[4697] in RedHat Linux List
Re: irq conflict: ethernet and SCSI card
daemon@ATHENA.MIT.EDU (Allen Francom)
Sat Nov 16 13:59:41 1996
Date: Sun, 17 Nov 1996 02:01:27 -0800 (PST)
From: Allen Francom <afrancom@numedics.transport.com>
To: redhat-list@redhat.com
cc: hjll490@wadnr.gov, redhat-list@redhat.com
In-Reply-To: <Pine.SOL.3.95.961116101638.895A-100000@chaos>
Resent-From: redhat-list@redhat.com
Reply-To: redhat-list@redhat.com
I'd like to add that I believe for quite some time, since plug n play
came out, 3COM has included a setup diskette that allows you to disable
plug n play on the Ethernet card and manually configure it.
This is probably necessary in you case.
THX
-AEF
On Sat, 16 Nov 1996, Sheldon E. Newhouse wrote:
>
>
>
> Hi,
>
> Could anyone please help me on how to solve this irq conflict
> problem?
>
> My linux box gives me "SIOIFFLAG: Try Again" message after probing
> for ethernet card (3Com590). Checking /proc/interrupts and
> HOWTOs
> reveals that my SCSI (adaptec2940) uses the same interrupt (irq 9)
> as ethernet card (as seen using "dmesg").
>
> My PC's BIOS does not have any setting allows me change irqs for
> devices. Windows95 control panel says "can not change irq" from
> win95 neither.
>
> Any help is appreciated.
>
> I have the same setup. It took me some time to get it to work, but here
> is how I did it. After this procedure I have had no problems whatsoever.
>
> I should mention that I have a Gateway 2000 P5-133 with Intel
> motherboard, Triton Chipset.
>
> 1. The linux kernel seems to set the SCSI IRQ first, and it kept
> trying to give it IRQ 10. Then the ethernet insisted on IRQ
> 10 as well.
>
> 2. Using the setup command Press F1 while booting, you can change some of
> your IRQ's which may or may not be available. You will probably find
> that IRQ 3 or 4 are used by your serial ports. You can change
> those settings and make IRQ 3 available. Also allow IRQ 10 to be
> available. When I did this, my Adaptec 2040 found IRQ, my 3com590 got
> IRQ 10 and everything worked.
>
> 3. Now, I even have two ethernet cards, the 3COM590 at IRQ 11, and an
> NE2000 ISA clone at IRQ 9. Of course, the Adaptec 2940 still works
> very well in this system.
>
> 4. As an aside, you probably have the option to force another IRQ for the
> 3com using Windows 95 by setting jumpers on the board.
>
> HTH,
>
> -sen
> ---------------------------------------------------------------------------
> | Sheldon E. Newhouse | e-mail: sen1@math.msu.edu |
> | Mathematics Department | |
> | Michigan State University | telephone: 517-355-9684 |
> | E. Lansing, MI 48824-1027 USA | FAX: 517-432-1562 |
> ---------------------------------------------------------------------------
>
>
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