Power management questions

Hi all,

another question regarding the Sun Blade 1500. I have X working now (thank
you!) and while the screen colour depth and resolution aren't perfect it is
useable and I am therefore happy. The problem I have now is that if I leave
the workstation unattended for long enough, the monitor goes into power
saving mode and there is nothing I can do to rouse it from that state. The
monitor itself is normally quite capable of handling going in and out of a
standby mode as I use it with Linux/Windows 7 from time to time. This is not
restricted to X sessions I must note - if it's left at the console it will
go black and nothing I do (key press/ mouse wiggle) bring it back to life.
The system is still up - SSH sessions remain viable and tell me it's working
but I can't get anything on the screen at all.

Does anyone have any ideas? I've searched the OpenBSD FAQ's but I will admit
that the volume of data there is somewhat overwhelming at times. I've also
checked SunSolve and haven't really found much joy there either.

Thanks,

Angus