Solaris 10 Unable to use "Dumb" KVM (Avocent SwitchView USB 4-Port), Works Under Solaris 8

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From	brianjester@gmail.com
Newsgroups	comp.sys.sun.admin
Subject	Solaris 10 Unable to use "Dumb" KVM (Avocent SwitchView USB 4-Port), Works Under Solaris 8
Date	Tue, 28 Feb 2012 09:27:45 -0800 (PST)
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I have two Sun Blade 150 clients, one loaded with Solaris 8, the other Solaris 10.

I noticed that if I put the clients on a "dumb" KVM (Avocent SwitchView USB 4-Port), that the Solaris 8 machine works when switching between KVM channels (the /var/adm/messages log shows 20+ usb related events from kernel and usba)

The Solaris 10 machine will not reconnect to the KVM, and I have to SSH into the box and reboot it.

What's going on with Solaris 10?  Why is it not as robust as Solaris 8 when the USB keyboard/mouse is switched on a "dumb" KVM?

Anyone had similar experiences?

When I SSH into the misbehaving Solaris 10 machine and do a "cfgadm", I can see that the USB devices have disconnected, but they are never able to reconnect, no matter what combination of cfgadm commands I try.  Only a reboot of Solaris 10 fixes the problem.  A sub-optimal solution.

And yes, newer "smart" KVM's work (IOGear GCS1734), just not the Avocent.

Any help is appreciated.

Brian

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Solaris 10 Unable to use "Dumb" KVM (Avocent SwitchView USB 4-Port), Works Under Solaris 8 brianjester@gmail.com - 2012-02-28 09:27 -0800
  Re: Solaris 10 Unable to use "Dumb" KVM (Avocent SwitchView USB 4-Port), Works Under Solaris 8 Doug McIntyre <merlyn@geeks.org> - 2012-02-28 19:10 +0000

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