Select Cancel.
Retry Suspend again. If you have not already saved your work, do so now.
Check for more information in the Console window in the Workspace.
If a process is a real-time process or if it is performing certain special network operations, that process may refuse to suspend gracefully. In most cases, this is only a temporary condition and you can correct it by trying Suspend again.
However, if the problem persists, stop the offending process (as specified in the console message) and retry Suspend again.
Try Suspend again.
If Suspend succeeds, the system saves your activities and the system powers off.
If Suspend does not succeed, the alert pop-up window is displayed again.
Save your work if you have not already done so.
Select Power Off.
Remember--your data won't be saved unless you have done so manually.
When you power on again, your system automatically reboots.