[nSLUG] Fast scroll wheel action in X triggers paste or browser history navigation

D G Teed donald.teed at gmail.com
Wed Aug 15 22:20:40 ADT 2007

Hi Aaron, and thanks for the suggestions.

I did try SendCoreEvents "true", as I also saw that was set up on my
work computer.  But it didn't help.  It seems those 2 options you
mention are good for laptops or other arrangements of multiple
pointing devices.  In my case it is a desktop system with just one.


On 8/15/07, Aaron Spanik <aaronspanik at eastlink.ca> wrote:
> On Wed, 15 Aug 2007 15:33:42 -0300
> D G Teed <donald.teed at gmail.com> wrote:
> > On 8/15/07, George N. White III <gnwiii at gmail.com> wrote:
> > > Gmail thinks this is spam -- I guess "fast" "action" and "X" are
> > > enough to trigger the filter.
> >
> > Funny, as it is sent from gmail, but then of course it is recreated
> > as a new email from mailman.
> >
> > > I've learned to be a bit deliberate with my scroll wheel, and use
> > > <Pg-Up> <Pg-Dn> in browsers.   I suspect it is all to easy to enter
> > > "clicks" when scrolling fast.  It does seem like I've had more glitches
> > > while scrolling recently (older ATI and Nvidia graphics hardware,
> > > KVM on a debian machine, USB mouse on Fedora 7).
> >
> > I can reproduce my problem at will.  I just don't like doing it in an aterm
> > because I don't know what will happen.  One time I entered
> > a game of larn! (or whatever the name of the modern variant is now)
> > I hope I didn't delete anything as well.  Certainly would be
> > dangerous to run a term as root with a wild scroll wheel!
> >
> > Scroll wheel is one of those things that once you start using it, it
> > becomes a habit for navigating, and so I have to choose between
> > not using X or fixing the problem on that system.
> >
> > There is a program which will capture Xevents.  Forget the name
> > right now, but I think I'll run that and possibly submit a bug report.
> As others have mentioned, that program is xev and will tell you what
> events X itself is seeing.
> That said, I once had some problems with scrolling that nearly drove me
> insane.  I can't remember all of the various elements to it (might have
> been an older config file with a newer X server or something) but the
> crux of the matter was something like setting "SendCoreEvents" and
> "AlwaysCore" in the InputDevice section corresponding to the Mouse.
> Those two options are equivalent and caused duplication.  This was
> exacerbated in my case because it wasn't just a standard 3-button mouse
> with wheel, so there was some xmodmap magic going on.  As I recall, the
> first "clicks" would be the proper scroll and the others wouldn't be
> remapped, so they'd do undefined things.
> Although it certainly sounds almost like what you're going through I'm
> not sure how relevant that is, considering that AlwaysCore and
> SendCoreEvents have disappeared from "man Xorg" at least since the
> version I'm running (7.1.99) and seem to have been replaced with the
> "CoreKeyboard" and "CorePointer" modifiers in the InputDevice section.
> Work a check, anyway, I guess.
> /a
> --
> aaronspanik at eastlink.ca
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