[mythtv-users] OT: UPS (Eaton UPS)

[Mark Lord]

On 12-02-23 03:45 AM, Terjesen Jens Peder wrote:
..
> I have gotten this to work satisfactory now.
> 
> The shutdown worked, and works well with the Eaton software.
> My problem was startup after power returned. The UPS would not turn off the power after shutdown, meaning the autostart on power return in BIOS did not work.
> 
> When trying out various settings for shutdown yesterday, among others switching the setting for power cut off on and off, the software suddenly lost contact with the UPS. After reconnecting I tried power down again, and suddenly the UPS switched off power after the specified time.
> 
> So now it is set to wait 30 seconds before initiating graceful shutdown.
> I have timed the shutdown to take approximately 30 seconds, so time allowed for shutdown is set to 60 seconds just to have some headroom, and after these 60 seconds the UPS powers off the outlets.
> On power return the autostart in BIOS kicks in.
> 
> So I think the only scenario where the system will not start up again is if the power returns in the 60 second window between start of shutdown and cut off of power from the UPS.
> 
> My MB does not seem to support wake on USB, and it also cuts power to the USB ports when hibernating or is switched off.
> I do have another box with a MB that at least keeps power on USB. I might test a bit further with this if I get the time.


For anyone else following along, APC branded UPSs don't have these issues.
Shutdown / powerfail / etc.. all work, with no time windows for failure.
Their support for Linus has been good for a very long time now too.

Cheers