Radeon RV100 init fails with specific card+mobo - IRQ problem

[Meelis Roos]

> > Adding some printks reveals it calls
> > r100_init() -> radeon_irq_kms_init() -> drm_irq_install() ->
> > drm_dev_to_irq() and that fails. So no IRQ, no KMS.
> >
> > lspci does not show Interrupt like on some other PCI devices.
> > /proc/interrupts obviously does not contain the irq since we do not
> > register any yet.
> >
> > There is no BIOS option of "Enable IRQ for VGA" or similar (BIOS is
> > latest). Could this be the problem?
> >
> > What can I do to get KMS working on this computer?
> >
> > --
> > Meelis Roos (mroos at linux.ee)
> 
> Try booting with radeon.agp_mode=-1

radeon: `-1' invalid for parameter `agp_mode'

-- 
Meelis Roos (mroos at linux.ee)