'no input' when using extension cable

[Guest]

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

[CC to mail is appreciated but not obliged]

Hello,

I have recently bought a VGA extension cable (5m, f->f) and a gender
changer (m-m). When I use them together to connect my monitor to my PC,
my monitor says "no input". But when I do the same with another PC and
another monitor, it works fine.

My monitor is a Medion MD1772LA, a few years old. My PC is a newly
bought Asus Pundit Barebone with SiS video chip.

What might be wrong?

yours,
Gerrit, who wishes to extend the distance from terminal to computer.

--
Ervaringen met het Syndroom van Asperger:
http://topjaklont.student.utwente.nl
Socialistische Partij:
http://www.sp.nl/

 

[Guest]

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

"Gerrit Holl" <Gerrit@nl.linux.org> wrote in message
news:slrnc6od93.3ml.Gerrit@topjaklont.student.utwente.nl...
> [CC to mail is appreciated but not obliged]
>
> Hello,
>
> I have recently bought a VGA extension cable (5m, f->f) and a gender
> changer (m-m). When I use them together to connect my monitor to my
PC,
> my monitor says "no input". But when I do the same with another PC and
> another monitor, it works fine.
>
> My monitor is a Medion MD1772LA, a few years old. My PC is a newly
> bought Asus Pundit Barebone with SiS video chip.
>
> What might be wrong?
>
> yours,
> Gerrit, who wishes to extend the distance from terminal to computer.
>
Could be that the resistance drop of the cable you bought is enough to
reduce the video signal such that your monitor cannot detect that
anything is attached. Try connecting the 'other monitor' to your PC with
this cable. Or try putting the graphics card from the 'other PC' into
your PC and see if it works then.

Mr N.

 

[Guest]

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

I'd bet that a 5+ meter video cable is too much of a capacitive load for the
onboard video chip to drive.

--
DaveW



"Gerrit Holl" <Gerrit@nl.linux.org> wrote in message
news:slrnc6od93.3ml.Gerrit@topjaklont.student.utwente.nl...
> [CC to mail is appreciated but not obliged]
>
> Hello,
>
> I have recently bought a VGA extension cable (5m, f->f) and a gender
> changer (m-m). When I use them together to connect my monitor to my PC,
> my monitor says "no input". But when I do the same with another PC and
> another monitor, it works fine.
>
> My monitor is a Medion MD1772LA, a few years old. My PC is a newly
> bought Asus Pundit Barebone with SiS video chip.
>
> What might be wrong?
>
> yours,
> Gerrit, who wishes to extend the distance from terminal to computer.
>
> --
> Ervaringen met het Syndroom van Asperger:
> http://topjaklont.student.utwente.nl
> Socialistische Partij:
> http://www.sp.nl/

 

[Guest]

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

On Thu, 1 Apr 2004 21:59:31 +0100, mrnobby <no@spam.please> wrote:
>> I have recently bought a VGA extension cable (5m, f->f) and a gender
>> changer (m-m). When I use them together to connect my monitor to my
> PC,
>> my monitor says "no input". But when I do the same with another PC and
>> another monitor, it works fine.

> Could be that the resistance drop of the cable you bought is enough to
> reduce the video signal such that your monitor cannot detect that
> anything is attached. Try connecting the 'other monitor' to your PC with
> this cable. Or try putting the graphics card from the 'other PC' into
> your PC and see if it works then.

Thanks for the information. I will try so as soon as I have the
opportunity (next monday) and report the result. My graphics card is an
onboard chipset, SiS 650. Suppose I find that either my monitor or my
graphics card is too weak - does that mean I need to replace it, or does
such a thing as a video amplifier (intesifier?) exist that would solve
the problem? I don't see it in the list of the shop where I bought the
cables, but it might of course be a specialist thing.

yours,
Gerrit.

--
Ervaringen met het Syndroom van Asperger:
http://topjaklont.student.utwente.nl
Socialistische Partij:
http://www.sp.nl/

 

[Guest]

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

"Gerrit Holl" <Gerrit@nl.linux.org> wrote in message
news:slrnc6qkus.c87.Gerrit@topjaklont.student.utwente.nl...
> On Thu, 1 Apr 2004 21:59:31 +0100, mrnobby <no@spam.please> wrote:
> >> I have recently bought a VGA extension cable (5m, f->f) and a
gender
> >> changer (m-m). When I use them together to connect my monitor to my
> > PC,
> >> my monitor says "no input". But when I do the same with another PC
and
> >> another monitor, it works fine.
>
> > Could be that the resistance drop of the cable you bought is enough
to
> > reduce the video signal such that your monitor cannot detect that
> > anything is attached. Try connecting the 'other monitor' to your PC
with
> > this cable. Or try putting the graphics card from the 'other PC'
into
> > your PC and see if it works then.
>
> Thanks for the information. I will try so as soon as I have the
> opportunity (next monday) and report the result. My graphics card is
an
> onboard chipset, SiS 650.
Can you disable the on board video so that you can insert an add-on
card?

> Suppose I find that either my monitor or my
> graphics card is too weak - does that mean I need to replace it, or
does
> such a thing as a video amplifier (intesifier?) exist that would solve
> the problem? I don't see it in the list of the shop where I bought the
> cables, but it might of course be a specialist thing.
I have seen video amplifiers for sale; can't remember the price but I
would imagine they would be very expensive, being a specialist bit of
equipment.

If you can prove that the on-board SIS video is not putting out a very
strong signal, i.e. another graphics card works, I would go with that
one or buy a new graphics card.
As the SIS is onboard, it could be that there is quite enough power
being fed to it. I am clutching at straws here, but it could be your PSU
is a bit weak or it could just be that SIS chipset (never liked them
myself let alone onboard graphics)!

Hope it works out for you,

bye for now

Mr N.

 

[Guest]

Archived from groups: comp.sys.ibm.pc.hardware.video (More info?)

mrnobby wrote in comp.sys.ibm.pc.hardware.video:

[snip]
> If you can prove that the on-board SIS video is not putting out a very
> strong signal, i.e. another graphics card works, I would go with that
> one or buy a new graphics card.
> As the SIS is onboard, it could be that there is quite enough power
> being fed to it. I am clutching at straws here, but it could be your
> PSU is a bit weak or it could just be that SIS chipset (never liked
> them myself let alone onboard graphics)!
[snip]

Hi,

I was just looking at another thread in this group.
Message-ID: <Xns94BBCF686BA2Ajohnchojohnchous@199.45.49.11>
Subject: What the heck is Input level?

It seems that there are different standards about what voltage
should be used for video card to monitor connections. I am
guessing that the SiS chip is using the newer lower voltage,
and I know that some monitors are configurable for 0.7Vp-p
or 1.0Vp-p. Check your monitor.


--
Sig goes here...
Peter D.