Screen Resolution

[Barry Watzman]

I'd argue with you that since we both found different pinouts for the
VGA connector, and since your own reference for the later pinout then
goes on to state that "There are 3 different protocols defined for DDC"
......

That the only real conclusion is that DDC on a VGA analog display system
(monitor and video card) is simply not fully standardized and therefore
cannot be assumed or expected with a random monitor (many of which are
5+ years old) and a random video card (probably newer, but not
guaranteed to be 2006 new). Sure there may be combinations of some
monitors and some display cards where it's implemented and works in a
compatible manner, but there are probably a lot more where it doesn't
work due to not being implemented (or being implemented differently) on
either the monitor or the card.

* Barry Watzman:

Ok, on which of the 15 pins is the DDC implemented?

[you can get a list of the VGA connector pinout here:
http://www.interfacebus.com/Design_VGA_PinOuts.html]

This listing is way outdated, it only lists the pinout of the original
IBM VGA adapter almost 20 years ago...

Here is a more up2date link:
<http://www.technick.net/public/code/cp_dpage.php?aiocp_dp=pinconvid_vga_vesa_ddc>

This is what all somewhat newer gfx cards (i.e. most VESA Localbus and
MCA cards, all PCI/AGP/PCIe gfx cards) use...

But it also would have been enough if you'd at least read the page you
reffered to because on the bottom it refers to SVGA with what also DDC
has been introduced...

There are 4 bits for "monitor ID", but the standard interface doesn't
have a DDC communication channel as far as I know.

It does.

BTW: would you please STOP SENDING EMAIL COPIES of your usenet postings?
Discussion starts here and takes place here and not by mail. Sending
email copies is regarded as very rude behavior, especially when there is
absolutely no reason to do so. So please stop doing that. Thanks!

Benjamin

 

[Benjamin Gawert]

* Barry Watzman:

I'd argue with you that since we both found different pinouts for the
VGA connector, and since your own reference for the later pinout then
goes on to state that "There are 3 different protocols defined for DDC"
.....

Right, since DDC development didn't stand still but continued. But even
latest gfx cards support both DDC and DDC2x...

That the only real conclusion is that DDC on a VGA analog display system
(monitor and video card) is simply not fully standardized and therefore
cannot be assumed or expected with a random monitor (many of which are
5+ years old) and a random video card (probably newer, but not
guaranteed to be 2006 new).

That's of course nonsense. DDC is definitely a standard, managed by the
VESA organization.

Sure there may be combinations of some
monitors and some display cards where it's implemented and works in a
compatible manner, but there are probably a lot more where it doesn't
work due to not being implemented (or being implemented differently) on
either the monitor or the card.

Again, this is BS. DDC and DDC2 works with all devices that supports it
(all gfx cards except really ancient methusalems, and basically all CRTs
that are say less than 11 years old, are not connected by a BNC cable
(which lacks the necessary lines for DDC) and which isn't totally crap.

And again please STOP SENDING ME EMAIL COPIES! Stop behaving like a
complete beginner!

Benjamin

 

[T Shadow]

I'd consider it if it would make a real difference.
I have no intention of hooking up our computer as a television/dvd
player and I'm not a gamer. I browse the net and paint in photoshop.
Would updating my graphics card make a difference to those activities?

Regarding the other option though, would downloading this diver solve
my problem?
https://support.ati.com/ics/support/KBAnswer.asp?questionID=1298

Thank-you everyone for your continuing help here.

My oldest PC has a Rage Pro. It has 4MB video ram. On the next computer I
started with a Xpert98 which has 8MB video ram, then went to a 128pro. The
speed up from 8 to the 32MB cards was significant displaying pictures from
my scanner.
These are P2 & P3 systems respectively. At some point, upgrading to better
video cards, the rest of your system becomes the bottleneck. I think chances
of getting bang for the buck are high though.

 

[Interfacebus.Engineer]

That listing is for the original VGA pinout [from 20 years ago]. There
are other pages on the site which list a more up-dated pinout. The page
called SVGA lists the most up-to-date pinout.

I've corrected the wording so people don't think the VGA pinout is
being used these days.

Leroy

* Barry Watzman:

Ok, on which of the 15 pins is the DDC implemented?

[you can get a list of the VGA connector pinout here:
http://www.interfacebus.com/Design_VGA_PinOuts.html]

This listing is way outdated, it only lists the pinout of the original
IBM VGA adapter almost 20 years ago...

Here is a more up2date link:
<http://www.technick.net/public/code/cp_dpage.php?aiocp_dp=pinconvid_vga_vesa_ddc>
This is what all somewhat newer gfx cards (i.e. most VESA Localbus and
MCA cards, all PCI/AGP/PCIe gfx cards) use...

But it also would have been enough if you'd at least read the page you
reffered to because on the bottom it refers to SVGA with what also DDC
has been introduced...

There are 4 bits for "monitor ID", but the standard interface doesn't
have a DDC communication channel as far as I know.

It does.

BTW: would you please STOP SENDING EMAIL COPIES of your usenet postings?
Discussion starts here and takes place here and not by mail. Sending
email copies is regarded as very rude behavior, especially when there is
absolutely no reason to do so. So please stop doing that. Thanks!

Benjamin

 

[Benjamin Gawert]

* (e-mail address removed):

That listing is for the original VGA pinout [from 20 years ago]. There
are other pages on the site which list a more up-dated pinout. The page
called SVGA lists the most up-to-date pinout.

I've corrected the wording so people don't think the VGA pinout is
being used these days.

Probably a good idea since the term "VGA" is still in use today and as
we see here can cause confusion...

Great site btw!

Benjamin