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kern/44362: USB port n reset failed
>Synopsis: USB port n reset failed
>Arrival-Date: Sun Jan 09 17:35:00 +0000 2011
>Originator: Bob Nestor
>Release: NetBSD 5.1 (GENERIC) amd64
NetBSD bandit.home.net 5.1 NetBSD 5.1 (GENERIC) #0: Sat Nov 6 13:19:33 UTC
My monitor, keyboard and mouse are connected thru an IOgear GCS634U KVM switch.
The keyboard and mouse are USB devices. When the KVM switch is commanded to
switch devices to a different computer, NetBSD detects the USB disconnects and
logs the events. When switched back to the NetBSD system the USB sub-system
usually detects the connects, logs the events and reconnects the devices.
Occasionally during a reconnect sequence the USB sub-system reports "port ?
reset failed" where "?" is the port for the mouse. At this point the mouse is
unusable. The only way to recover the NetBSD system at this point is to reboot.
The problem doesn't happen all the time, only about once in about 50
disconnect/reconnect cycles. Moving the USB connections to a different port on
the IOgear box doesn't help. The ports on the IOgear box are known to be
operational as they work with other non-NetBSD systems.
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