contains the following Sleep failure code [code:0xFFFFFFFF0400001F]:
| 18:49:53.908080 +0100 | powerd | Entering Sleep state due to 'Software Sleep pid=108': |
| 18:50:04.152088 +0100 | powerd | [System: DeclUser IPushSrvc kDisp] |
| 18:50:06.056919 +0100 | powerd | |
| 18:52:04.676030 +0100 | powerd | powerd process is started |
| 18:52:04.676476 +0100 | powerd | Summary- [System: No Assertions] Using AC |
| 18:52:04.730789 +0100 | powerd | Kernel Idle sleep preventers: IODisplayWrangler |
| 18:52:05.225772 +0100 | powerd | hibmode=0 standbydelay=0 |
| 18:52:05.225820 +0100 | powerd | Sleep Failure [code:0xFFFFFFFF0400001F]: |
| 18:52:09.252765 +0100 | powerd | [System: DeclUser BGTask kDisp] |
| 18:53:15.585813 +0100 | powerd | [System: PrevIdle DeclUser BGTask IPushSrvc kDisp] |
| 18:53:29.013655 +0100 | powerd | [System: DeclUser BGTask kDisp] |
I would like to get additional information about this code and its meaning in order to fix this issue.
Mac Pro, macOS Sierra (10.12.2)