DV-I cable with VGA integrated video: Resolution?

[kerumbo]

Just got a new computer, decided I'd just get the integrated video since
I'm not a gamer and might have other uses for the PCI-e slot. It's the Intel
Graphics Media Accelerator 3100, which I believe has an Nvidia chipset.
Running WinXP (yes, with a new computer! -- my choice).

Meanwhile I had a flat-screen monitor with native res 1680x1050. Before the
PC arrived, I attached a DV-I cable to the flat-screen, assuming that any
new computer (even using integrated video) would have a DV-I connection.
Wrong!

So I attached the monitor with VGA cable, although the DV-I cable was also
still on the monitor. I set the res at 1680x1050, which looked fine. After
getting the computer reasonably set-up, I began some housekeeping, and
removed, from the monitor, the DV-I cable that could not be connected to the
PC.

Well, I was suprised by what happened: Suddenly 1680x1050 was NOT available
in Control Panel|Display, and I could not find any resolution that looked
decent. Attempts to set higher resolutions got "beyond the range of analog"
or similar error message. Several reboots did not help.

I never thought this would help, but just to trouble-shoot, I reattached the
DV-I cable to the monitor (leaving the VGA cable connected at both ends),
the other end of the DV-I cable just hanging off the desk. And then, all
resolutions including 1680x1050 were avaailable again!

Obviously the connection is analog, since the DV-I cable is only attached to
the monitor. But I am getting a resolution supposedly unavailable in analog.
It seems that for some reason, there are resolutions I can only get when the
DV-I cable is attached (even though only to the monitor -- an LG Flatron
L227WTG).

So I am happy that it now works, but my question is: How weird is this? Is
this a "feature", or a bug? Just wondering, but I'd like to understand
this.







__________ Information from ESET Smart Security, version of virus signature database 4051 (20090504) __________

The message was checked by ESET Smart Security.

http://www.eset.com

 

[JS]

Some LCD displays have an option is the setup menu
to switch which connector (DVI or Analog) is active.

You could try disconnecting the DVI (with the Display off)
and then re-attached the Analog connector and see what happens.

 

[Ted Kerin]

Some LCD displays have an option is the setup menu
to switch which connector (DVI or Analog) is active.

You could try disconnecting the DVI (with the Display off)
and then re-attached the Analog connector and see what happens.

Interesting! Thanks, JS! I'll give that a try.

 

[Paul]

Just got a new computer, decided I'd just get the integrated video since
I'm not a gamer and might have other uses for the PCI-e slot. It's the Intel
Graphics Media Accelerator 3100, which I believe has an Nvidia chipset.
Running WinXP (yes, with a new computer! -- my choice).

Meanwhile I had a flat-screen monitor with native res 1680x1050. Before the
PC arrived, I attached a DV-I cable to the flat-screen, assuming that any
new computer (even using integrated video) would have a DV-I connection.
Wrong!

So I attached the monitor with VGA cable, although the DV-I cable was also
still on the monitor. I set the res at 1680x1050, which looked fine. After
getting the computer reasonably set-up, I began some housekeeping, and
removed, from the monitor, the DV-I cable that could not be connected to the
PC.

Well, I was suprised by what happened: Suddenly 1680x1050 was NOT available
in Control Panel|Display, and I could not find any resolution that looked
decent. Attempts to set higher resolutions got "beyond the range of analog"
or similar error message. Several reboots did not help.

I never thought this would help, but just to trouble-shoot, I reattached the
DV-I cable to the monitor (leaving the VGA cable connected at both ends),
the other end of the DV-I cable just hanging off the desk. And then, all
resolutions including 1680x1050 were avaailable again!

Obviously the connection is analog, since the DV-I cable is only attached to
the monitor. But I am getting a resolution supposedly unavailable in analog.
It seems that for some reason, there are resolutions I can only get when the
DV-I cable is attached (even though only to the monitor -- an LG Flatron
L227WTG).

So I am happy that it now works, but my question is: How weird is this? Is
this a "feature", or a bug? Just wondering, but I'd like to understand
this.

I download the manual here, and there is no suggestion in there, of such a
behavior.

http://www.lge.com/us/support/produ...merModelCode=L227WTG-PF&initialTab=documents#

According to the specs, it offers 1680 x 1050 @ 60Hz on both the DVI-D and
the VGA connector. I don't see a reason for the panel to be ignoring
its native resolution of 1680 x 1050.

It is possible that the monitor can detect a cable attached to the
DVI-D connector. Check to make sure the cable attached, is DVI-D as
well. DVI-D male, would not have the pins in the cross shaped
area installed. But once the cable is detected, why should the
monitor make any response at all ? There is no reason to
restrict resolutions at the panel end.

http://upload.wikimedia.org/wikiped...r_Types.svg/277px-DVI_Connector_Types.svg.png

I'd say it is a bug.

