Mouse sometimes freezes using a KVM switch with a 2.6.x Kernel

From: Mark Hobley (
Date: 02/14/05

Date: Mon, 14 Feb 2005 11:08:05 GMT

I am using Debian Sarge with a 2.6 Kernel and Xfree86.

My mouse is a ps/2 mouse on /dev/psaux.

I have a manual 8 port keyboard, video, mouse switch.

When I throw the switch to another computer and back again, sometimes the
mouse cursor freezes and I have to reboot the computer to reactivate the mouse.

A while ago, on another computer, I used to use Debian Woody with a 2.4 Kernel
and an earlier version of Xfree86.

On that machine, when the mouse cursor hung, it was possible to kill the mouse
 daemon process (moused, I think) and restart it to revive the mouse.

I do not appear to have a mouse daemon process on the machine running Debian
 Sarge, so I am unable to do this.

Even if I shut down to single user mode and back into multi-user mode, the
mouse remains hung. The only way to free the mouse is to reboot the machine.

Is the mouse being driven from a kernel module or something now ? I can't find
a mouse daemon.

This problem is really annoying.

I do not wish to replace my KVM switch since it is big and expensive and a
replacement 8 way electronic switch would also be expensive.

Thanks in advance to anyone who can help.

This annoyance has been recorded at:



Mark Hobley
393 Quinton Road West
B32 1QE
Telephone: (0121) 247 1596
International: 0044 121 247 1596
Email: markhobley at hotpop dot do_not_type_this_bit com