Mouse suddenly gets detached and reattached

[Pieter de Goeje]

On Saturday 25 August 2007, Bahman M. wrote:
> Hi all,
>
> I just installed X (xorg 7.2) and am using FluxBox. It's working well
> and there are no problems. However, the mouse gets suddenly detached
> and immediately reattached. I can't say exactly how often this
> happens, roughly about 6~7 times a day.
>
> # dmesg | tail -n 4
> ums0: at uhub0 port 1 (addr 2) disconnected
> ums0: detached
> ums0: vendor 0x05e3 USB Mouse, rev 1.10/1.00, addr 2, iclass 3/1
> ums0: 5 buttons and Z dir.
>
> # sudo sysctl -a | grep ums
> dev.ums.0.%desc: vendor 0x05e3 USB Mouse, rev 1.10/1.00, addr 2, iclass 3/1
> dev.ums.0.%driver: ums
> dev.ums.0.%location: port=0 interface=0
> dev.ums.0.%pnpinfo: vendor=0x05e3 product=0x1205 devclass=0x00
> devsubclass=0x00 release=0x0100 sernum="" intclass=0x03
> intsubclass=0x01
> dev.ums.0.%parent: uhub0
>
> # uname -ai
> FreeBSD attila 6.2-RELEASE FreeBSD 6.2-RELEASE #0: Fri Jan 12 10:40:27
> UTC 2007     root at dessler.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC
>  i386 GENERIC
>
> Is it sign of a problem? In fact I don't care about the hardware as it
> can be easily replaced, I'm afraid that there's something wrong with
> software.
>
> Thanks in advance for your help.
>
> Bahman
An obvious test would be to connect the mouse to another usb port and/or 
controller. Maybe the mouse is flaky; try exchanging it with another. There 
could be a fracture in the mouse cord.

Try to rule out hardware failure first.

Hope this helps,
Pieter de Goeje