FC2 test1 and KVM switch

[Bill Estell]

Gene C. wrote:

>On Sunday 15 February 2004 14:13, Rick Johnson wrote:
>  
>
>>Gene C. wrote:
>>    
>>
>>>OK, I know, I know that Red Hat does not support the use of KVM switches.
>>>
>>>But, some of use depend on them.
>>>
>>>Is anyone experiencing problems with FC2 test1 and a KVM switch.
>>>
>>>I am using a Belkin 4 port Omni Cube and have had zero problems with it
>>>and previous releases.  With FC2 test1, when I first install and boot the
>>>system up everything works fine.
>>>
>>>However, if I switch to another system and then back to the FC2 test1
>>>system,   the mouse starts jumping all over the screen.  The keyboard and
>>>monitor seem to work fine.
>>>
>>>The mouse is a PS2 interface Logitech TrackMan Wheel.
>>>
>>>Anyone else seeing this (or positively NOT seeing it)?
>>>      
>>>
>>This has been a problem since Red Hat 7.whatever. The issue is with the
>>IMPS/2 mouse driver. I've found that switching away from the TTY and
>>back to it almost always clears it up. i.e. Ctrl+Alt+F8, then Alt+F7 (or
>>Ctrl+Alt+F7). This is a "workaround" I've lived with when using any
>>Belkin/Dlink/etc. KVM based on the same basic chipset with almost any
>>Linux and the IMPS/2 driver. That, or you can switch to a different
>>mouse driver (i.e. PS/2) and expect "normal" behavior.
>>    
>>
>
>Never had a problem before.  I just check the XF86Config for FC1 and FC2 and 
>both specify IMPS/2.  Switch to any VT does nothing.
>
>In addition, when I am on a console (e.g., VT1) and I move the trackball, I 
>get messages of the form:
>
>psmouse.c:  Explorer Mouse at isa0060/serio1/input0 lost syncronization, 
>thowing 2 bytes away.
>
>  
>

 see: Linux: 2.6 Input Drivers FAQ  http://kerneltrap.org/node/view/2199

Problem:
~~~~~~~~

When I switch my KVM, my PS/2 mouse goes all crazy.

Solution:
~~~~~~~~~

Use psmouse.proto=bare on the kernel command line, or proto=bare on the
psmouse module command line.