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Old 01-09-2008, 02:00 AM   #1
Registered: Aug 2006
Posts: 37

Rep: Reputation: 15
KVm switch creating problems for Linux server

I connected 2 windows servers (IBM x335) and one linux server to a KVM
switch (apex unc 10303) ..and now a days ..only for linux server.
some problems are showing..

like ..
Mouse will move some time..some windows will pop -up like that..(only for linux server)

I replaced the key board and mouse..KVm is working fine for all the other windows servers..

Only RHEL 4 servers it is showing these problems.
Old 01-09-2008, 12:24 PM   #2
Registered: Nov 2002
Location: Greensboro, NC
Posts: 182

Rep: Reputation: 30
Did you switch out your keyboard and/or mouse with any of the servers powered up? This causes problems on some KVM switches and will lead to the problem you described (see my last paragraph below).

Otherwise the problem is likely in your KVM switch. I had the same problem using a Belkin KVM switch with Linux, the mouse would go crazy with random button presses and open windows, but would work fine on Windows systems. I had this problem with several Linux distros.

I found that the Avocent Switchview KVM switches work great with Linux. See if you can find one on eBay or just try another brand from a local store that you can return if it still has the same problems.

I also found that when connecting the user mouse (and mayby the keyboard), you need to have all the servers off and the kb and mouse plugged into the KVM before you power on any of your servers. The Avocent is powered from the keyboard connection and everything needs to be shut down to truly power off the KVM when swapping your mouse or keyboard.


Last edited by rje_NC; 01-09-2008 at 12:28 PM.
Old 01-09-2008, 01:31 PM   #3
Registered: Dec 2007
Location: UK
Distribution: Mageia, MX, Manjaro, OpenSuSE, PCLinuxOS
Posts: 214

Rep: Reputation: 35
Hello crackerB

I'm having the same sort of problem that rje_NC describes with my Belkin KVM. However I have access to three other KVM's made by Digitus that work perfectly.

It does seem that some KVM's are more suited to Linux than others.


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