Having a weird problem with my VS4000/90, was wondering if anyone had
ever come across it before.

When running DECWindows I get a graphics dropout for about 2 minutes.
The monitor goes into power saving, then about 2 minutes later it
pings back into life, still with DECWindows running as it was. This is
happening about every 15 minutes.

The VS4000/90 has a SPX graphics connected via a DEC VGA adapter to a
Iiyama flat panel.

Any clues?

Thanks, Mark.