Recently I installed a card with 4 USB 2.0 ports in my computer, and
now when booting, I get the kernel debugger. I tried several safe mode
options and I found that "Disable user addons" let my computer boot
properly. Why?
Thanks in advance.
Marco.
Because the USB drivers are likely installed in the user tree
(/boot/home/config/add-ons/...) instead of the system one
(/boot/beos/system/add-ons/...).
I suggest you either remove the card, or try to remove the
controller backend that is causing the trouble.
Try moving one file at a time from:
/boot/home/config/add-ons/kernel/busses/usb/
and
/boot/home/config/add-ons/kernel/bus_managers/usb
until you boot without needing that option.
You could also try and submit patches to the Haiku USB stack :)
http://haiku-os.org/
François.