Could you compile a kernel with USB_DEBUG?
Next time the mouse dies, break into DDB and
set usbdebug=5, umsdebug=5 and see if it says
anything when you wiggle the mouse, or unplug it.

	-- Lennart

MLH wrote:
> Jeff Rizzo wrote:
> 
>>Martijn van Buul wrote:
>>
>>>It occurred to me that Lennart Augustsson wrote in
>>>gmane.os.netbsd.current:
>>>
>>>
>>>>I'm very interested in the circumstances involved in this,
>>>>since I've never had a mouse go dead myself.
>>>
>>>My Microsoft optical mouse dies on a semi-frequent basis, but I suspect
>>>that this is related to it being connected via an (electronic, PS/2) KVM
>>>switch. Every now and then (Once per week, or so), the mouse will
>>>shutdown - but *only* on the NetBSD output on the KVM! Restarting X will
>>>get it back.
>>
>>Not sure if this is related, but I have USB keyboard/mouse on a USB kvm
>>switch, and whenever I switch back to NetBSD, the mouse is dead in X
>>until I switch virtual consoles away from the X server and back.  I've
>>thought many times about troubleshooting this, but never actually done
>>anything about it... it's been happening since early 1.6 days, at least,
>>maybe before.  I also have a microsoft optical mouse, but I'm pretty
>>sure it's happened with others as well.
> 
> 
> I just had my Logitech mouse 'go dark' again, as it does about once
> a week. It always and only does it when I have locked my KDE session
> and happens right as the display is refreshing after being unlocked.
> No syslog message. Sometimes it recovers when I toggle the console
> switch but not often. 
> 
> I can unplug and plug into various usb ports but this time it didn't
> recover. I had to restart xdm.
> 
> Apr 28 09:48:14 kingu /netbsd: uhidev0: at uhub0 port 1 (addr 2) disconnected
> Apr 28 09:48:15 kingu /netbsd: wsmouse0 detached
> Apr 28 09:48:15 kingu /netbsd: ums0 detached
> Apr 28 09:48:15 kingu /netbsd: uhidev0 detached
> Apr 28 09:48:18 kingu /netbsd: uhidev0 at uhub0 port 1 configuration 1 interface 0
> Apr 28 09:48:18 kingu /netbsd:
> Apr 28 09:48:18 kingu /netbsd: uhidev0: Logitech USB-PS/2 Optical Mouse, rev 2.00/11.10, addr 2, iclass 3/1
> Apr 28 09:48:18 kingu /netbsd: ums0 at uhidev0: 3 buttons and Z dir.
> Apr 28 09:48:18 kingu /netbsd: wsmouse0 at ums0
> Apr 28 09:48:18 kingu /netbsd:  mux 0
> 
> Apr 28 09:51:32 kingu /netbsd: uhidev0: at uhub0 port 1 (addr 2) disconnected
> Apr 28 09:51:32 kingu /netbsd: wsmouse0 detached
> Apr 28 09:51:32 kingu /netbsd: ums0 detached
> Apr 28 09:51:32 kingu /netbsd: uhidev0 detached
> Apr 28 09:51:55 kingu /netbsd: uhidev0 at uhub1 port 1 configuration 1 interface 0
> Apr 28 09:51:55 kingu /netbsd:
> Apr 28 09:51:55 kingu /netbsd: uhidev0: Logitech USB-PS/2 Optical Mouse, rev 2.00/11.10, addr 2, iclass 3/1
> Apr 28 09:51:55 kingu /netbsd: ums0 at uhidev0: 3 buttons and Z dir.
> Apr 28 09:51:55 kingu /netbsd: wsmouse0 at ums0
> Apr 28 09:51:55 kingu /netbsd:  mux 0
>