FS#21778 - [xf86-input-synaptics] - Pointer gets crazy to the point of being unusable.

Attached to Project: Arch Linux
Opened by Musikolo (Musikolo) - Sunday, 21 November 2010, 18:54 GMT
Last edited by Andrea Scarpino (BaSh) - Thursday, 25 November 2010, 07:39 GMT
Task Type Bug Report
Category Packages: Extra
Status Closed
Assigned To No-one
Architecture i686
Severity Medium
Priority Normal
Reported Version
Due in Version Undecided
Due Date Undecided
Percent Complete 100%
Votes 0
Private No

Details

Description:
Latest upgrade of xf86-input-synaptics package breaks the normal operation of my synaptics touchpad. The pointer is absolutely crazy making almost imposible to click where wanted. However, downgranding to the previous version (1.3.0-1) fixes all.

Additional info:
* package version(s)
1.3.0-2

* config and/or log files etc.
0 [musiolo@Kalisto ~]$ cat /etc/X11/xorg.conf.d/10-synaptics.conf
1 Section "InputClass"
2 Identifier "touchpad catchall"
3 Driver "synaptics"
4 MatchIsTouchpad "on"
5 MatchDevicePath "/dev/input/event*"
6 Option "TapButton1" "1"
7 Option "TapButton2" "2"
8 Option "TapButton3" "3"
9 EndSection

I could see that version 1.3.0-1 doesn't have the line 5 and works seamlessly. Thus, I figure out it should be reason of the problem.
This task depends upon

Closed by  Andrea Scarpino (BaSh)
Thursday, 25 November 2010, 07:39 GMT
Reason for closing:  Not a bug
Comment by Matthew (piezoelectric) - Monday, 22 November 2010, 05:21 GMT
This update doesn't change much. Is it possible that you were actually using evdev beforehand, and only now are you actually using synaptics?
Comment by Jan de Groot (JGC) - Monday, 22 November 2010, 09:27 GMT
-1 and -2 don't have any differences besides the configuration change and recompile against a more recent xorg-server and protocols. The MatchDevicePath line in the configuration actually limits device selection, it doesn't extend. Posting an Xorg.0.log with both previous and current version of the synaptics driver would be nice to diagnose this problem.
Comment by Musikolo (Musikolo) - Tuesday, 23 November 2010, 20:25 GMT
Hi everyone,

Sorry for the time I've spent to reply, but I've been quite busy and it's been impossible to me do find a gap to deal with issue properly.

Regarding the mouse issue, I have found a solution to it. The only thing I have had to do is to comment out the next section in the /etc/X11/xorg.conf file:

# NOTE: It has to be commented out from version 1.3.0-2 of xf86-input-synaptics package.
#Section "InputClass"
# Identifier "evdev touchpad catchall"
# MatchIsTouchpad "on"
# MatchDevicePath "/dev/input/event*"
# Driver "evdev"
#EndSection

Besides this, I found the next differences in Xorg.0.log between both versions:

[musikolo@mypc ~]$ grep synaptics Xorg.0.log.1
[ 36.084] (II) LoadModule: "synaptics"
[ 36.085] (II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
[ 36.095] (II) Module synaptics: vendor="X.Org Foundation"
[musikolo@mypc ~]$ grep synaptics Xorg.0.log.2
[musikolo@mypc ~]$

Thus, I think it would be nice to inform users about this change so anyone has to suffer this problem as I did.

Best regards and thanks a million for your unconditional help! ;-)

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