Comport problem

[HebieBug]

Have two modems one in COM3 and the other in Com4
On statup the event manager comes up with error as follows
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The control registers for COM1 overlaps with the COM4 control registers.
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A conflict has been detected between two drivers which claimed equivalent IRQs. Driver Serial, with device <\Device\Serial10000.Translated>, claimed an interrupt with Level in data address 0x28, vector in data address 0x2c and Affinity in data address 0x30.
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A conflict has been detected between two drivers which claimed equivalent IRQs. Driver IMGATAPI, with device <\Device\ScsiPort0.Translated>, claimed an interrupt with Level in data address 0x28, vector in data address 0x2c and Affinity in data address 0x30.
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The hardware resources for COM4 are already in use by another device.
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A conflict has been detected between two drivers which claimed equivalent IRQs. Driver Serial, with device <\Device\Serial3.Translated>, claimed an interrupt with Level in data address 0x28, vector in data address 0x2c and Affinity in data address 0x30.
----------------------------------------------------------
A conflict has been detected between two drivers which claimed equivalent IRQs. Driver ADPU160M, with device <\Device\ScsiPort2.Translated>, claimed an interrupt with Level in data address 0x28, vector in data address 0x2c and Affinity in data address 0x30.
----------------------------------------------------------
The hardware resources for COM4 are already in use by another device.
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So it looks like COM1 or COM4 have some config problems
anyone know how I can fix it

 

[Mubashir]

Yes, there seems to be a conflict between resources of the COM ports you've added. Are you using internal or external modems? By looking at the error messages, it appears that you are using internal modems. Do the following:
1. Disable the serial ports in the setup utility of your system.
2. Disable the parallel port if you are not using a local printer, just to free up a precious IRQ.
3. Add four ports, i.e. COM1 through COM4 and take default IRQ and Base I/O port addresses for each COM port. Restart the system.
4. Install the modems on the two available ports and test them.
5. If the error messages reappear, then delete the unused ports.

This is the procedure which I followed when I installed 5 modems in an NT box. Try this, and if doesn't work, we'll go deeper.
Mubashir

 

[peterve]

Make sure the com-ports use different IRQ's

Defaults :

COM1 : irq4 (address 3F8h)
COM2 : irq3 (address 2F8h)

COM3 and COM4 use the same IRQ as COM1 and COM2
(com3 : also irq4, com4 : also irq3) but when you add an additional I/O controller, you probably can set the IRQ manually

COM3 : address 3E8h : set IRQ to e.g. irq9
COM4 : address 2E8h : set IRQ to e.g. irq11


Now place the additional I/O controller in your box
In the computer BIOS, make sure COM1 and COM2 are not auto assigned, but you set them manually to 3F8/irq4 (com1) and 2F8/irq3 (com2)

Good luck Peter Van Eeckhoutte
peter.ve@pandora.be

 

[HebieBug]

Went into the bios and made the changes and then into control panel devices and changed over the settings.
But still it comes up with the same error messages
Strange problem here
It was working fine two weeks ago. Have not put any new software on or made any changes
The only thing I hve been doing on the server is standard backups and file management
ANy other ideas ?

 

[peterve]

Are you running Routing & Remote Access ?
If yes, try to disable it, make sure the service doesn't start when booting, and reboot the machine... Peter Van Eeckhoutte
peter.ve@pandora.be

 

[Mubashir]

Which service pack are you using?

 

[HebieBug]

Service pack 6.
Will try disabling the services that may use the com ports starting with RAS
Let you know of an answer latter on

 

[Mubashir]

I don't think disabling RAS services or routing will do any good. The problem is with the COM ports when they initialize at startup. There's seems to be an IRQ conflict.

Check the Resources tab on the Windows NT Diagnostics in Admin Tools. Focus on IRQ, I/O Port buttons. Look for any IRQ or I/O ports that may be in conflict with your modems. Also, if you can quote the Event ID from the Event Viewer, may be I can check my archived logs. Because I remember I have had this problem more than once. I just want to recall how I solved it, all I need are Event IDs.

Also check if there's any other application using the COM ports. And, how about deleting all ports, adding them back again and installing the modems....?

Just a thought. If you have recently done major configuration changes to your system, added or removed any hardware, try re-applying SP6.

Mubashir

 

[HebieBug]

Will need to head into work on a night time 'steath mission' tonight sounds good.. That's the odd thing about it. Have not put on any new software or made any system changes. One day it works fine and when I bring the server down and then back up suddenly the event log hs all these error messags..

 

[HebieBug]

Have found something interesting...
The brother MFC 8600 printer which is set on the network and does not go through a printer port...
So just in case removed the software for the printer...
Reboot the system and NT starts to go a little crazy on me..
Crazy:
Sometimes on statup once you have logged in the screen looses all icons and even the start menu disappears... Quick fix CTL-ALT-DEL and then task manager it majically re apears.
Opening my computer takes a long time and sometimes goes into not responding
Can't open NT explorrer
From a workstation it proforms fine and files ect can be accessed with no problems
Thniking of reaching for the install disks and blowing this server up
Anyone seen anything quite like this

 

[peterve]

have you tried re-applying SP6a ? Peter Van Eeckhoutte
peter.ve@pandora.be

 

[Mubashir]

Aha...so that's interesting?

If you found that a printer driver might be using any virtual COM port, you should have disabled the driver to use that port from the printer properties. Although, uninstalling a driver does not give so much problems. Now, if you aren't using any other printer, either local or network, set the startup type of the spooler service to manual startup. Delete any shortcuts present in the startup folder on the programs menu and reboot.

Check Event Viewer for any new errors. Also, check if the main culprit error of COM port conflict is appearing or not.

Mubashir