[PLUG] lcd care and feeding
Eric Wilhelm
scratchcomputing at gmail.com
Thu Feb 7 08:36:43 UTC 2008
# from Rich Shepard
# on Wednesday 06 February 2008 17:24:
> With my first LCD monitor I turned it off at night because I could
> see the glow when the lights were out. Burned it out in no time.
> Hitachi was good about a replacement, but now I just leave it on
> continuosly.
Turning it off burned it out?
>> I'm considering replacing my screensaver with:
>>
>> xset dpms force off
>
> I don't force it off, but the screen blanks in 10 minutes of no
> keyboard or trackball action, then it goes into sleep mode after a
> half-hour.
My meter shows off, suspend, and standby all exhibiting the same
behavior: the draw drops to 0.1A for a few seconds and then to about
0.01A.
My question is whether using a blank screen/screensaver is worth it at
all instead of just going straight to standby after e.g. 10 minutes.
Incidently, blank screen saves no power (though I guess it would prevent
ghosting.) Actually, a black blank screen uses more power than a white
one by about 0.02A (during normal operation the meter is below black
and above white.)
Thus, if there's nothing wrong with the extra power cycles, 30 minutes
of blank screen to the tune of 30W hardly seems worth it.
I don't really know what to make of your Hitachi story though -- are you
saying you left it blank during the day and manually turned it off at
night because the suspend would never kick-in? I could see how that
would run out the clock on the backlight.
--Eric
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