It's been too many nights when this happened:
- Decide it's time to sleep
- From the Settings charm, pick Power then Sleep
- ???
- Wake up several hours later
- Turn the computer back on and it's a fresh session
- Unsaved work is lost
If the computer is left to sleep for a short while, the computer successfully wakes itself up normally.
Why is that? What's going on?
System logs say nothing helpful: (read bottom to top, I skipped a few irrelevant entries in the middle)
Log Name: System
Source: Microsoft-Windows-Kernel-Boot
Date: 03/07/2012 10.42.48
Event ID: 20
Task Category: None
Level: Information
Keywords:
User: SYSTEM
Computer: Delta
Description:
The last shutdown's success status was false. The last boot's success status was true.
Log Name: System
Source: Microsoft-Windows-Kernel-General
Date: 03/07/2012 10.42.48
Event ID: 12
Task Category: None
Level: Information
Keywords:
User: SYSTEM
Computer: Delta
Description:
The operating system started at system time 2012-07-03T08:42:48.485276100Z.
Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 03/07/2012 04.18.09
Event ID: 42
Task Category: (64)
Level: Information
Keywords: (4)
User: N/A
Computer: Delta
Description:
The system is entering sleep.
Sleep Reason: Hibernate from Sleep
Log Name: System
Source: Microsoft-Windows-Kernel-Power
Date: 03/07/2012 01.17.45
Event ID: 42
Task Category: (64)
Level: Information
Keywords: (4)
User: N/A
Computer: Delta
Description:
The system is entering sleep.
