synaptics touchpad. reconnect not supported

[Nicolò Chieffo]

Originally I don't have any udev rule about the touchpad, and I think
that my touchpad is PS2 so I will try with "synaptics-ps2".
And my xorg.conf has the device line set to /dev/psaux.
I'm now configuring it as you told me, let's hope it will work!
I will let you know soon!
thanks

On Tue, Jul 1, 2008 at 8:43 PM, Paul Vojta <vojta at math.berkeley.edu> wrote:
> On Mon, Jun 30, 2008 at 04:26:25PM +0200, Nicolò Chieffo wrote:
>> I have a laptop that has a problem with the touchpad: if hitting a key
>> combination the synaptics touchpad loses the synchronization and it
>> reconnects.
>> this is the log output in kern.log:
>>
>> psmouse.c: TouchPad at isa0060/serio1/input0 lost sync at byte 1
>> psmouse.c: TouchPad at isa0060/serio1/input0 lost sync at byte 1
>> psmouse.c: TouchPad at isa0060/serio1/input0 lost sync at byte 1
>> psmouse.c: TouchPad at isa0060/serio1/input0 lost sync at byte 1
>> psmouse.c: TouchPadat isa0060/serio1/input0 lost sync at byte 1
>> psmouse.c: issuing reconnect request
>> Synaptics Touchpad, model: 1, fw: 6.3, id: 0x1a0b1, caps: 0xa04713/0x200000
>> input: SynPS/2 Synaptics TouchPad as /class/input/input19
>>
>> The windows driver is smarter, and can handle device disconnections,
>> while the synaptics xorg driver (I have version 0.14.6) once the
>> device is disconnected, it treats it as a normal mouse after the
>> reconnection (no scroll, different acceleration, no finger
>> combinations,...)
>
> The problem is that the touchpad is getting assigned a different number
> after reconnecting.
>
> This can be fixed by the following (suggested by Stefan Monnier):
>
> 1 - use a udev rule so that the touchpad is always available as
>    /dev/input/touchpad:
>
>    kernel=="event*", DRIVERS=="synaptics-usb", SYMLINK+="input/touchpad"
>
> 2 - Force the synaptics driver to use that special device name:
>
>        Option          "Device"        "/dev/input/touchpad"
>
> You might need to adapt the DRIVERS line if your touchpad is not USB.
>
> --Paul Vojta, vojta at math.berkeley.edu
>