Bug 37306

Summary:	Elantech touchpad nearly unusable
Product:	xorg	Reporter:	Pier Paolo <pierpaolo.franco>
Component:	Input/synaptics	Assignee:	Peter Hutterer <peter.hutterer>
Status:	RESOLVED NOTOURBUG	QA Contact:
Severity:	major
Priority:	medium
Version:	unspecified
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Pier Paolo 2011-05-18 01:00:50 UTC

Hi all, this problem affect my netbook (Samsung NB30P) since squeeze 6.01.
I had not find my way through Google and all (i find some old pages about pre-
inkernel elantech patches to synaptics, but not more).

The problem is that, wathever shmconfig/xorg.conf.d or fdi or udev i use, my
touchpad cannot scroll (horiz and vert) in a reasonably predictable way, more
than a scrolling it is a "jumping" and quite randomly (to the top, the middle,
the bottom, the third...): a mess.

A WORKAROUND to this issue is to `modprobe psmouse proto=imps', but this completely disable twofinger horiz scroll, and in a netbook that is very annoying.

Thank you for all the fish,
and sorry for my bad en,
Pier Paolo.

PS: Even errors or operations on Xorg.log are quite random, some times it loads
a Machintosh mouse, fore ex.
This is recurrent instead: Query no Synaptics: 6003C8

Ref. to Debian bug 626507 for attachments too: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=626507

Comment 1 Pier Paolo 2011-05-19 09:07:37 UTC

I did not understand if my (this) bug is a duplicate of 21614 (https://bugs.freedesktop.org/show_bug.cgi?id=21614), however if someone explains to me what means this patch on gmane (http://article.gmane.org/gmane.linux.kernel.input/7121/match=elantech) we all better understand those reports according to me.

'cuse me but i'm in a hurry,
Pier Paolo.

Comment 2 Peter Hutterer 2012-04-19 18:19:15 UTC

This appears to have been fix by the kernel

commit 7f29f17b57255b6395046805a98bc663ded63fb8
Author: Éric Piel <E.A.B.Piel@tudelft.nl>
Date:   Thu Aug 5 23:51:49 2010 -0700

    Input: elantech - discard the first 2 positions on some firmwares

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