evdev: found only multitouch-axes.

[Peter Hutterer]

On Thu, Jun 20, 2013 at 09:27:51AM +0200, lanlaf wrote:
> Hello,
> 
> I've installed Debian 7.0 armhf to an Amlogic 8726-MX based android
> tablet. I use the original kernel from the android partition. I'e
> also installed xorg and xfce4.
> 
> It works fine with an external USB keyboard/mouse, but the
> touchscreen doesn't work with any of the X input drivers I've tried
> (evdev, multiouch, synaptics).
> 
> I've tried with the xserver-xorg-input-evdev 1.7 driver in Debian 7.0,
> it didn't do anything. The experimental package is version 1.7.1, it
> crashes as soon as I touch the screen. I've cloned the git version and
> compiled it, it gives me the error message:
> 
> found only multitouch-axes. That shouldn't happen.
> 
> The tablet has a sitronix st15xx touchscreen, the driver is built-in
> to
> the kernel. It generates MT events outside X if I watch it with
> input-events program.
> 
> I am aware of bug# 64029 which deals with this. So basicly this is a
> +1 message, that I am affected. I am willing to test or provide
> further information if needed.
> 
> The touchscreen is the main built-in input device on a tablet. The
> idea would be to use the touchscreen to move the pointer and
> generate click events, so that I can start and close programs, and
> use an on-screen keyboard to input text.
 
64029 has been fixed and the driver won't crash anymore now. however, a
device that only exposes mt axes and no ABS_X/ABS_Y is agains the kernel
spec iirc and we won't support those. Fix the kernel driver and the evdev
driver will just work.

Cheers,
   Peter