Synology Support schrieb:

Re: Hibernation is not working after DSM 5.2-5565 Update 1


Postby jtjt00 » Tue May 26, 2015 4:29 pm
Below is Synology tech response:


Dear customer,


Thank you for contacting Synology Support.


If your DSM version is 5.2 5565 Update 1, please try to stop the Windows File service (via DSM > Control Panel > File Services) for a while and observe if the HDDs can enter hibernation mode. If it works, then it's a known issue and our developers are tracing the cause for it.


If disabling the Windows File Service does not work, please go through the following check list.


Here are some factors that might affect HDD hibernation:
- Cloud Station
- Media Server (Some DMA / DLNA device might perform background tasks)
- Syslog server
- Audio Station (AirPlay)
- Quick Connect
- NTP time sync (for DS213+/DS413)
- DDNS Service
- Routers that send out ARP packets regularly (for DS213+/DS413)
- Other AirPlay/DLNA devices in the same LAN
- Hotspot, Router mode (for DS213air only)
- IPv6 enabled on the DiskStation or Router


Here are the factors that are known to affect HDD hibernation:
- "Windows network discovery" option is enabled in DSM > Control Panel > Network > DSM Settings
- Audio Station option "Do not search for DLNA device" is unticked
- DiskStation is making thumbnails or re-indexing the multimedia files after upgrading.
There will be index/convert (synomkthumbd) process under resource monitor when this occurs.
- Webalizer (1hr or 5min)
- Local Master Browser in Control Panel > File services > Win/Mac/NFS > Windows file Service > Advanced settings
- eMule (Dlownload Station)
- Download Station (RSS, Active download tsks)
- Logitech Media Server
- Mail Server
- Media Server Log
- Mail Station (POP3 fetch)
- Surveillance Station (Video Recording)
- DMA log is enabled in Media Server > Diagnose
- Windows Media Player in LAN (Network Sharing Service, Default On)
(mydigitallife.info/how-to-di ... -wmpnetwk/)
- Directory Server
- 3rd party software or optware like SABnzbd, Plex
- Too many process running and swap is used, ex DS109j
- Synology NAS (DS213+ & DS413) cannot enter System Hibernation if any USB devices are attached to the unit.


If none of them are on your DiskStation, please help us disable all services/packages, and removing any external devices from your DiskStation, and then unplug the network cable to monitor the status of hibernation.


If your DiskStation can go into hibernation without any services/packages/external devices, then you could enable them back one by one to see which one is the root cause.


If the above check does not fix the problem, please let us know the time frame you run this check (without all the known factors) and help us retrieve the kernel log. It is a technical log file which gives us more detailed information about your system. Please see the instructions below to download the kernel log.


For DSM 5.0:
1. Log in with admin account or users with admin privileges.
2. Go to Menu > Support Center > Support Services, click on Generate logs to get the system debug log (debug.dat) and send it to us.


Thank you.