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Steve Pope  
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 More options May 4, 5:17 pm
Newsgroups: comp.sys.ibm.pc.hardware.video
From: spop...@speedymail.org (Steve Pope)
Date: Sun, 4 May 2008 21:17:49 +0000 (UTC)
Local: Sun, May 4 2008 5:17 pm
Subject: Monitor shuts off on older computer
I have a new Samsung 216BW monitor, which works correctly
with the modern computer I normally use it with.  However,
I sometimes want to connect it to the VGA port of an
older machine.  When I do this, the display works for
about a minute then shuts off displaying a "suboptimal
resolution" message.  I have to power cycle the monitor.

I'm not worried about the resolution setting being wrong --
it still displays okay -- but how do I get it to keep
from shutting off?

(Hopefully I explained this adequately, it's a little
hard to describe.)

Thanks,

Steve


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Bob Knowlden  
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 More options May 4, 11:03 pm
Newsgroups: comp.sys.ibm.pc.hardware.video
From: "Bob Knowlden" <nk...@comcast.net>
Date: Sun, 4 May 2008 23:03:24 -0400
Local: Sun, May 4 2008 11:03 pm
Subject: Re: Monitor shuts off on older computer
According to the manual:

http://downloadcenter.samsung.com/content/UM/200706/20070608130836359...

you can get the "not optimum mode" message if something has happened to the
signal, or the signal is out of range. I don't know why that would be
affected by power cycling the monitor.

Is the display set to 60 Hz (in the old PC's control panel)? The 216BW is
spec'd to allow 75 Hz, but 60 should be safe. I have no idea why the monitor
should run for any length of time at all with an out-of-range signal, but
it's worth a look.

Good luck.

Return address scrambled. Replace nkbob with bobkn.

"Steve Pope" <spop...@speedymail.org> wrote in message

news:fvl95t$ipg$1@blue.rahul.net...


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Steve Pope  
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 More options May 5, 2:54 am
Newsgroups: comp.sys.ibm.pc.hardware.video
From: spop...@speedymail.org (Steve Pope)
Date: Mon, 5 May 2008 06:54:35 +0000 (UTC)
Local: Mon, May 5 2008 2:54 am
Subject: Re: Monitor shuts off on older computer

Bob Knowlden <nk...@comcast.net> wrote:
>According to the manual:
>http://downloadcenter.samsung.com/content/UM/200706/20070608130836359...
>you can get the "not optimum mode" message if something has happened to the
>signal, or the signal is out of range. I don't know why that would be
>affected by power cycling the monitor.
>Is the display set to 60 Hz (in the old PC's control panel)? The 216BW is
>spec'd to allow 75 Hz, but 60 should be safe. I have no idea why the monitor
>should run for any length of time at all with an out-of-range signal, but
>it's worth a look.
>Good luck.

Thanks.  As another point of information, this monitor does
not exhibit the shutting-off problem with a different,
not quite as old computer also set for a "non optimum" resolution
(i.e. 1280 x 1024, when the monitor wants 1680 x 1050).
It is only with this very old computer (which I still wish
to use sometimes) that the problem occurs.  I'm thinking it
has a quite old rev of the VGA spec on its display card.

Steve


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Mike Ruskai  
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 More options May 5, 3:22 am
Newsgroups: comp.sys.ibm.pc.hardware.video
From: Mike Ruskai <BUTthann...@DONTearthlinkLIKE.netSPAM>
Date: Mon, 05 May 2008 03:22:36 -0400
Local: Mon, May 5 2008 3:22 am
Subject: Re: Monitor shuts off on older computer
On or about Mon, 5 May 2008 06:54:35 +0000 (UTC) did spop...@speedymail.org
(Steve Pope) dribble thusly:

You missed the important part of his advice.  The resolution is essentially
irrelevant.  It's the refresh rate you need to look at.  If the old computer
is set to 75Hz, but fluctuates, that could explain why the monitor gives up
after a minute.  Make sure the refresh on the old computer is set to 60Hz.
--
 - Mike

Ignore the Python in me to send e-mail.


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Steve Pope  
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 More options May 5, 3:48 am
Newsgroups: comp.sys.ibm.pc.hardware.video
From: spop...@speedymail.org (Steve Pope)
Date: Mon, 5 May 2008 07:48:47 +0000 (UTC)
Local: Mon, May 5 2008 3:48 am
Subject: Re: Monitor shuts off on older computer
Mike Ruskai  <BUTthann...@DONTearthlinkLIKE.netSPAM> wrote:

>You missed the important part of his advice.  The resolution is essentially
>irrelevant.  It's the refresh rate you need to look at.  If the old computer
>is set to 75Hz, but fluctuates, that could explain why the monitor gives up
>after a minute.  Make sure the refresh on the old computer is set to 60Hz.

Thanks, sorry for being a bit slow here.  I'll look at the
refresh rate.

Steve


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Steve Pope  
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 More options May 5, 4:24 am
Newsgroups: comp.sys.ibm.pc.hardware.video
From: spop...@speedymail.org (Steve Pope)
Date: Mon, 5 May 2008 08:24:48 +0000 (UTC)
Local: Mon, May 5 2008 4:24 am
Subject: Re: Monitor shuts off on older computer

Steve Pope <spop...@speedymail.org> wrote:
>Mike Ruskai  <BUTthann...@DONTearthlinkLIKE.netSPAM> wrote:
>>You missed the important part of his advice.  The resolution is essentially
>>irrelevant.  It's the refresh rate you need to look at.  If the old computer
>>is set to 75Hz, but fluctuates, that could explain why the monitor gives up
>>after a minute.  Make sure the refresh on the old computer is set to 60Hz.
>Thanks, sorry for being a bit slow here.  I'll look at the
>refresh rate.

That did seem to be the problem.  I had to go into
safe mode to get it to function well enough that I could
reset the refresh rate, which I may have had at some very
high setting like 85 Hz.  

Thanks for your help!

Steve


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