IRQ Problem?

I have a VAMP-WM15M monitor.

Our assembly test guys run programs in windows and in DOS. We have found
that when they ALT + TAB from the windows desktop to the DOS program that
sometimes the monitor freezes up. It either comes up with a distorted view of
the program and if you ALT + TAB back and forth a few times the screen might
come up normal or it will come up black and you can not ALT + TAB out of it.
I have been told that it might have something to do with switching from
standard VGA mode to Super VGA mode. I must unplug the monitor cable from the
computer for a few seconds and then plug it back in. Sometimes two or three
times to get the monitor back to normal. When I unplug this monitor and plug
in an external monitor I do not get this issue.

I was checking some IRQ settings in the device manager and found that I have
two items set to IRQ 5.

1. Under system devices I have
Intel 82801BA/BAM SMBus Controller - 2443

2. Under Display Adapters I have
ATI Mobility Radeon

Could this be causing my problem? If so what should I change? If not any
other ideas?

Could this be what is causing my problem?

 

This IRQ will be assigned to PCI, so there should be no problem with two
devices using the same IRQ as PCI is designed to share. If you want to
change things to see whether there is any effect, do it in BIOS setup under
an option for 'Manage PCI' or 'PCI IRQ' or similar. But note that manually
assigning PCI IRQs might have other odd effects.

It is unlikely that the IRQ is related to the problem - as already
discussed, this is an issue with the monitor's ability to detect and respond
to the change in configuration, as you have proved by substituting a
different display.

What happens when you run the DOS application in a DOS window that is not
full screen?
--
Jeff Richards
MS MVP (Windows - Shell/User)
"pjhjones" <pjhjones@discussions.microsoft.com> wrote in message
news:F726F89C-CC2D-4A06-B0E7-E8881C3A8D23@microsoft.com...
>I have a VAMP-WM15M monitor.
>
> Our assembly test guys run programs in windows and in DOS. We have found
> that when they ALT + TAB from the windows desktop to the DOS program that
> sometimes the monitor freezes up. It either comes up with a distorted view
> of
> the program and if you ALT + TAB back and forth a few times the screen
> might
> come up normal or it will come up black and you can not ALT + TAB out of
> it.
> I have been told that it might have something to do with switching from
> standard VGA mode to Super VGA mode. I must unplug the monitor cable from
> the
> computer for a few seconds and then plug it back in. Sometimes two or
> three
> times to get the monitor back to normal. When I unplug this monitor and
> plug
> in an external monitor I do not get this issue.
>
> I was checking some IRQ settings in the device manager and found that I
> have
> two items set to IRQ 5.
>
> 1. Under system devices I have
> Intel 82801BA/BAM SMBus Controller - 2443
>
> 2. Under Display Adapters I have
> ATI Mobility Radeon
>
> Could this be causing my problem? If so what should I change? If not any
> other ideas?
>
> Could this be what is causing my problem?

 

pjhjones wrote:
| I have a VAMP-WM15M monitor.
|
| Our assembly test guys run programs in windows and in DOS. We have
| found that when they ALT + TAB from the windows desktop to the DOS
| program that sometimes the monitor freezes up. It either comes up
| with a distorted view of the program and if you ALT + TAB back and
| forth a few times the screen might come up normal or it will come up
| black and you can not ALT + TAB out of it. I have been told that it
| might have something to do with switching from standard VGA mode to
| Super VGA mode. I must unplug the monitor cable from the computer for
| a few seconds and then plug it back in. Sometimes two or three times
| to get the monitor back to normal. When I unplug this monitor and
| plug in an external monitor I do not get this issue.
|
| I was checking some IRQ settings in the device manager and found that
| I have two items set to IRQ 5.
|
| 1. Under system devices I have
| Intel 82801BA/BAM SMBus Controller - 2443
|
| 2. Under Display Adapters I have
| ATI Mobility Radeon
|
| Could this be causing my problem? If so what should I change? If not
| any other ideas?
|
| Could this be what is causing my problem?

I don't know. But does it also happen when you get back to the GUI in
other ways, for instance...?...

(a) Alt+Space, & select Minimize.
(b) Alt+Space, Properties, Screen tab,
& bolt "Window" in the Usage section.


--
Thanks or Good Luck,
There may be humor in this post, and,
Naturally, you will not sue,
Should things get worse after this,
PCR
pcrrcp@netzero.net