*BSD News Article 22040


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From: rkb55989@uxa.cso.uiuc.edu (Rafal Boni)
Newsgroups: comp.os.386bsd.questions
Subject: Re: Mouse problem...XFree86-1.3 on NetBSD 0.9
Date: 7 Oct 1993 18:43:36 GMT
Organization: University of Illinois at Urbana
Lines: 40
Message-ID: <291o0o$h37@vixen.cso.uiuc.edu>
References: <5OCT93.04385139@tifrvax.tifr.res.in> <MYCROFT.93Oct6062234@duality.gnu.ai.mit.edu>
NNTP-Posting-Host: uxa.cso.uiuc.edu

mycroft@duality.gnu.ai.mit.edu (Charles Hannum) writes:

>In article <5OCT93.04385139@tifrvax.tifr.res.in>
>bhiksha@tifrvax.tifr.res.in writes:

>   When i use a logitech 3-button mouse, (with the default XConfig),
>   i get very odd response: the cursor movements are staccatto and
>   dont seem to correlate to the mouse motions very much. Also, the
>   machine seems to be receiving a lot of button-clicks, even though i
>   dont touch the buttons and the screen goes haywire.

>This is odd.  These are symptoms of two things:

>* Using the wrong minor device number number.  The mouse should have
>minor number 1, not 0.  The MAKEDEV script gets this right.

>* There is a bug in XFree86 related to the boundary condition of
>negating -128, which causes large horizontal motions to cause spurious
>button clicks.  This has been worked around in the NetBSD drivers.
>Are you using the ones supplied in the NetBSD distribution?

	Hmm... I don't mean to start stakes burning or anything of that 
	nature, but....

	I have a Logitech C9 series mouse [3-button, old] at home that I 
	use w/my DOS PC.  This summer my BSD box came home with me, and 
	being sick of the $7.99 3-button feels-still-as-hell-cheapo mouse
	that I have been using, I figured I would hook up the nice Logitech
	mouse to it...

	The result: same problems as described above, BUT it's a serial mouse
	on the same port as the old mouse [hence minor/major versions should
	be OK, since the old mouse worked...], and even small movements suffered
	from the above symptoms [thus discrediting Charles Hannum's second
	theory...]

	Disclaimer: I didn't look into it very much, since I was playing with
	other stuff, and went back to the 3-button cheapo-mouse...

						--rafal