Hello

I recently came across a frustrating problem. I swapped my usb mouse for another (the PC was off). When fedora 9 booted up, the new mouse was not working.
I put my old mouse back, it worked perfectly.
Also, when both mice were plugged into (2 separate usb ports, not through a usb hub) neither would work.
This is not a hardware problem. When I boot into windows they both work, even simultaneously.

Naturally the first thing that came to my mind was to try and automatically detect the new mouse, which I shouldn't even have to since I rebooted. But anyway I couldn't figure out how. I remember from my redhat 9 days that the relevant program was kudzu. But typing that in a console did not work. I search the file system for kudzu files, I only found a few libraries but no obvious file for an executable or shell script. No links in my gnome desktop for anything like new hardware detection.

I don't know if it will fix the problem but still I would like to know how to manually start new hardware detection.

As root you can try:
# /etc/init.d/kudzu restart

Actually u dev/hald should handle that without user intervention.
You may have a haldaemon script (service haldaemon restart) or
similar (I use Mandriva).
Have a look at dmesg when you plug in the mouse.
Look at "lsusb" as well, if you even can find the mouse there.

I have no kudzu in /etc/init.d.
So I still don't know of a new hardware wizard for a working system...

But the mouse problem is solved.
I restarted haldaemon, then plugged in the mouse and it worked immediately. They worked both at the same time.
I tried lsusb before and after as well and saw the new mouse listed.
dmesg threw a bunch of info at me that I couldn't interpret, but I did try that too prior to plugging the mouse in.

Thanks