According to Gevaerts Frank: While burning my CPU.
>
>
>
> On Thu, 24 Dec 1998, Mitch Marantz wrote:
>
> > I've just installed an Asus P5A-B Super 7 motherboard (Ali Aladdin V
> > AGPset chipset). Everything works except for my modem. The new board
> > seems to be generating an IRQ conflict.
> >
> > At first I booted up with my regular 2.0.33 kernel, and got the
> > following error message on bootup:
> >
> > pcibios_init : BIOS32 Service Directory structure at 0x000f9b80
> > pcibios_init : BIOS32 Service Directory entry at 0xf0530
> > pcibios_init : PCI BIOS revision 2.10 entry at 0xf0560
> > Probing PCI hardware.
> > Warning : Unknown PCI device (10b9:1541). Please read include/linux/pci.h
> > Warning : Unknown PCI device (10b9:5243). Please read include/linux/pci.h
> > Warning : Unknown PCI device (10b9:7101). Please read include/linux/pci.h
> > Warning : Unknown PCI device (10b9:1533). Please read include/linux/pci.h
> > Warning : Unknown PCI device (10b9:5229). Please read include/linux/pci.h
> > Calibrating delay loop.. ok - 663.55 BogoMIPS
> >
> > I next tried 2.0.36, which seemed to recognize the board.
> >
> > pcibios_init : BIOS32 Service Directory structure at 0x000f9b80
> > pcibios_init : BIOS32 Service Directory entry at 0xf0530
> > pcibios_init : PCI BIOS revision 2.10 entry at 0xf0560
> > Probing PCI hardware.
> > Calibrating delay loop.. ok - 663.55 BogoMIPS
> >
> > However, my modem (which I would set to IRQ 9 at bootup using setserial in
> > my etc/rc.d/rc.local file) was hanging up when I tried to use it, and
> > proc/interrupts was showing I now had a conflict on IRQ 9. IRQ 9 was the
> > only free IRQ before the new motherboard, and now it seems to be gone,
> > whether I'm using 2.0.33 or 2.0.36.
>
> On most (all?) motherboards, IRQ9 is the same as IRQ2, so it probably
> isn't really free.
Some motherboards insist on you defining IRQ2 when its realy IRQ9.
Which is realy what you mean.
Possably something changed in the kernel which demands IRQ2 to be defined
instead of IRQ9. I say this because of the differance you have between
kernel versions.
Check weather IRQ2 is defined as "cascade" with 'cat /proc/intterupts'
>
> Frank
>
> >
> > How can I free up an IRQ?
> >
> > Thanks.
> >
> >
> >
>
--
Regards Richard.
[EMAIL PROTECTED]
Happy New Year, and may all your troubles be small (ones).
