Subject: Re: resetting USB ports?
To: Michael Graff <>
From: Steven M. Bellovin <>
List: current-users
Date: 04/13/2005 11:02:01
In message <>, Michael Graff writes:
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>On Tuesday 12 April 2005 17:19, Richard Rauch wrote:
>> I would rather suggest *disabling* IOAPIC.
>> I saw exactly your problem on my AMD64 box a year ago or so.  Somewhere,
>> I got the hint of disabling IOAPIC (I never turned on MPACPI).  The probl=
>> went away.
>I've got one better for ya.  :)
>I have tried both USB mice and PS/2 mice.  The USB port would sometimes just
>vanish, and to syslog it would look like a disconnected, then reconnected
>mouse.  Nothing was unplugged, and it would do it while idle and while in
>Switching (using control-alt-F1) to console, then back to X, would "fix" it,
>probably by causing X to reopen the mouse.

Hmm...  Following a suggestion I received privately, I switched to a 
text console, disconnected and reconnected the mouse, switched back, 
and had everything work.  I wonder if I can skip the disconnect/
reconnect part....

		--Prof. Steven M. Bellovin,