When an output is transformed (I tested it with drm a. fbdev backends) the touchscreen isn't rotated too. With weston-simple-touch I see the touch is recognized but at different location then where I did touch. See the mailinglist discussion starting here: http://lists.freedesktop.org/archives/wayland-devel/2015-March/020668.html Cheers, Thilo
As far as I know, this is now properly supported by the new touchscreen calibrator included with Weston 5.0.0.
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