Video resolution at boot time?

The problem:
Video card: ATI Radeo X7200 (VGA & DVI)
Monitor: Dell 2407WFP-HC @ 1920x1200 @ 60 Hz (VGA & DVI)
KVM: Avocent SwitchViewDVI

I want to run this in DVI mode because that is what the KVM supports, 
and because the display looks better that way. 

If I boot with the monitor connected to the video card using the VGA 
connector, it works. If I boot with the monitor connected using the 
DVI connection, I get an error from the monitor telling me to switch 
to 1920 x 1200 @ 60 Hz.

What determines the output resolution of the video card at boot time?

Is there any way to set this?

Thanks!
-- 
Tom Brown, Catherder
thomabrown at gmail dot com

Hi Tom,

Tom Brown wrote:
> The problem:
> Video card: ATI Radeo X7200 (VGA & DVI)
> Monitor: Dell 2407WFP-HC @ 1920x1200 @ 60 Hz (VGA & DVI)
> KVM: Avocent SwitchViewDVI
> 
> I want to run this in DVI mode because that is what the KVM supports, 
> and because the display looks better that way. 
> 
> If I boot with the monitor connected to the video card using the VGA 
> connector, it works. If I boot with the monitor connected using the 
> DVI connection, I get an error from the monitor telling me to switch 
> to 1920 x 1200 @ 60 Hz.

I don't believe that this is the Signal-Quality, why you are using the 
DVI-Port! Signal Quality should only be of interest in a VGA-Configuration.
But who knows!?
Has you ever made a test without the KVM, also a direct (DVI)Connection 
between your Card and your Monitor!?

It could also be, that your Monitor has a Problem with the initial used 
Resolution and/or Refresh-Rate of your Card!
Don't supports your Monitor all Standard Resolutions, like 640x480 and so!?
Is the initial Refresh-Rate to high than can you nothing do.

A Friend of me has the same Problem since Years, but this is only a 
short Moment until the OS (in his case Windows or Linux) comes into the 
Game!

> What determines the output resolution of the video card at boot time?

I mean that makes the Monitor alone! Better i'm sure that this makes you 
Monitor, i found the Error-Msg of Tom's System in the Monitor-User-Guide!
I expect you gets such a nice Hardware (Monitor) generated small Window, 
like the On-Screen-Menu, with the Error-Msg inside.

> Is there any way to set this?

Sorry, not that i knows!

But the Boot-Process should correct the Situation, or is the error so 
hard that your System can not boot? May be you should test another 
Monitor or another Card, if this is possible.

regards
    Thorsten

Hi Tom

Tom Brown wrote:
> The problem:
> Video card: ATI Radeo X7200 (VGA & DVI)
> Monitor: Dell 2407WFP-HC @ 1920x1200 @ 60 Hz (VGA & DVI)
> KVM: Avocent SwitchViewDVI
> 
> I want to run this in DVI mode because that is what the KVM supports, 
> and because the display looks better that way. 
> 
> If I boot with the monitor connected to the video card using the VGA 
> connector, it works. If I boot with the monitor connected using the 
> DVI connection, I get an error from the monitor telling me to switch 
> to 1920 x 1200 @ 60 Hz.
> 
> What determines the output resolution of the video card at boot time?
> 
> Is there any way to set this?
> 
> Thanks!



A DVI connection should work automatically with the "native"
resolution 
of the monitor - and I believe the refresh is always going to be 60Hz 
with DVI.

Possible causes of above problem when trying to use DVI are all hardware 
related; in this case I would suspect a bad lead or a dying graphics 
card. I guess it is possible for some sort of incompatibility to exist 
between graphics card and monitor due to either using some sort of 
non-standard approach - but unlikely.

Do you have a DVI to VGA adapter handy? You could then test if the DVI 
output on the card actually works.

Does the monitor automatically switch to whichever is the active input? 
- My Dell 1707FP has to be switched manually between VGA and DVI inputs 
hence the question.

Regards

Pete