> > So it seems I have continuous interrupts being generated
> > on pin C. Trouble is I don't anything on pin C according to
> > lspci.
>
> lspci dumps card interrupt pins, but you set chipset interrupt
> pins and routing between these is highly dependent on your motherboard.
>
> > Is this likely to be a hardware bug?
>
> No. I'd bet that it's XFree driver enabling videocard interrupts
> by mistake and not servicing them.
Well, this occurs in single user mode immediately after powering on.
Also, lspci shows the graphics card on pin A, and indeed if I've
setpci'd pin C to an alternative IRQ, X still works.
Any idea how to figure out the source of the interrupt? I've run
setpci to dump register 3d on all devices which is listed as the
interrupt pin for some devices, but it comes up with nothing.
I presume this interrupt is going to have some, however small,
effect on my system, so it would be nice to eliminate it.
One other question, from what I can gather all handlers linked
to the PCI interrupt are called each time the PCI irq is
generated, but the handlers don't seem to check that their
device generated the interrupt. Is that correct?
-- paul666 @mailandnews com
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/