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Multi-Touch Support For X.Org Evdev Driver

X.Org

Published on 02 June 2010 01:43 PM EDT
Written by Michael Larabel in X.Org
1 Comment

While there is multi-touch support in Qt and also Clutter along with MPX capabilities in GTK+ 3.0, the widely-used xf86-input-evdev driver up to this point has not supported multi-touch. Developers, however, have been working on the said support for evdev, which is the generic Linux input driver.

A new set of patches have been published by Benjamin Tissoires that provide preliminary support for multi-touch within the X.Org evdev driver. The patches can be found here, but of course you need a multi-touch device for it to work.

While these patches have been worked on for a while by Tissoires, Carlos Garnacho has today announced another approach to multi-touch handling. In his lengthy mailing list message he describes what he views as the problems with the current EvDev implementation and how it could impair multi-touch adoption on Linux. With his proposal, Carlos also has a branch of the xf86-input-evdev driver that has his changed code along with a small patch that goes against GTK+ to work more according to his ideal way with multi-touch support.

Nothing is yet committed to the mainline code-bases, but we'll be monitoring the situation to see how multi-touch support evolves.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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