Re: hard crash despite UPS
Quoting Pigeon <email@example.com>:
> Messages only go from the UPS to the computer... but the UPS clearly
> receives something FROM the computer, which affects its LED... and
> you're supposed to use XON/XOFF ("software") flow control.
> My guess is that the UPS is using the hardware flow control signals
> (RTS etc) to determine whether or not the computer is switched on;
> Linux initialises these differently from Windoze; and the UPS
> therefore thinks that the computer is not switched on, and doesn't
> bother to provide power when you kill the mains.
Stopping and starting the APC ssd daemon on my SuSE box does cause the
green LED to turn off and on. (Debian is on a sandbox machine and a
laptop. They don't rate a UPS).