Sven> I was wondering if it is possible to write a program to turn off the
Sven> monitor of a Sparc. Does anybody know how?
Sven> When rebooting under Solaris 2 the machine turns off the monitor for a
Sven> few seconds so I guess there must be a way to somehow do the same.
Andrew> It doesn't actually turn the power off, but I know what you want :-)
Sven> I've also seen a Sun that could be turned on just like a Mac by
Sven> pressing a key on the keyboard (though I don't remember what kind of
Sven> machine type was).
Andrew> I think the sparc5 and later. The ones with the momentary power
Andrew> switch which don't stick in an "on" position.
Sven> Turning off just the video like screenblankers do is not what I
Sven> want. The idea is to have a daemon* around that turns off the
Sven> monitor if noone is sitting at the machine between 6pm and 6am (esp. on
Andrew> If you have solaris 2.4 you should have gotten a little manual on the
Andrew> power management functions. I don't remember whether the software was
Andrew> installed with the main 2.4 or if it was on the other cd; but the
Andrew> command you want is dtpower. It has three nifty functions: 1) put
Andrew> monitor into power saving mode when it blanks, 2) suspend/resume the
Andrew> whole system, 3) automatically suspend the whole system during
Andrew> certain hours if idle.
I received mail from Glenn Weinberg and Matthieu Herrb and both told me
about the same. The software comes on an update CD called
'upd_sol_2_4_hw1194_smcc' and contains those tools. There is also an
AnswerBook library called 'Solaris 2.4 on Sun Hardware' which describes the
tools and their installation. So, no problem at all.
The only thing that bothers me is that the power configuration (either by
hand or via dtpower) is a bit too unflexible. Setting the monitor into power
savings mode isn't a problem because it has no effect on the machine and
But this autoshutdown feature is too restricted. People here like to lock
their screens and go home but still have some programs running. So what I
need is something like 'turn everything off if noone is logged in and the
machine hasn't been used for several hours or on weekends'.