NVIDIA driver / internal modem irq conflict

[Kent Hauser]

Hi,

I'm having trouble with an IRQ conflict I can't figure out how to resolve.
I tried KDE (which is great), but this required the NVIDIA driver. However,
this driver conflicts with my modem. If the driver is loaded, then the system
locks up when accessing the modem. If I remove the NVIDIA driver from
/boot/loader.conf, modem works fine.

I tried moving the modem to different slots, but no joy. (The modem likes the 
slot it's in, but not the others.)

Any help would be appreciated.

System running 4.8-STABLE with X11 & NVidia built within last week.
(4.8-STABLE #2: Mon Apr 14 07:42:46 HST 2003)

Kernel probe info w/o NVIDIA (modem works):

at boot prompt enter:
> unload all
> load kernel
> load snd_emu10k
> boot

Apr 14 09:30:27 chapel-hill /kernel: pci1: <PCI bus> on pcib1
Apr 14 09:30:27 chapel-hill /kernel: pci1: <NVidia Riva TNT2 graphics 
accelerator> at 0.0 irq 11

Apr 14 09:30:27 chapel-hill /kernel: sio0: <3COM PCI FaxModem> port 
0x1428-0x142f irq 11 at device 14.0 on pci0
Apr 14 09:30:27 chapel-hill /kernel: sio0: moving to sio2
Apr 14 09:30:27 chapel-hill /kernel: sio2: type 16550A

Apr 14 09:30:27 chapel-hill /kernel: sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 
on isa0
Apr 14 09:30:27 chapel-hill /kernel: sio0: type 16550A
Apr 14 09:30:27 chapel-hill /kernel: sio1 at port 0x2f8-0x2ff irq 3 on isa0
Apr 14 09:30:27 chapel-hill /kernel: sio1: type 16550A
==========

Kernel probe info with NVIDIA (system locks up then modem accessed):

Method: just let it boot and load the nvidia.ko module:

Apr 14 09:32:26 chapel-hill /kernel: Preloaded elf module "agp.ko" at 
0xc06b9280.
Apr 14 09:32:26 chapel-hill /kernel: Preloaded elf module "nvidia.ko" at 
0xc06b931c.

Apr 14 09:32:26 chapel-hill /kernel: pci1: <PCI bus> on pcib1
Apr 14 09:32:26 chapel-hill /kernel: nvidia0: <RIVA TNT2> mem 
0xfc000000-0xfdffffff,0xf5000000-0xf5ffffff irq 11 at device 0.0 on pci1

Apr 14 09:32:26 chapel-hill /kernel: sio0: <3COM PCI FaxModem> port 
0x1428-0x142f irq 11 at device 14.0 on pci0
Apr 14 09:32:26 chapel-hill /kernel: sio0: moving to sio2
Apr 14 09:32:26 chapel-hill /kernel: sio2: type 16550A
Apr 14 09:32:26 chapel-hill /kernel: sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 
on isa0
Apr 14 09:32:26 chapel-hill /kernel: sio0: type 16550A
Apr 14 09:32:26 chapel-hill /kernel: sio1 at port 0x2f8-0x2ff irq 3 on isa0
Apr 14 09:32:26 chapel-hill /kernel: sio1: type 16550A
=========