> The DTU *resets* (i.e. restarts the firmware from scratch) on a > > few occasions such as the power surge and loss of connectivity to > > the server with a 1-2 minute timeout, and that can be managed by > > ARP, router or firewall tweaking as Bob Doolittle suggested recently. > > I understand what you need to do now.
> > A simple restart of the session (killing the X server, ending the > > last critical Kiosk app) should only cause a search for an avilable > > session (creation of a session) on the Sun Ray servers. The firmware > > still uses the same IP settings, list of servers, etc. so it's not > > truly resetting at this point. > indeed. > > What I did not get from this thread, why is it critical to *reset* > > the DTU? Should some USB-attached hardware or a display re-initialize? > > > As a side note, if the budget permits, you could try to go with > > a managed Rack PDU (i.e. an APC AP7920). These neat boxes allow you > > to log in remotely (including a scriptable CLI) and reset the power > > receptacles. Alternatively (and cheaper) you can get a small UPS > > with a serial or USB management, and try to use NUT (Network UPS > > tools) to trigger a shutdown of the UPS. At least the Powercom ones > > I had in campus long ago, powered back up as soon as they detected > > line voltage - and that was a matter of a few seconds. > Or we could provide some POE dongles for the SR2 and you can manage the POE switch to do this trick. patrick
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