Comment 1 for bug 1095508

Thanks for testing. Trunk is listening XInput slave devices directly now, to hopefully resolve a number of pointer grab related bugs. I've only been able to test Ubuntu 13.04 on a Nexus 7 and x86_64 desktop so far, where it works quite well.

What's the output of
$ xinput
$ ./onboard -dinfo # just starting is enough, no need to press anything

Switching to "GTK" in Preferences->Advanced->Input event source should restore pointer input, though I hoped you wouldn't need that.

I'm still investigating the Gdk-CRITICAL assertions, I've seen them too on the Nexus 7, but not on every start of Onboard. They appear to have little effect though, and aren't responsible for this bug.