Description of problem: A touch screen device identified as "Quanta OpticalTouchScreen" and found on an ASUS all-in-one pc was reported as not accepting calibration provided via xorg.conf. Xorg log (attached) contained the following error: Quanta OpticalTouchScreen: Couldn't open mtdev device Apparently this error causes all initialisation on the device to be aborted, leaving it uncalibrated. I was able to build a version of evdev without mtdev support which corrects the issue. Either multi touch support for this device should be fixed, or graceful fallback to single touch for unsupported devices added. Version-Release number of selected component (if applicable): xorg-x11-drv-evdev-2.7.0-2.fc17 kernel-3.4.5-2.fc17 mtdev-1.1.0-3.20110105.fc17
Created attachment 599382 [details] Xorg log
Created attachment 599383 [details] Calibration config used.
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