Maybe the panel has more functions, than are being used in this
application, and one of those functions becomes activated.

Paul

 

[smlunatick]

 Just got a new computer, decided I'd just get the integrated video since
I'm not a gamer and might have other uses for the PCI-e slot. It's the Intel
Graphics Media Accelerator 3100, which I believe has an Nvidia chipset.
Running WinXP (yes, with a new computer! -- my choice).

Meanwhile I had a flat-screen monitor with native res 1680x1050.  Before the
PC arrived, I attached a DV-I cable to the flat-screen, assuming that any
new computer (even using integrated video) would have a DV-I connection.
Wrong!

So I attached the monitor with VGA cable, although the DV-I cable was also
still on the monitor.  I set the res at 1680x1050, which looked fine. After
getting the computer reasonably set-up, I began some housekeeping, and
removed, from the monitor, the DV-I cable that could not be connected to the
PC.

Well, I was suprised by what happened: Suddenly 1680x1050 was NOT available
in Control Panel|Display, and I could not find any resolution that looked
decent. Attempts to set higher resolutions got "beyond the range of analog"
or similar error message.  Several reboots did not help.

I never thought this would help, but just to trouble-shoot, I reattached the
DV-I cable to the monitor (leaving the VGA cable connected at both ends),
the other end of the DV-I cable just hanging off the desk. And then, all
resolutions including 1680x1050 were avaailable again!

Obviously the connection is analog, since the DV-I cable is only attachedto
the monitor. But I am getting a resolution supposedly unavailable in analog.
It seems that for some reason, there are resolutions I can only get when the
DV-I cable is attached (even though only to the monitor -- an LG Flatron
L227WTG).

So I am happy that it now works, but my question is:  How weird is this?  Is
this a "feature", or a bug?  Just wondering, but I'd like to understand
this.

__________ Information from ESET Smart Security, version of virus signature database 4051 (20090504) __________

The message was checked by ESET Smart Security.

http://www.eset.com

I do not believe that most Intel integrated video cards will not do
proper max resolution for most LCD monitors.

Also, for the PCI-Express slots, the PCI-Express x16 seems to be
geared to mostly the "enhanced" video cards. Most of the other PCI-
Express devices would be using the older PCI-Express x1 slots.
Without knowing the model of the selected motherboards, the PCI-
Express slots locations would be unknown. I currently have a 22 inch
Acer x223w LCD, DVI-D connected to a PCI-Express x16 nVidia 9600GT
video card, installed on an Intel DG31PR motherboard. I would have
difficulties to insert a PCI-Express x1 device as the PCI-Express x1
slot is "almost" under my PCI-Express x16 card. However, I did do a
quick look on the Internet and have yet to find a non-video card
device that I could need.

 

[Ted Kerin]

Just got a new computer, decided I'd just get the integrated video since
I'm not a gamer and might have other uses for the PCI-e slot. It's the
Intel Graphics Media Accelerator 3100, which I believe has an Nvidia
chipset. Running WinXP (yes, with a new computer! -- my choice).

Meanwhile I had a flat-screen monitor with native res 1680x1050. Before
the PC arrived, I attached a DV-I cable to the flat-screen, assuming that
any new computer (even using integrated video) would have a DV-I
connection. Wrong!

So I attached the monitor with VGA cable, although the DV-I cable was also
still on the monitor. I set the res at 1680x1050, which looked fine.
After getting the computer reasonably set-up, I began some housekeeping,
and removed, from the monitor, the DV-I cable that could not be connected
to the PC.

Well, I was suprised by what happened: Suddenly 1680x1050 was NOT
available in Control Panel|Display, and I could not find any resolution
that looked decent. Attempts to set higher resolutions got "beyond the
range of analog" or similar error message. Several reboots did not help.

I never thought this would help, but just to trouble-shoot, I reattached
the DV-I cable to the monitor (leaving the VGA cable connected at both
ends), the other end of the DV-I cable just hanging off the desk. And
then, all resolutions including 1680x1050 were avaailable again!

Obviously the connection is analog, since the DV-I cable is only attached
to the monitor. But I am getting a resolution supposedly unavailable in
analog. It seems that for some reason, there are resolutions I can only
get when the DV-I cable is attached (even though only to the monitor -- an
LG Flatron L227WTG).

So I am happy that it now works, but my question is: How weird is this?
Is this a "feature", or a bug? Just wondering, but I'd like to understand
this.

Thanks very much, Paul and smlunatick, for your insights and tips. I will
tinker with this a bit further, but it is very useful to know that this is
not a "normal" behavior with monitors and integrated video.