Subject: Re: resetting USB ports?
To: Michael Graff <>
From: Jared D. McNeill <>
List: current-users
Date: 04/13/2005 11:13:05
On Wed, 2005-04-13 at 10:00 -0400, Michael Graff wrote:
> 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 problem
> > 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 
> use.
> Switching (using control-alt-F1) to console, then back to X, would "fix" it, 
> probably by causing X to reopen the mouse.
> Now, on the same system, I'm seeing PS/2 issues that appear to be the same 
> thing.  Switching to console then back to X also "fixes" this.  I don't see 
> the PS/2 port vanish, but for all practical purposes it becomes dead.

Maybe it's completely unrelated, but I woke up this morning to find my
mouse had "disappeared" on my Dell Latitude D600. Ctrl+Alt+Backspace,
the X server restarted, and everything was fine afterwords. I didn't
check the logs, just figured the cat was messing around with things
while I was asleep.