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Date: Thu, 8 Mar 2018 19:30:26 +0300
From: Greg <greg@unrelenting.technology>
To: Hans Petter Selasky <hps@selasky.org>
Cc: ticso@cicely.de, freebsd-arm@freebsd.org, freebsd-current@freebsd.org,
 Bernd Walter <ticso@cicely7.cicely.de>
Subject: Re: webcamd based touchscreen problem on Pi3
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On 03/08, Hans Petter Selasky wrote:
>On 03/08/18 17:16, Bernd Walter wrote:
>>Hardware is a Raspberry Pi3 with current r330034.
>>I'm trying to run a USB touchscreen.
>>Tested wmt and uep, but neither wants to attach, although the Waveshare
>>display I'm using is likely running an egalaxy firmware.
>>However webcamd accepts the device and creates a /dev/input/event0.
>>But I can't get X to use it.
>>xf86-input-evdev-2.10.5 is installed and it created an X config file
>>under /usr/local/share/X11/xorg.conf.d/10-evdev.conf.
>>I also tried some google results in /etc/X11/xorg.conf, but X never
>>touches the device:
>
>See here:
>
>https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196678

Or here:

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222609

But that's all about hotplug. It is definitely possible to manually 
configure the device on the stock xorg-server package. I can't say if 
the "google results" are correct without actually seeing them, but it 
should explicitly specify the /dev/input/event0 path.