Why got XEvent type 84 in _x11_fd_callback?

Stephen M. Webb stephen.webb at bregmasoft.ca
Wed Jan 15 04:12:51 PST 2014

On 01/15/2014 01:22 AM, Leslie Zhai wrote:
> And why ubuntu phone with multitouch touchscreen works well? It is based on Mir, utouch-geis, sort of gesture
> recognition utils, is not it? or it is android-based, different from Linux multitouch protocol?
> https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt

The Ubuntu phone does not use the GEIS API nor does it support X.  It uses the Android/Linux evdev interface exclusively
for input.

As for the Synaptics driver, it is usually configured by default to not act as a proper (XI2-style) multi-touch device
and will do gesture recognition internally and report as additional button events.  You may want to reconfigure X to use
the evdev driver for the device instead.

Stephen M. Webb  <stephen.webb at bregmasoft.ca>

More information about the xorg-devel mailing list