How many monitors?

[Pavel A.]

Can anybody tell, why Device Manager shows
two display adapters and three monitors in my
XP box - all present and in good state?

I have only one Dell LCD monitor, connected to the digital port of a
Gigabyte GA-G333M (onboard Intel G33 video)
Once the monitor was plugged into the VGA connector.

Is this a bug of the Intel display driver or what?
All this works well (knocking on the wood) but now I need to find the *real*
adapter and monitor by code.

Regards,
--PA

 

[M.I.5¾]

Can anybody tell, why Device Manager shows
two display adapters and three monitors in my
XP box - all present and in good state?

I have only one Dell LCD monitor, connected to the digital port of a
Gigabyte GA-G333M (onboard Intel G33 video)
Once the monitor was plugged into the VGA connector.

Is this a bug of the Intel display driver or what?
All this works well (knocking on the wood) but now I need to find the
*real* adapter and monitor by code.

If the display adapter is a dual head (most are these days), then they often
show up as two display adaptors (but not always, it depends on the driver).
They support 3 display devices (though only 2 at one time). The third
display device is the S-video output port, which is present even if not
brought out to a connector.

 

[Pavel A.]

If the display adapter is a dual head (most are these days), then they
often show up as two display adaptors (but not always, it depends on the
driver). They support 3 display devices (though only 2 at one time). The
third display device is the S-video output port, which is present even if
not brought out to a connector.

Thanks, maybe this makes sense. The 3rd video connector on this board is
hdmi.
But then, why two monitors show up as present?
Should the video adapter somehow detect that only one monitor is connected?

--PA

 

[smlunatick]

Thanks, maybe this makes sense. The 3rd video connector  on this board is
hdmi.
But then, why two monitors show up as present?
Should the video adapter somehow detect that only one monitor is connected?

--PA- Hide quoted text -

- Show quoted text -

It may not be a bug with the Intel driver but the hardware. I have
seen several PCs show 2 monitors when the driver is told their is only
one. As long as the there is not a problem with the hardware
(yellow !) you can / should just ignore this. If yoy remove the
"repeated" monitor, XP will re-install it.

 

[M.I.5¾]

Thanks, maybe this makes sense. The 3rd video connector on this board is
hdmi.
But then, why two monitors show up as present?
Should the video adapter somehow detect that only one monitor is
connected?

It probably does in the driver set up utility, but some drivers do strange
things. The driver on this PC flags up that 3 monitors are actually
connected. The graphic card (an Intel) may have provision for this in its
chips but there is only one video connector on the PC. It works, so I don't
bother about it.