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synaptics-0.15.0 - Howto reenable Tap-to-Click after upgrade

There has been an update to the xorg-driver for the synaptics touchpad device. Version 0.15.0 is renamed to "xf86-input-synaptics", is now licensed under the MIT License and can be downloaded from freedesktop.org.
I upgraded yesterday and experienced today that Tap-to-Click isn't working anymore. To solve this issue I added the following line to the configuration part of the synaptics driver in xorg.conf:

Code:

Option "TapButton1" "1"

This explicitly tells the synaptics driver to send a left-button event when tapping with one finger.

As this is not noted in neither INSTALL nor README I thought it best to note it here.
I've modified Robby's synaptics.SlackBuild to work with the new version, it is available together with a Slackware 12.1 package from my site:
http://www.liwjatan.at/

Heinz,

I got your mail about this - thanks for looking into (and more importantly, fixing) it. I've not had a chance to actually look at the new stuff yet, but I'm sure it's nice :-)

I am curious though - does the new code still require the psmouse module to be loaded with kernel defaults?

I don't know, and it will probably take some time until I can test it. But I will post the results here once I have them.

Although I don't like the Tap-to-Click feature, your code could fix the problem. Thx ;)

So, I had a look at the psmouse problems and found the following:

If loaded with kernel defaults, the kernel reports a "SynPS/2 Synaptics TouchPad", compared to a "PS/2 Synaptics TouchPad" when loaded with proto=imps.
Also some files /sys/class/input/input* change. For example uevent:

Code:

PHYSDEVPATH=/devices/platform/i8042/serio4

PHYSDEVBUS=serio

PHYSDEVDRIVER=psmouse

PRODUCT=11/2/7/25b1

NAME="SynPS/2 Synaptics TouchPad"

PHYS="isa0060/serio4/input0"

EV==b

KEY==6420 0 70000 0 0 0 0 0 0 0 0

ABS==11000003

MODALIAS=input:b0011v0002p0007e25B1-e0,1,3,k110,111,112,145,14A,14D,14E,ra0,1,18,1C,mlsfw

with kernel defaults, compared to

Code:

PHYSDEVPATH=/devices/platform/i8042/serio4

PHYSDEVBUS=serio

PHYSDEVDRIVER=psmouse

PRODUCT=11/2/1/0

NAME="PS/2 Synaptics TouchPad"

PHYS="isa0060/serio4/input0"

EV==7

KEY==70000 0 0 0 0 0 0 0 0

REL==3

MODALIAS=input:b0011v0002p0001e0000-e0,1,2,k110,111,112,r0,1,amlsfw

with proto=imps

If loaded with proto=imps, xorg logs the following:

Code:

(II) Synaptics touchpad driver version 0.15.0

Mouse0 no synaptics event device found (checked 17 nodes)

(**) Option "Device" "/dev/psaux"

(**) Option "LeftEdge" "1700"

(**) Option "RightEdge" "5300"

(**) Option "TopEdge" "1700"

(**) Option "BottomEdge" "4200"

(**) Option "FingerLow" "25"

(**) Option "FingerHigh" "30"

(**) Option "MaxTapTime" "180"

(**) Option "MaxTapMove" "220"

(**) Option "VertScrollDelta" "100"

(**) Option "CornerCoasting" "1"

(**) Option "TapButton1" "1"

(**) Option "TapButton2" "3"

(**) Option "CircularScrolling" "true"

(**) Option "CircScrollTrigger" "8"

Query no Synaptics: 6003C8

(EE) Mouse0 no synaptics touchpad detected and no repeater device

(EE) Mouse0 Unable to query/initialize Synaptics hardware.

(EE) PreInit failed for input device "Mouse0"

(II) UnloadModule: "synaptics"

From what I see there, this is not at all a problem of the synaptics-xorg module. It's the kernel module which does report it's not a suitable device. From my point of view there would be a change in the kernel module necessary to make it still report a "SynPS/2 Synaptics TouchPad" even when loaded with proto=imps.

Nevertheless, the mouse does work. Even Tap-to-Click is working with Slackware's default. There's however no chance to get neither Linear- no Circular Scrolling to work that way. If one wants this, there's no other way than loading psmouse with kernel-defaults.

The problem is, that pressure by tap must be not too hight. And i can't find, how can i set the right value for that.

I found it! :D
MaxTapMove is to low. It's 25 now per default (earlier 220).

Tested again with xf86-input-synaptics-0.15.2. Tap-To-Click behavior has been restored and the fix described in this thread is no longer needed.
The issue with proto=imps remains. I opened a bug report on freedesktop.org: http://bugs.freedesktop.org/show_bug.cgi?id=17624

The bug was marked invalid. I've set mail to Daniel (CC'd you, Heinz) to explain the situation.