Cyclone 3c905B-TX Locking Problem

[Christopher Zarrella]

All,

I discovered the interrupt conflict in /proc/pci.  It was the nvidia video 
driver.  I moved the NIC to a different PCI slot and it worked.  It seems
that video cards don't want to share IRQs either.  Suggest a statement
be added under the 'Special Dell Instruction' part of vortex.html indicating 
that a lock up problem is most certainly an IRQ conflict and the solution
is to move the NIC to another slot.

Thanks all for the help.  Everything looks good.

-- 
Christopher Zarrella
serge@io.com
Linux user

Donald Becker wrote:
> 
> On Fri, 26 Feb 1999, =?ISO-8859-1?Q?B=E5rd_Dahlmo?= wrote:
> 
> > On Thu, 25 Feb 1999, Christopher Zarrella wrote:
> >
> > >Need help with an exasperating problem.  I've installed a PCI-3c905B-TX
> > >card on my system.  I've been able to register the card with the 3c59x
> > >v0.99H driver.  Unfortunately, when I execute the ifup command the
> > >system completely locks. =20
> 
> > Check /proc/interrupts
> >
> > I had the same experience, but with another nic (Realtek 8029). When I
> > booted, the machine hung as soon as it got a packet in.
> >
> > When I disabled my SCSI-adapter (Advansys ABP940U) that was on the same
> > IRQ, the nic worked well.
> >
> > Funny thing is that now I have two NIC (3C905B 100bTX, Realtek 8029) and
> > the Advansys card on the same IRQ (in another machine) and it works.
> 
> The SCSI driver wasn't expecting to share the interrupt: it assumed that the
> next interrupt was meant for it.  Most SCSI drivers have now been updated.
> 
> The Ethernet drivers have always (since 1992) expected multiple adapters
> will be in the machine and that they might be sharing interrupts.
> 
> The new APIC code in 2.2.0 makes additional interrupts available when used
> with SMP-capable Intel chipsets.  The result is that IRQs that were
> previously shared are now exclusive.   When the APIC is enabled two cards
> that previously appeared to be sharing IRQ11 are now on IRQ18 and IRQ19.
> 
> Donald Becker                                     becker@cesdis.gsfc.nasa.gov
> USRA-CESDIS, Center of Excellence in Space Data and Information Sciences.
> Code 930.5, Goddard Space Flight Center,  Greenbelt, MD.  20771
> 301-286-0882         http://cesdis.gsfc.nasa.gov/people/becker/whoiam.html