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Old 10-13-2001, 11:44 PM   #1
Registered: Jun 2001
Distribution: Fedora 22
Posts: 371

Rep: Reputation: 30
mouse problems with kvm switches

i have a kvm switch and the mouse on linux used to work fine. now i got a new one and the mouse no longer works in X. the problem is the mouse gets stuck in the right hand corner of the X screen and i'm stuck.

so then i tried to change my micro$oft intellimouse to "IMPS/2" in XF86Config-4 which worked for awhile (prior to that, the mouse was simply "PS/2").

is this normal? is IMPS/2 the standard fix for this problem?

Last edited by punt; 10-14-2001 at 12:06 AM.
Old 10-14-2001, 04:16 AM   #2
Senior Member
Registered: Jun 2001
Posts: 1,635

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if it works, then it's the fix.

actually, the ps/2 driver for linux was originally developed for older mouses - the ones with two buttons and no wheel. it's one of the first mouse protocols that was developed. the imps/2 has better support for most of the mouses today, which have the wheel, three buttons, or a button built into the wheel, ect.
this is my mouse section in XF86Config-4:

Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Device" "/dev/mouse"
Option "Protocol" "IMPS/2"
Option "Emulate3Buttons" "off"
Option "ZAxisMapping" "4 5"

the "Emulate3Buttons" was an option for mouses with two buttons, and pushing them both simultaneously emulated three, and the "ZAxisMapping" has something to do with the wheel.
Old 10-15-2002, 01:13 AM   #3
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Registered: Oct 2002
Location: Houston Texas
Distribution: Fedora Core
Posts: 24

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This helped a lot on an old Dell Dimension p133 thanks! Although things got better my pointer still skips somtimes. Do you think increassing the baud rate might help? If so do you know how to change it?
Old 11-18-2004, 06:04 PM   #4
Frank Zappa
LQ Newbie
Registered: Nov 2004
Posts: 7

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OK, I think my problem is related to this, so I won't post an entirely new thread.

I have a 4-port KVM switch, and I have 2 linux boxes hooked up to it. When installing Mandrake, I think I told it the wrong mouse driver :-(

Therefore, whenever I turn on my computer, the mouse driver won't load properly! If I log in as myself, screw around with the config, and then log out, it works!

How can I get it to get it right the first time every time? (Not the second)

Thanks a lot!


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