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Re: Obscure ethernet/IDE trouble

hazelsct@mit.edu (Adam C Powell IV) writes:

> Greetings,
> I'm having bizarre troubles with the base 2.1 system (2.0.36-scsimod) on
> an Abit BP6 dual-celeron system with Triton IDE DMA chipset and twin
> 3C905 ethernet cards.  After my first net access (via eth0), be it ping
> or apt-get update or whatever, the next disk access causes an IRQ
> problem:
> hda: irq timeout: status=0x58 { DriveReady SeekComplete DataRequest }
> hda: disabled DMA
> hdb: disabled DMA
> [same for hdc and hdd]
> ide1: reset: success
> ide0: reset: success
> so IDE-DMA gets dropped and the interfaces reset, after which the net is
> inaccessible!
> There shouldn't be an IRQ conflict, because the net cards are on IRQs 10
> and 5, and the ide0 and ide1 are at 14 and 15 respectively.  I tried
> network stop; ifconfig eth0 down; rmmod 3c59x; modprobe 3c59x; network
> start but the network is still dead.  It remains dead until I do a full
> halt and power down, after which it comes back- until the next disk
> access.
> Okay, here's another: I halt, hit reset, it boots, and now I get:
> eth0: Host error, FIFO diagnostic register 8000.
> repeated over and over, interspersed with another error message which I
> can't see (it's scrolling too fast) except that it ends in "Temporarily
> disabling functions".  Sometimes.  Sometimes I just don't see this
> problem at all.  But it sounds related to the other problems.

First, you need to look around in your /var/log/ files to see if
you can learn more about your error.

Second look at /proc/ioports and /proc/interrupts (and perhaps others)
for any hints at what is going on.

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