Re: KVM -> jumping mouse... still no solution?

[Anthony DiSante <orders@nodivisions.com>]

Rajendra P Mishra wrote:
>>I first got a KVM switch around the time of kernel 2.2.something, and when 
>>using it to switch to a Linux system, the mouse "freaks out."  It's fine if 
>>you don't move it, but if you move it N/E/NE it's really slow and jerky, and 
>>if you move it S/W/SW even a hair, it slams down to the SW corner of the 
>>screen and acts like you hit all the mouse's buttons 50 times simultaneously.
>>
>>When switching to an MS Windows system (any version from 98 on up; haven't 
>>tried anything earlier) the mouse works fine, it just pauses for maybe a 
>>second at first, during which I assume it's doing some kind of PS/2 reset.
>>
>>It used to be that switching out of X-windows with Ctrl-Alt-F[1-6] and then 
>>back to VT7 would reset the mouse, but that hasn't worked in about a year 
>>for me.  I was also able to run a little script to send a few specific chars 
>>to the mouse device that seemed to reset it... that too no longer works. 
>>The only thing that works now is unplugging the mouse from the KVM and then 
>>back in.
>>
>>The other day I came across this (kerneltrap.org/node/view/2199): "Use 
>>psmouse.proto=bare on the kernel command line, or proto=bare on the
>>psmouse module command line."  But that makes the mouse's scroll-wheel not 
>>work.  (And this problem doesn't exist with some of the mouse drivers, but 
>>it does with IMPS/2, which is the only one I've ever been able to get the 
>>scroll wheel working with.)
>>
>>Is there really no solution to this problem?  If Microsoft can figure it 
>>out, I'm sure someone in the Linux community can... not that I'm 
>>volunteering, of course...
 >
 > One quick solution I know of is to restart the gpm daemon,
 > (/etc/init.d/gpm  restart) that resets the mouse settings.
 > But this is not the correct way, there should be some way
 > where the driver automatically detects and resets the mouse.
 >

That doesn't work for me either.  Hmm... maybe it's because I'm using a 
Microsoft mouse... only plays nice with Windows systems?

-Anthony DiSante
http://nodivisions.com/