Arch Linux

My touchpad stopped working completely under xorg-server 1.11.1-2 and xf86-input-synaptics 1.5.0-1:

==> /var/log/Xorg.0.log <==
[ 379.437] (**) synaptics: ETPS/2 Elantech Touchpad: AccelFactor is now 0.147
[ 379.437] (**) ETPS/2 Elantech Touchpad: (accel) keeping acceleration scheme 1
[ 379.437] (**) ETPS/2 Elantech Touchpad: (accel) acceleration profile 1
[ 379.437] (**) ETPS/2 Elantech Touchpad: (accel) acceleration factor: 2.000
[ 379.437] (**) ETPS/2 Elantech Touchpad: (accel) acceleration threshold: 4
[ 379.437] (--) synaptics: ETPS/2 Elantech Touchpad: touchpad found
[ 379.438] (II) config/udev: Adding input device ETPS/2 Elantech Touchpad (/dev/input/mouse0)
[ 379.438] (II) No input driver/identifier specified (ignoring)
[ 379.438] (II) config/udev: Adding input device PC Speaker (/dev/input/event5)
[ 379.438] (II) No input driver/identifier specified (ignoring)

I don't know why the Xorg log says "No input driver/identifier specified (ignoring)" when my /etc/X11/xorg.conf.d/10-synaptics.conf file states explicitly that the driver is "synaptics":

Section "InputClass"
Identifier "touchpad catchall"
Driver "synaptics"
MatchIsTouchpad "on"
MatchDevicePath "/dev/input/event*"
Option "TapButton1" "1"
Option "TapButton2" "2"
Option "TapButton3" "3"
EndSection

Thanks for your consideration.

I updated my system yesterday to the new xorg server (1.11.1-2).
Everything works except for the two finger scrolling on my synaptics touchpad.
There is some info:

Kernel: 3.0.6-2 (stock)
Synaptics Touchpad driver: 1.5.0-1 (lastest)
Right side scrolling works fine, two or three finger tapping doesn't work either.

As for the "no input driver/identifier specified" warnings in Xorg.0.log: that's by design. On linux you should only assign drivers to /dev/input/event*, not to /dev/input/mouse* devices.

As for multitouch support:
http://cgit.freedesktop.org/xorg/driver/xf86-input-synaptics/commit/?id=4aa16879bd5084f061a55e5b8a0754e1b037212a

The emulation for devices that don't support it correctly has been reverted, as it was giving too much random events. I think you can enable it again by experimenting with the "EmulateTwoFingerMinZ" option, but the value for that depends on how sensitive your touchpad is.

Great! The new config fixes the problem with middle-click for me. I did not use two-finger-scrolling, so I can't say much about that. But one might be able to enable it with: Option "VertTwoFingerScroll" "on"

Using the options named by Michael, two finger scrolling and right clicking works fine again. Thanks!

Vertical scrolling with two fingers works, too. I attached my config. I will also request closure, because this is "fixed".

You don't need to change anything in the evdev config, as the last loaded config is matched for a device. Though this is a regression in the driver, it's based on hardware limitations, so I'll close this as such.