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Date:      Thu, 18 Jun 1998 00:03:50 -0500 (CDT)
From:      Chris Dillon <cdillon@wolves.k12.mo.us>
To:        Greg Lehey <grog@lemis.com>
Cc:        Duncan Barclay <dmlb@ragnet.demon.co.uk>, freebsd-hardware@FreeBSD.ORG
Subject:   Re: PS/2 Mouse resolution.
Message-ID:  <Pine.BSF.3.96.980618000109.2382B-100000@duey.hs.wolves.k12.mo.us>
In-Reply-To: <19980612155802.25601@papillon.lemis.com>

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On Fri, 12 Jun 1998, Greg Lehey wrote:

> On Thu, 11 June 1998 at 18:34:38 -0500, Chris Dillon wrote:
> > On Thu, 11 Jun 1998, Duncan Barclay wrote:
> >
> >> Just upgraded my motherboard to one with a PS/2 port on it (FIC PT-2007, 430TX).
> >>
> >> I moved my mouse (Logicitech MouseMan) from sio0 to the PS/2 port and it is now
> >> "slower" and a pain to use under X. I guess the resolution has increased, can
> >> moused be used to fake it back top where it was before?
> >>
> >> I've tried upping the X acceleration but don't really like it, feels wrong.
> >>
> >> I don't want to go back the serial port, I want it for the console of
> >> my (new) crash box.
> >
> > I noticed something similar when I bought this new trackball, which sits
> > on the PS/2 port.  The cursor zips across the screen fast enough, but
> > selecting text in an xterm is a whole different story.  It used to be that
> > when I clicked/dragged to select text the "reverse" selection followed the
> > cursor perfectly.  Now it lags behind the cursor and updates in bursts.
> > Weird, eh?  Anyone know why this happens?
> 
> Interesting.  The "updates in bursts" looks like an interrupt problem.
> I've had similar problems, but I hadn't associated them with the
> change from serial to PS/2.  I'm currently using a MouseMan on a
> serial port on my laptop, and it works fine, but I've been having real
> problems on my "real" machine with a PS/2 port.  I thought it was the
> screen resolution (1600x1200) which was causing the problems, but now
> I'll investigate more carefully.
> 

If it were an interrupt problem, wouldn't the cursor itself move jumpily
and not just the inverse selection?  It moves even more fluidly than with
my serial mouse (of course, it was a cheap low-res mouse).


-- Chris Dillon - cdillon@wolves.k12.mo.us - cdillon@inter-linc.net
/* FreeBSD: The fastest and most stable server OS on the planet.
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