Ethernet/SCSI IRQ Conflict on PCI??!!

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2 total messages Started by Michael Chui Tue, 05 Sep 1995 21:01

#13

Author: Michael Chui
Date: Tue, 05 Sep 1995 21:01

19 lines
1314 bytes

        I just installed the Redhat's Linux 1.2.8 release on a Gateway 200
Pentium 120 (Triton chipset).  PCI boards included an STB Trio64 video card,
a Buslogic 946C SCSI controller, and an SMC EtherPower adapter.  I recompiled
the RH 1.2.8 kernel with PCI BIOS support and Donald Becker's DEC 21040
driver for the EtherPower board.
	When I tried to ifconfig eth0 up, I received the following error:

SIOCSFFLAGS: Try Again

which the Ethernet-HOWTO explains as, "Some other device has taken the
IRQ that your ethercard is trying to use, and so the ethercard can't
use the IRQ."  Looking at /proc/interrupts, and comparing with
ifconfig eth0, I discovered that both the Buslogic SCSI controller and
the Ethernet adapter were assigned to IRQ 9.
        Isn't PCI plug-and-play supposed to assign different IRQ's to
different boards?  Any suggestions?

Michael Chui
mchui@cs.indiana.edu

Re: Ethernet/SCSI IRQ Conflict on PCI??!!

#14

Author: Ronald Miranda
Date: Wed, 06 Sep 1995 10:45

35 lines
1833 bytes

In <1995Sep5.160155.13430@news.cs.indiana.edu> "Michael Chui"
<mchui@cs.indiana.edu> writes: 
>
>        I just installed the Redhat's Linux 1.2.8 release on a Gateway
200
>Pentium 120 (Triton chipset).  PCI boards included an STB Trio64 video
card,
>a Buslogic 946C SCSI controller, and an SMC EtherPower adapter.  I
recompiled
>the RH 1.2.8 kernel with PCI BIOS support and Donald Becker's DEC
21040
>driver for the EtherPower board.
>	When I tried to ifconfig eth0 up, I received the following error:
>
>SIOCSFFLAGS: Try Again
>
>which the Ethernet-HOWTO explains as, "Some other device has taken the
>IRQ that your ethercard is trying to use, and so the ethercard can't
>use the IRQ."  Looking at /proc/interrupts, and comparing with
>ifconfig eth0, I discovered that both the Buslogic SCSI controller and
>the Ethernet adapter were assigned to IRQ 9.
>        Isn't PCI plug-and-play supposed to assign different IRQ's to
>different boards?  Any suggestions?
>
>Michael Chui
>mchui@cs.indiana.edu
>
>you need to disable the PnP support for your card using the smc config
program. Linux will not support PnP. I had to do this with my 3com card
and now it sets up, however I have the same message on my machine. So
the PnP turn off won't help with the SIOCSFFLAGS message. But if you
discover the answer to this I would appriciate the answer.

Ron

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