Ok, I was wrong. Looked at Xorg logs, and it shows that the /dev/input/mouse* devices that correspond to the touchscreen are not picked up by any of the existing configurations in xorg.conf.d
On Thu, Oct 10, 2013 at 11:48 PM, Sandeep <sandy.8...@gmail.com> wrote: > I think I figured out what's wrong. > > udev creates two input devices for the touchscreen: > - Touch input > - Mouse input > > I guess this is done to emulate the touchscreen as a mouse so that it can > be used with existing GUI's without requiring applications to handle touch > input. > > Mouse input is configured to be relative by default, touch input is > configured to be absolute by default. > The video shows that the touchscreen input is also translated as mouse > input which is relative, so the mouse pointer moves accordingly. The touch > input itself is invisible, and it looks like no application is using it, > and the only visible change is in the mouse pointer. > > The solution then seems to be that the mouse input created for the > touchscreen should be configured as an absolute device, which will then > make it work correctly. > > -Sandeep > > > On Fri, Oct 4, 2013 at 5:36 PM, Sandeep <sandy.8...@gmail.com> wrote: > >> Hi, >> >> I have an Acer Iconia Tab W500. It has an eGalax touchscreen. Single >> touch input works. >> >> I mainly use KDE, and when I rotate the screen using the Krandrtray >> application, the mouse input works fine, but the touchscreen input does not >> work correctly. >> >> Here is a video showing the problem: >> http://www.youtube.com/watch?v=OviHJmjhoOI >> >> It looks like the touch driver rotates the input in the same way that the >> screen is rotated, thus producing wrong/unexpected behaviour. >> >> I tried searching for existing bugs at bugs.freedesktop.org and it >> doesn't look like any of them cover this problem. Does anyone know what the >> problem might be, and how I can figure out where the problem lies? >> >> Thanks, >> Sandeep >> > >
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