[ivtv-users] Why is HVR 1600 recognized on one system and not the other

[test]

Andy Walls:
You wrote that my dmesg problems are because of this...
//
>It means you were lucky on system A and your motherboard chipset help
>correct things when the CX23418 didn't respond properly to IO from the
>host CPU.

>Here's how to fix assuming you've got the latest version from the
>v4l-dvb repository at linuxtv.org:

># modprobe -r cx18
># modprobe cx18 mmio_ndelay=31

>or use a value of 61, 91, 121, 152 or some higher multiple of 30.3 ns
>until the CX23418 always responds reliably.  (The lowest value that
>works at first may not be reliable; then again, it might,)

I performed a modprobe -r cx18 and this is my result...

 test at ubuntu:~$ modprobe -r cx18
FATAL: Error removing cx18 (/lib/modules/2.6.24-21-generic/kernel/drivers/media/video/cx18/cx18.ko): Operation not permitted

What happened?
Do you think a reinstall and start from scratch may help?

Thanks,
Daryl